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Kaur P, Singh K. Analyte Detection: A Decade of Progress in the Development of Optical/Fluorescent Sensing Probes. CHEM REC 2023; 23:e202200184. [PMID: 36180394 DOI: 10.1002/tcr.202200184] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/12/2022] [Indexed: 01/24/2023]
Abstract
The development of selective and sensitive chemical sensors capable of detecting metal ions, anions, neutral species, explosives and hazardous substances, selectively and sensitively has attracted considerable interest of various research groups. The presence of such analytes within the permissible limits is often beneficial, but the excess amounts may lead to lethal effects to both the environment as well as the living organisms. Owing to the toxicity of the heavy metal ions, toxic anions and nitro-aromatics which are main constituents of explosives, the timely detection of these materials is most desirable to ensure safety and security of the mankind. In this personal account, we present several classes of molecular sensors that were specifically designed in our lab during the past decade for detecting several species in solutions, solid state as well as biological media. Modulation of the optical properties in response to the presence of guest species, led to selective and sensitive detection protocols, and was supported by the theoretical studies wherever possible. We have also extended the application of some of these probes for the on-site detection of analytes by developing the paper strips, glass slides and even the wool and cotton fabrics loaded with probes. One such development represents detection of palladium in human urine and blood samples collected from clinical samples. Additionally, the sensing events in some cases have successfully been reproduced in the live cancer cells. Based on the ease and cost-effective synthesis of the molecular probes, we hope that this account shall provide significant information to researchers in understanding the structure dependent sensing capabilities of the molecular probes.
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Affiliation(s)
- Paramjit Kaur
- Department of Chemistry, Centre of Advanced Study, Guru Nanak Dev University, Amritsar-, 143 005, India
| | - Kamaljit Singh
- Department of Chemistry, Centre of Advanced Study, Guru Nanak Dev University, Amritsar-, 143 005, India
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Ferrier MG, Valdez CA, Singh SK, Hok S, Ray D, Gagliardi L, Despotopulos JD. Unsaturated Sulfur Crown Ethers Can Extract Mercury(II) and Show Promise for Future Copernicium(II) Studies: A Combined Experimental and Computational Study. Inorg Chem 2021; 61:807-817. [PMID: 34965111 DOI: 10.1021/acs.inorgchem.1c01869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The unsaturated hexathia-18-crown-6 (UHT18C6) molecule was investigated for the extraction of Hg(II) in HCl and HNO3 media. This extractant can be directly compared to the recently studied saturated hexathia-18-crown-6 (HT18C6). The default conformation of the S lone pairs in UHT18C6 is endodentate, where the pocket of the charge density, according to the crystal structures, is oriented toward the center of the ring, which should allow better extraction for Hg(II) compared to the exodentate HT18C6. Batch study experiments showed that Hg(II) had better extraction at low acid molarity (ca. 99% in HCl and ca. 95% in HNO3), while almost no extraction was observed above 0.4 M HCl and 4 M HNO3 (<5%). Speciation studies were conducted with the goal of delineating a plausible extraction mechanism. Density functional theory calculations including relativistic effects were carried out on both Hg(II)-encapsulated HT18C6 and UHT18C6 complexes to shed light on the binding strength and the nature of bonding. Our calculations offer insights into the extraction mechanism. In addition to Hg(II), calculations were performed on the hypothetical divalent Cn(II) ion, and showed that HT18C6 and UHT18C6 could extract Cn(II). Finally, the extraction kinetics were explored to assess whether this crown can extract the short-lived Cn(II) species in a future online experiment.
