1
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Subtraction by addition: chalcogen-oxidation induced N–C bond scissions in bis(amido)cyclodiphosphazane chelates of the Group 15 elements. Polyhedron 2023. [DOI: 10.1016/j.poly.2023.116361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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2
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Virieux D, Delogu F, Porcheddu A, García F, Colacino E. Mechanochemical Rearrangements. J Org Chem 2021; 86:13885-13894. [PMID: 34259516 DOI: 10.1021/acs.joc.1c01323] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Molecular rearrangements are a powerful tool for constructing complex structures in an atom- and step-economic manner, translating multistep transformations into an intrinsically more sustainable process. Mechanochemical molecular rearrangements become an even more appealing eco-friendly synthetic approach, especially for preparing active pharmaceutical ingredients (APIs) and natural products. Still in their infancy, rearrangements promoted by mechanochemistry represent a promising approach for chemists to merge molecular diversity and green chemistry perspectives toward more selective and efficient syntheses with a reduced environmental footprint.
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Affiliation(s)
- David Virieux
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier 34296, France
| | - Francesco Delogu
- Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Universita degli Studi di Cagliari, Via Marengo 2, 09123 Cagliari, Italy
| | - Andrea Porcheddu
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, 09042 Monserrato, 09028 Cagliari, Italy
| | - Felipe García
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, 21 Nanyang Link, 63737 Singapore
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3
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Shi X, León F, Sim Y, Quek S, Hum G, Khoo YXJ, Ng ZX, Par MY, Ong HC, Singh VK, Ganguly R, Clegg JK, Díaz J, García F. N‐Bridged Acyclic Trimeric Poly‐Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaoyan Shi
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 Guangdong P. R. China
| | - Felix León
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Ying Sim
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Shina Quek
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Gavin Hum
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Yi Xin Joycelyn Khoo
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Zi Xuan Ng
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Mian Yang Par
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - How Chee Ong
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Varun K. Singh
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
- Department of Chemistry Shiv Nadar University NH91, Tehsil Dadri Gautam Buddha Nagard 201314 Uttar Pradesh India
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences The University of Queensland Cooper Road St Lucia 4072 Queensland Australia
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica Facultad de Veterinaria Universidad de Extremadura Avda de la Universidad s/n 10003 Cáceres Spain
| | - Felipe García
- School of Physical and Mathematical Science Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore
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4
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Shi X, León F, Sim Y, Quek S, Hum G, Khoo YXJ, Ng ZX, Par MY, Ong HC, Singh VK, Ganguly R, Clegg JK, Díaz J, García F. N-Bridged Acyclic Trimeric Poly-Cyclodiphosphazanes: Highly Tuneable Cyclodiphosphazane Building Blocks. Angew Chem Int Ed Engl 2020; 59:22100-22108. [PMID: 32696527 DOI: 10.1002/anie.202008214] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/16/2020] [Indexed: 01/15/2023]
Abstract
We have synthesized a completely new family of acyclic trimeric cyclodiphosphazane compounds comprising NH, Ni Pr, Nt Bu and NPh bridging groups. In addition, the first NH-bridged acyclic dimeric cyclophosphazane has been produced. The trimeric species display highly tuneable characteristics so that the distance between the terminal N(H)R moieties can be readily modulated by the steric bulk present in the bridging groups (ranging from ≈6 to ≈10 Å). Moreover, these species exhibit pronounced topological changes when a weak non-bonding NH⋅⋅⋅π aryl interaction is introduced. Finally, the NH-bridged chloride binding affinities have been calculated and benchmarked along with the existing experimental data available for monomeric cyclodiphosphazanes. Our results underscore these species as promising hydrogen bond donors for supramolecular host-guest applications.