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Affiliation(s)
- Maryline G Ferrier
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States
| | - Carlos A Valdez
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States.,Forensic Science Center, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States
| | - Saurabh Kumar Singh
- Department of Chemistry, Indian Institute of Technology (IIT) Hyderabad, Kandi, Sangareddy 502285, Telangana, India
| | - Saphon Hok
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States.,Forensic Science Center, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States
| | - Debmalya Ray
- Department of Chemistry, Chemical Theory Center and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Laura Gagliardi
- Department of Chemistry, Pritzker School of Molecular Engineering, James Franck Institute, Chicago Center for Theoretical Chemistry, The University of Chicago, 5735 S Ellis Avenue, Chicago, Illinois 60637, United States.,Argonne National Laboratory, 97000 South Cass Avenue, Lemont, Illinois 60439, United States
| | - John D Despotopulos
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory (LLNL), 7000 East Avenue, Livermore, California 94550, United States
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Ferrier MG, Kmak KN, Kerlin WM, Valdez CA, Despotopulos JD. Transactinide studies with sulfur macrocyclic extractant using mercury. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07320-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Novel polymer crafted sugar thiacrown ether and its applications in recovery of metal ions. Carbohydr Res 2020; 495:108057. [DOI: 10.1016/j.carres.2020.108057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/22/2020] [Accepted: 06/01/2020] [Indexed: 11/22/2022]
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5
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Dunn RO, Bantchev GB, Doll KM, Ascherl KL, Lansing JC, Murray RE. Thioether-Functionalized Corn Oil Biosorbents for the Removal of Mercury and Silver Ions from Aqueous Solutions. J AM OIL CHEM SOC 2018. [DOI: 10.1002/aocs.12089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Robert O. Dunn
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
| | - Grigor B. Bantchev
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
| | - Kenneth M. Doll
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
| | - Kim L. Ascherl
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
| | - James C. Lansing
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
| | - Rex E. Murray
- Bio-Oils Research; United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research; 1815 N. University St., Peoria IL 61604 USA
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Odhiambo RA, Aluoch AO, Njenga LW, Kagwanja SM, Wandiga SO, Wendt OF. Synthesis, characterisation and ion-binding properties of oxathiacrown ethers appended to [Ru(bpy)2]2+. Selectivity towards Hg2+, Cd2+and Pb2+. RSC Adv 2018; 8:3663-3672. [PMID: 35542933 PMCID: PMC9077686 DOI: 10.1039/c7ra13589k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 01/12/2018] [Indexed: 12/19/2022] Open
Abstract
Oxathiacrown ether modified ruthenium complex2facilitates a selective naked-eye detection of Hg2+with an instrumental detection limit of 68 ppm.
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A rare 3D chloro-laced Mn(II) metal-organic framework to show sensitive probing effect to Hg 2+. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Iwatsuki S, Ichiyama A, Tanooka S, Toyama M, Katagiri K, Kawahata M, Yamaguchi K, Danjo H, Chayama K. Coordination structure and extraction behavior of a silver ion with N-substituted-9-aza-3,6,12,15-tetrathiaheptadecanes: significant effect of Ph-C-N framework on the extractability. Dalton Trans 2016; 45:12548-58. [PMID: 27435308 DOI: 10.1039/c6dt01535b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Substituted-9-aza-3,6,12,15-tetrathiaheptadecanes having Ph-C-N frameworks (N-R-ATH; R = benzyl (N-Bn-ATH), 4-nitrobenzyl (N-NO2Bn-ATH), and diphenylmethyl (N-Ph2CH-ATH)) were synthesized, and their Ag(i) complexes were structurally characterized. X-Ray crystal structure analyses of [Ag(N-R-ATH)](BF4) (R = Bn and Ph2CH) revealed monomeric tetra-S-coordinated complex cation structures without the N-coordination, and a benzene ring of the N-R group covered over the amine nitrogen atom. The precise extraction analyses of a Ag(i) ion with ATH derivatives (L = N-R-ATHs and N-H-ATH) associated with the (1)H NMR analyses of the [Ag(L)](+) complexes in polar and non-polar solvents revealed that the introduction of the N-substituent significantly enhanced the extractability of Ag(+), due to the "hydrophobic cover" effect by the Ph-C-N framework in the [Ag(N-R-ATH)](+) complexes.
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Affiliation(s)
- Satoshi Iwatsuki
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Atsushi Ichiyama
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Syogo Tanooka
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Mari Toyama
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Kosuke Katagiri
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Masatoshi Kawahata
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Kentaro Yamaguchi
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan
| | - Hiroshi Danjo
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
| | - Kenji Chayama
- Department of Chemistry, Konan University, 8-9-1 Okamoto, Higashinada, Kobe 658-8501, Japan.
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Yee KK, Reimer N, Liu J, Cheng SY, Yiu SM, Weber J, Stock N, Xu Z. Effective Mercury Sorption by Thiol-Laced Metal–Organic Frameworks: in Strong Acid and the Vapor Phase. J Am Chem Soc 2013; 135:7795-8. [DOI: 10.1021/ja400212k] [Citation(s) in RCA: 409] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ka-Kit Yee
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Nele Reimer
- Institut
für Anorganische
Chemie, Christian-Albrechts Universität, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Jie Liu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Sum-Yin Cheng
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Shek-Man Yiu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon,
Hong Kong, China
| | - Jens Weber
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Research
Campus Golm, 14476 Golm, Germany
| | - Norbert Stock
- Institut
für Anorganische
Chemie, Christian-Albrechts Universität, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Zhengtao Xu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon,
Hong Kong, China
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Tsybizova A, Tarábek J, Buchta M, Holý P, Schröder D. Electrospray ionization mass spectrometric investigations of the complexation behavior of macrocyclic thiacrown ethers with bivalent transitional metals (Cu, Co, Ni and Zn). RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2287-2294. [PMID: 22956320 DOI: 10.1002/rcm.6352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE Heavy metals are both a problem for the environment and an important resource for industry. Their selective extraction by means of organic ligands therefore is an attractive topic. The coordination of three thiacrown ethers to late 3d-metal ions was investigated by a combination of electrospray ionization mass spectrometry (ESI-MS) and electron paramagnetic resonance (EPR). METHODS The mass spectrometric experiments were carried out in an ion trap mass spectrometer with an ESI source. Absolute binding constants were estimated by comparison with data for 18-crown-6/Na(+). EPR spectroscopy was used as a complementary method for investigating the Cu(I) /Cu(II) redox couple. RESULTS The study found that thiacrown ethers preferentially bind traces of copper even at an excess of other metal ions (Co(II), Ni(II), and Zn(II)). The absolute association constants of the Cu(I) complexes were about 10(8) M(-1), and about two orders of magnitude lower for the other 3d-metal cations. The EPR spectra demonstrated that the reduction from Cu(II) to Cu(I) upon formation of the [(thiacrown)Cu](+) species takes place in solution. CONCLUSIONS ESI-MS demonstrated that the three thiacrown ligands examined had high binding constants as well as good selectivities for copper(I) at low concentrations, and in the presence of other metal ions. By a combination of ESI-MS and EPR spectrometry it was shown that the reduction from Cu(II) to Cu(I) occurred in solution.
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Affiliation(s)
- Alexandra Tsybizova
- Institute of Organic Chemistry and Biochemistry, Flemingovo náměstí 2, 166 10 Prague 6, Czech Republic
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11
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Shaikh MN, Al-maythalony BA, Monim-ul-mehboob M, Fettouhi M, Wazeer MIM, Isab AA, Ahmad S. Mercury(II) cyanide complexes with alkyldiamines: solid-state/solution NMR, computational, and antimicrobial studies. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.683176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- M. Nasiruzzaman Shaikh
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - Bassem A. Al-maythalony
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - M. Monim-ul-mehboob
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - Mohammed Fettouhi
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - Mohammed I. M. Wazeer
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - Anvarhusein A. Isab
- a Department of Chemistry , King Fahd University of Petroleum and Minerals , Dhahran 31261 , Saudi Arabia
| | - Saeed Ahmad
- b Department of Chemistry , University of Engineering and Technology , Lahore 54890 , Pakistan
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12
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Lima FCA, Viana RB, da Silva TT, Wardell SMSV, do Filho APN, Carneiro JWM, Comar M, da Silva ABF. First- and second-row transition metal oxa-aza macrocyclic complexes: a DFT study of an octahedral conformation. J Mol Model 2012; 18:3243-53. [DOI: 10.1007/s00894-011-1323-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 11/25/2011] [Indexed: 10/14/2022]
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13
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Heterotrinuclear manganese(II) and vanadium(IV) Schiff base complexes as epoxidation catalysts. TRANSIT METAL CHEM 2011. [DOI: 10.1007/s11243-011-9486-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Siriwardana AI, Torriero AAJ, Reyna-González JM, Burgar IM, Dunlop NF, Bond AM, Deacon GB, MacFarlane DR. Nitrile Functionalized Methimazole-Based Ionic Liquids. J Org Chem 2010; 75:8376-82. [DOI: 10.1021/jo101449q] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amal I. Siriwardana
- School of Chemistry, Monash University, Clayton, 3800, VIC, Australia
- ARC Special Research Centre for Green Chemistry, Monash University, Clayton, 3800, VIC, Australia
| | - Angel A. J. Torriero
- School of Chemistry, Monash University, Clayton, 3800, VIC, Australia
- ARC Special Research Centre for Green Chemistry, Monash University, Clayton, 3800, VIC, Australia
| | | | | | - Noel F. Dunlop
- Orica Ltd, 1 Nicholson St., Melbourne, VIC 3000, Australia
| | - Alan M. Bond
- School of Chemistry, Monash University, Clayton, 3800, VIC, Australia
- ARC Special Research Centre for Green Chemistry, Monash University, Clayton, 3800, VIC, Australia
| | - Glen B. Deacon
- School of Chemistry, Monash University, Clayton, 3800, VIC, Australia
| | - Douglas R. MacFarlane
- School of Chemistry, Monash University, Clayton, 3800, VIC, Australia
- ARC Special Research Centre for Green Chemistry, Monash University, Clayton, 3800, VIC, Australia
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Mameli M, Lippolis V, Caltagirone C, Capelo JL, Faza ON, Lodeiro C. Hg2+ Detection by New Anthracene Pendant-Arm Derivatives of Mixed N/S- and N/S/O-Donor Macrocycles: Fluorescence, Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and Density Functional Theory Studies. Inorg Chem 2010; 49:8276-86. [DOI: 10.1021/ic1007439] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Marta Mameli
- Dipartimento di Chimica Inorganica ed Analitica, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Italy
| | - Vito Lippolis
- Dipartimento di Chimica Inorganica ed Analitica, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Italy
| | - Claudia Caltagirone
- Dipartimento di Chimica Inorganica ed Analitica, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Italy
| | - José Luis Capelo
- Grupo BIOSCOPE, Departamento de Química-Física, Facultad de Ciencias de Ourense, Universidad de Vigo, E-32004 Ourense, Spain
- REQUIMTE-CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Monte de Caparica 2829-516, Portugal
| | - Olalla Nieto Faza
- Departamento de Química Orgánica, Facultade de Ciencias de Ourense, Universidade de Vigo, E-32004 Ourense, Spain
| | - Carlos Lodeiro
- Grupo BIOSCOPE, Departamento de Química-Física, Facultad de Ciencias de Ourense, Universidad de Vigo, E-32004 Ourense, Spain
- REQUIMTE-CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, Monte de Caparica 2829-516, Portugal
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Torriero AAJ, Siriwardana AI, Bond AM, Burgar IM, Dunlop NF, Deacon GB, MacFarlane DR. Physical and Electrochemical Properties of Thioether-Functionalized Ionic Liquids. J Phys Chem B 2009; 113:11222-31. [DOI: 10.1021/jp9046769] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Angel A. J. Torriero
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Amal I. Siriwardana
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Alan M. Bond
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Iko M. Burgar
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Noel F. Dunlop
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Glen B. Deacon
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
| | - Douglas R. MacFarlane
- School of Chemistry and ARC Special Research Centre for Green Chemistry, Monash University, Clayton, Victoria 3800, Australia, CMSE Division, CSIRO, Clayton, Victoria 3800, Australia, and Orica Ltd., 1 Nicholson Street, Melbourne, Victoria 3000, Australia
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Vujasinović I, Veljković J, Molcanov K, Kojić-Prodić B, Mlinarić-Majerski K. Thiamacrocyclic lactones: new Ag(I)-ionophores. J Org Chem 2008; 73:9221-7. [PMID: 18956844 DOI: 10.1021/jo801143s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The syntheses of novel adamantane thialactones 5-12 are reported, and the results of the heavy- and transition-metal cation extraction experiments are described. The results are compared with those obtained with similar thiamacrocyclic ligands that have flexible chains of methylene groups incorporated into the macrocyclic framework as in 13-20. The results show that most of the hosts studied are very good in complexing the Ag(+) ion. The formation of complexes has also been demonstrated using NMR titration experiments for macrocycles 13 and 14 with AgTFA. Introduction of a single polycyclic molecule into the 15- to 18-membered rings increases the rigidity and preorganizes the ligand for complexation. However, two adamantane molecules embedded in the ring usually diminish the complexing ability of the ligand, primarily due to sterical effects of the bulky adamantane moiety that obstructs formation of an optimal geometry for binding the desired metal ion. The structures of macrocycles 5, 7, 9, 11, and 19 were determined by X-ray structure analysis, and their conformational properties are discussed. In the solid state, 7, 11, and 19 are organized into tubular fashion using C-H...O interactions. Also, two silver complexes with thialactone 13, Ag13 and Ag(13)(2), were prepared and characterized. The structure analysis of Ag13 and Ag(13)(2) reveals the formation of mononuclear and binuclear species with silver in ambivalent, tetrahedral coordination via sulfur and oxygen from trifluoroacetate anion.
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Affiliation(s)
- Ines Vujasinović
- Department of Organic Chemistry and Biochemistry, Ruder Bosković Institute, P.O. Box 180, 10002 Zagreb, Croatia
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Grant GJ, Botros ME, Hassler JS, Janzen DE, Grapperhaus CA, O’Toole MG, VanDerveer DG. Hg(II) and Cd(II) complexes with mixed donor macrocyclic thioethers: The oxophobicity of mercury(II). Polyhedron 2008. [DOI: 10.1016/j.poly.2008.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kucukdumlu A, Karaböcek N, Karaböcek S. Synthesis and structural studies of (2E,3E,6R,9E,11E)-6-isopropenyl-3,6,10-trimethyl-5,8-dioxa-4,9-diazadodeca-3,9-diene-2,11-dione dioxime, ligand and its Mono-, homo, and heterodinuclear copper(II)/nickel(II) complexes. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-007-0286-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Liu L, Wong WY, Lam YW, Tam WY. Exploring a series of monoethynylfluorenes as alkynylating reagents for mercuric ion: Synthesis, spectroscopy, photophysics and potential use in mercury speciation. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2006.07.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Duta M, Asfari Z, Kruchinina N, Thuéry P, Hagège A, Leroy M. Thiacrowncalix[4]arene Derivatives: Synthesis and Complexing Properties. Supramol Chem 2006. [DOI: 10.1080/10610270412331331660] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mariana Duta
- a Laboratoire de Chimie Analytique et Minérale , UMR 7512 CNRS/ULP, Ecole Européenne de Chimie, Polymères et Matériaux , 25 rue Becquerel, 67087, Strasbourg Cedex, France
| | - Zouhair Asfari
- a Laboratoire de Chimie Analytique et Minérale , UMR 7512 CNRS/ULP, Ecole Européenne de Chimie, Polymères et Matériaux , 25 rue Becquerel, 67087, Strasbourg Cedex, France
| | - Natalia Kruchinina
- b Ecological Engineering Faculty , D.I. Mendeleev University of Chemical Technology , Moscow, 125047, Russia
| | - Pierre Thuéry
- c CEA/Saclay, DSM/DRECAM/SCM (CNRS URA 331) , Bât. 125, 91191, Gif-sur-Yvette, France
| | - Agnès Hagège
- a Laboratoire de Chimie Analytique et Minérale , UMR 7512 CNRS/ULP, Ecole Européenne de Chimie, Polymères et Matériaux , 25 rue Becquerel, 67087, Strasbourg Cedex, France
| | - Maurice Leroy
- a Laboratoire de Chimie Analytique et Minérale , UMR 7512 CNRS/ULP, Ecole Européenne de Chimie, Polymères et Matériaux , 25 rue Becquerel, 67087, Strasbourg Cedex, France
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22
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Liu L, Lam YW, Wong WY. Complexation of 4,4′-di(tert-butyl)-5-ethynyl-2,2′-bithiazole with mercury(II) ion: Synthesis, structures and analytical applications. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.11.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Karaböcek N. Synthesis and Structural Studies of Tetraaldehyde Phenylhydrazone and its Complex with Copper(II). TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-005-6337-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Kruszynski R, Siwy M, Porwolik-Czomperlik I, Trzesowska A. A new regioselective method of macrobicyclic Schiff bases synthesis. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Helm ML, Hill LL, Lee JP, Van Derveer DG, Grant GJ. Cadmium-113 NMR studies on homoleptic complexes containing thioether ligands: the crystal structures of [Cd([12]aneS4)2](ClO4)2, [Cd([18]aneS4N2)](PF6)2 and [Cd([9]aneS3)2](PF6)2. Dalton Trans 2006:3534-43. [PMID: 16855755 DOI: 10.1039/b601665k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the measurement of 113Cd NMR chemical shift data for homoleptic thioether and related aza and mixed aza/thiacrown complexes. In a series of Cd(II) complexes containing trithioether to hexathioether ligands, we observe solution 113Cd NMR chemical shifts in the range of 225 to 731 ppm. Upfield chemical shifts in these NMR spectra are seen whenever: (a) the number of thioether sulfur donors in the complex is decreased, (b) a thioether sulfur donor is replaced by a secondary nitrogen donor, or (c) the size of the macrocycle ring increases without a change in the nature or number of the donor atoms. Changes in the identity of non-coordinating anions such as perchlorate or hexafluorophosphate have little effect upon the 113Cd NMR chemical shift in solution. We report the X-ray structure of the complex [Cd([12]aneS4)2](ClO4)2 ([12]aneS4 = 1,4,7,10-tetrathiacyclododecane) (1) which shows the first example of octakis(thioether) coordination of a metal ion, forming an unusual eight-coordinate square antiprismatic structure. We report the X-ray structure of the complex [Cd([9]aneS3)2](PF6)2 ([9]aneS3 = 1,4,7-trithiacyclononane) (3a) which shows hexakis(thioether) coordination to form a distorted octahedral structure. We have also prepared and characterized the Cd(II) complex of a mixed azathiacrown, [Cd([18]aneS4N2)](PF6)2 ([18]aneS4N2 = 1,4,10,13-tetrathia-7,16-diazacyclooctadecane) (6). Its X-ray structure shows a distorted octahedral S4N2 environment around the Cd(II) with the ligand coordinated in the rac fashion. We observe a solvent- and temperature-dependent 14N-1H coupling in the 1H NMR spectrum of the complex which is not present in analogous complexes with this ligand.
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Affiliation(s)
- Monte L Helm
- Department of Chemistry, University of Tennessee at Chattanooga, Chattanooga, TN 37403, USA
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THOMAS HERVÉ, MIELOSZYNSKI JEANLUC, OGET NICOLAS. A Fast and Efficient Route to 5-Chloromethyl-1,4,7,10-Tetrathiacyclotridecane and its Behavior in a Chloroform Solution. J INCL PHENOM MACRO 2005. [DOI: 10.1007/s10847-005-9008-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Ito K, Ta AT, Bishop DB, Nelson AJ, Reynolds JG, Andrews JC. Mercury L3 and sulfur K-edge studies of Hg-bound thiacrowns and back-extracting agents used in mercury remediation. Microchem J 2005. [DOI: 10.1016/j.microc.2005.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Helm ML, Helton GP, Vanderveer DG, Grant GJ. Mercury-199 NMR Studies of Thiacrown and Related Macrocyclic Complexes: The Crystal Structures of [Hg(18S6)](PF6)2 and [Hg(9N3)2](ClO4)2. Inorg Chem 2005; 44:5696-705. [PMID: 16060620 DOI: 10.1021/ic050500z] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We wish to report the first measurements of (199)Hg NMR chemical shift data for a series of homoleptic Hg(II) complexes with thiacrown ligands and related aza and mixed thia/aza macrocycles. In mercury(II) complexes containing trithiacrown through hexathiacrown ligands, we observed (199)Hg NMR chemical shifts in the range of -298 to -1400 ppm. Upfield chemical shifts in these NMR spectra are seen whenever (a) the number of thioether sulfur donors in the complex is decreased, (b) a thioether sulfur donor is replaced by a secondary nitrogen donor, and (c) the size of the macrocycle ring increases without a change in the nature or number of the donor atoms. Changes in noncoordinating anions, such as hexafluorophosphate and perchlorate, have little effect on the (199)Hg chemical shift. For several complexes, we observed (3)J((199)Hg-(1)H) coupling in the range of 50-100 Hz, the first example of proton-mercury coupling through a C-S thioether bond. Also, we obtained unusual upfield (13)C NMR chemical shifts for methylene resonances in several of the thiacrown complexes which correspond to distortions within the five- and six-membered chelate rings bound to the mercury ion. We report the X-ray crystal structure of the complex [Hg(18S6)](PF(6))(2) (18S6 = 1,4,7,10,13,16-hexathiacyclooctadecane). The molecule crystallizes in the rare trigonal space group Pm1 with hexakis(thioether) coordination around the Hg(II) center confirming previous X-ray photoemission spectroscopic data on the compound. The lack of an observable (199)Hg NMR signal for the complex is the result of the identical length (2.689(2) Angstroms) of all six Hg-S bonds. We additionally report the X-ray structure of the complex [Hg(9N3)(2)](ClO(4))(2) (9N3 = 1,4,7-triazacyclononane) which shows hexakis(amine) coordination of the 9N3 to form a distorted trigonal prismatic structure. Solution dissociation of the one of the 9N3 ligands from the mercury ion is confirmed by multinuclear NMR experiments. For six-coordinate macrocyclic Hg(II) complexes, N6 donor sets have a preference for trigonal prisms while S6 donor sets favor octahedral structures.
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Affiliation(s)
- Monte L Helm
- Department of Chemistry, The University of Tennessee, Chattanooga, 37403, USA
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Karaböcek S, Degirmencioglu I, Karaböcek N, Er M, Serbest K. The effect of intramolecular-hydrogen bonds in the synthesis of novel imidates from a 13-membered dioxadithia crown ether diester. J Heterocycl Chem 2003. [DOI: 10.1002/jhet.5570400412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Helm ML, Combs CM, VanDerveer DG, Grant GJ. Homoleptic Group 12 metal complexes of macrocyclic thioethers: the crystal structures of bis(1,4,7-trithiacyclodecane)M(II) perchlorate: M(II)=zinc(II), cadmium(II), mercury(II). Inorganica Chim Acta 2002. [DOI: 10.1016/s0020-1693(02)01016-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Wong WY, Choi KH, Lu GL, Lin Z. Bis(alkynyl) Mercury(II) Complexes of Oligothiophenes and Bithiazoles. Organometallics 2002. [DOI: 10.1021/om020517e] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wai-Yeung Wong
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Ka-Ho Choi
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Guo-Liang Lu
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Hong Kong, People's Republic of China
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Visser AE, Swatloski RP, Reichert WM, Mayton R, Sheff S, Wierzbicki A, Davis JH, Rogers RD. Task-specific ionic liquids incorporating novel cations for the coordination and extraction of Hg2+ and Cd2+: synthesis, characterization, and extraction studies. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2002; 36:2523-2529. [PMID: 12075816 DOI: 10.1021/es0158004] [Citation(s) in RCA: 310] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A series of hydrophobic task-specific ionic liquids designed to extract Hg2+ and Cd2+ from water were prepared by appending urea-, thiourea-, and thioether-substituted alkyl groups to imidazoles and combining the resulting cationic species with PF6-. The new ionic liquids were characterized and investigated for their metal ion extraction capabilities. When used in liquid/liquid extraction of Hg2+ and Cd2+ from aqueous solutions, the metal ion distribution ratios increased several orders of magnitude, regardless of whether the ionic liquids were used as the sole extracting phase or doped into a series of [1-alkyl-3-methylimidazolium][PF6] (alkyl = n-C4-C8) ionic liquids to form a 1:1 solution. In the 1:1 mixtures, as the length of the alkyl chain increased from butyl to hexyl to octyl, the metal ion distribution ratios increased. Increasing the ratio TSIL/[C4mim][PF6] resulted in higher distribution ratios for both Hg2+ and Cd2+. Overall, the thiourea- and urea-derivatized cations yielded the highest distribution ratios, and those for Hg2+ were higher than those for Cd2+; however, a change in aqueous-phase pH does not promote the stripping of metal ions from the extracting phase. The combination of these imidazolium cations and PF6- produced ionic liquids with decreased thermal stability in comparison to [C(n)mim]-[PF6]. Gaussian98 restricted Hartree-Fock geometry optimizations for one of the thiourea-appended cations shows the charge delocalization around the ring and suggests that the thiourea group may aid in deprotonating the imidazolium ring and may be responsible for the lowered thermal stability of these cations.
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Affiliation(s)
- Ann E Visser
- Center for Green Manufacturing and Department of Chemistry, The University of Alabama, Tuscaloosa 35487, USA
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Bishop DB, McCool GD, Nelson AJ, Reynolds JG, Baumann TF, Fox GA, DeWitt JG, Andrews JC. X-Ray absorption spectroscopy of thiacrown compounds used in the remediation of mercury contaminated water. Microchem J 2002. [DOI: 10.1016/s0026-265x(02)00016-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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van de Water L, Driessen W, Glenny M, Reedijk J, Schröder M. Selective and reversible extraction of heavy metal-ions by mixed-donor crown ether-modified oxirane and thiirane resins. REACT FUNCT POLYM 2002. [DOI: 10.1016/s1381-5148(02)00031-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Wong WY, Choi KH, Lu GL, Shi JX, Lai PY, Chan SM, Lin Z. Binuclear Gold(I) and Mercury(II) Derivatives of Diethynylfluorenes. Organometallics 2001. [DOI: 10.1021/om0106229] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wai-Yeung Wong
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Ka-Ho Choi
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Guo-Liang Lu
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Jian-Xin Shi
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Pui-Yan Lai
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Sze-Man Chan
- Department of Chemistry, Hong Kong Baptist University, Waterloo Road, Kowloon Tong, Hong Kong, People's Republic of China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Hong Kong, People's Republic of China
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Reddy MLP, Francis T. RECENT ADVANCES IN THE SOLVENT EXTRACTION OF MERCURY(II) WITH CALIXARENES AND CROWN ETHERS. SOLVENT EXTRACTION AND ION EXCHANGE 2001. [DOI: 10.1081/sei-100107026] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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38
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Tanaka M, Nakamura M, Ikeda T, Ikeda K, Ando H, Shibutani Y, Yajima S, Kimura K. Synthesis and metal-ion binding properties of monoazathiacrown ethers. J Org Chem 2001; 66:7008-12. [PMID: 11597221 DOI: 10.1021/jo015709i] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic procedures for monoazathiacrown ethers were explored, and monoazatrithia-12-crown-4, monoazatetrathia-15-crown-5, and monoazapentathia-18-crown-6 were obtained in moderate yields by the reaction of bis(2-chloroethyl)amine with the appropriate dithiols in the presence of lithium hydroxide in THF. To evaluate metal-ion binding properties of the monoazathiacrown ethers by solvent extraction, lipophilic dodecyl and dodecanoyl groups were incorporated onto the monoazathiacrown ethers. The solvent extraction experiments suggested that monoazathiacrown ethers have Ag(+) and Hg(2+) selectivities and that the relative selectivity between Ag(+) and Hg(2+) depends on their nitrogen atom properties and numbers of sulfur atoms reflecting the respective affinities of nitrogen and sulfur atoms to Hg(2+) and Ag(+). An interesting ability to bind Mg(2+) was observed in the case of N-dodecyl monoazatrithia-12-crown-4.
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Affiliation(s)
- M Tanaka
- Special Division for Human Life Technology, National Institute of Advanced Industrial Science and Technology, 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan.
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Lo H, Chen H, Fish R. Synthesis of a [{Mono-N-(4-vinylbenzyl)-1,4,7-triazacyclononane}2Hg](OTf)2 Sandwich Complex, Polymerization of this Monomer with Divinylbenzene, and Hg2+ Ion Selectivity Studies with the Demetallated Resin. Eur J Inorg Chem 2001. [DOI: 10.1002/1099-0682(200109)2001:9<2217::aid-ejic2217>3.0.co;2-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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40
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Cox MT, Gahan LR. SEPARATION OF MERCURY (II), LEAD (II), AND SILVER (I) FROM AQUEOUS SOLUTION USING AN AMINOPOLYCARBOXYLATE SILICA. SEP SCI TECHNOL 2001. [DOI: 10.1081/ss-100106103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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A. Kuksa V, M.S.V. Wardell S, Kong Thoo Lin P. Synthesis and X-ray structures of Ni and Zn complexes of a novel oxa-azamacrocyclic system. INORG CHEM COMMUN 2000. [DOI: 10.1016/s1387-7003(00)00067-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Polymer pendant crown thioethers: synthesis, characterization and Hg2+ extraction studies of polymer-supported thiacrowns ([14]aneS4 and [17]aneS5). REACT FUNCT POLYM 2000. [DOI: 10.1016/s1381-5148(99)00085-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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