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Affiliation(s)
- Xiaoyan Shi
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore.,School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, Guangdong, P. R. China
| | - Felix León
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Ying Sim
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Shina Quek
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Gavin Hum
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Yi Xin Joycelyn Khoo
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Zi Xuan Ng
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Mian Yang Par
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - How Chee Ong
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Varun K Singh
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
| | - Rakesh Ganguly
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore.,Department of Chemistry, Shiv Nadar University, NH91, Tehsil Dadri, Gautam Buddha Nagard, 201314, Uttar Pradesh, India
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Cooper Road, St Lucia, 4072, Queensland, Australia
| | - Jesús Díaz
- Departamento de Química Orgánica e Inorgánica, Facultad de Veterinaria Universidad de Extremadura, Avda de la Universidad s/n, 10003, Cáceres, Spain
| | - Felipe García
- School of Physical and Mathematical Science, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21, Nanyang Link, 637371, Singapore
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5
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Ritter C, Weigend F, von Hänisch C. Synthesis of a Molecule with Five Different Adjacent Pnictogens. Chemistry 2020; 26:8536-8540. [PMID: 32428313 PMCID: PMC7383748 DOI: 10.1002/chem.202002279] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Indexed: 12/13/2022]
Abstract
The first molecular compound with all five pnictogens was obtained by a multi-step reaction. Lithiation of the (bisamido)diazadiarsetidine (tBuNAs)2 (tBuNH)2 in aliphatic solvents leads to the dimeric metallated species [(tBuNAs)2 (tBuNLi)2 ]2 (12 ). Upon reactions with AsCl3 , SbCl3 and BiCl3 the polycyclic compounds [(tBuNAs)2 (tBuN)2 ]PnCl (Pn=As (2), Sb (3), Bi (4)) can be obtained. Conversion of 2-4 with [tBu2 SbP(tBu)Li(OEt2 )]2 leads to the remarkable interpnictogens [(tBuNAs)2 (tBuN)2 ]PnP(tBu)SbtBu2 (Pn=As (5), Sb (6), Bi (7)), whereby 7 is the first example of a molecule containing all five Group 15 elements. The compound with adjacent AsNBiPSb-chains is surprisingly stable and does not show high sensibility against light as the labile Bi-P bond might suggest.
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Affiliation(s)
- Christian Ritter
- Department of Chemistry andWissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität MarburgHans-Meerwein-Straße 435032MarburgGermany
| | - Florian Weigend
- Department of ChemistryPhilipps-Universität MarburgHans-Meerwein-Straße 435032MarburgGermany
| | - Carsten von Hänisch
- Department of Chemistry andWissenschaftliches Zentrum für Materialwissenschaften (WZMW)Philipps-Universität MarburgHans-Meerwein-Straße 435032MarburgGermany
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6
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Musongong JT, Otang ME, Mash BL, Zeller M, Stahl L. Covalent and ionic bonding in bi- and tricyclic Group 15 amides: equidistant P-I and As-I bonds and fluxional cations. Dalton Trans 2020; 49:6341-6354. [PMID: 32347265 DOI: 10.1039/d0dt01163k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of trivalent Group 15 bis(tert-butylamido)cyclodiphosph(iii)azane element bi- and tricycles of the formulae {[(tBuNP)2(tBuN)2]ElX}, El = P, As, Sb, Bi, where X = Ph, OPh, OtBu, N3, hexamethyldisilylamide (HMDS), OTf, was synthesized from the corresponding chlorides via salt elimination. The ensuing compounds were studied spectroscopically and X-ray crystallographically with a particular focus on the length of the El-X bond. While the Group 15 element to phenyl and HMDS were of normal lengths and completely covalent, those to azide appeared to be partly ionic. The {[(tBuNP)2(tBuN)2]ElI} showed El-I bonds that were substantially longer than the typical element iodide bonds, suggesting a very high degree of polarity and bordering on ionic bonding. Finally, the triflate [(tBuNP)2(tBuN)2]P] + [SO3CF3]- proved to be an ion pair in the solid state. The antimony analog, however, showed a long covalent Sb-O bond in the solid state, although it appears to dissociate into ions in solution. The phosphonium triflate salt is fluxional and exhibits a previously unseen highly symmetrical structure in solution. The bonding trends from completely covalent to completely ionic are discussed in terms steric restrictions and the delocalization of charge in either the cation or the anion.
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Affiliation(s)
- Joseph T Musongong
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
| | - Mathew E Otang
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
| | - Brandon L Mash
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907 USA
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, IN, 47907 USA
| | - Lothar Stahl
- Department of Chemistry, University of North Dakota, Grand Forks, ND, 58202 USA.
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7
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Mecke E, Frank W. Crystal structure of 1,3-di- tert-butyl-2-chloro-1,3,2-di-aza-phospho-rinane - a saturated six-membered phospho-rus nitro-gen heterocycle with a partially flattened chair conformation and a long P III-Cl bond. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2019; 75:552-556. [PMID: 31110784 PMCID: PMC6505585 DOI: 10.1107/s2056989019004195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 03/28/2019] [Indexed: 11/10/2022]
Abstract
Colourless blocks of 1,3-di-tert-butyl-2-chloro-1,3,2-di-aza-phospho-rinane, C11H24ClN2P (1), were obtained by sublimation in vacuo slightly above room temperature. The asymmetric unit of the monoclinic crystal structure of the six-membered N-heterocyclic compound is defined by one mol-ecule in a general position. The six-membered ring of the mol-ecule adopts a cyclo-hexane-like chair conformation; the chair at one side is to some extent flattened as a result of the approximately trigonal-planar coordination of both nitro-gen atoms. In detail, this modified chair conformation is characterized by an angle of 53.07 (15)° between the plane defined by the three carbon atoms and the best plane of the two nitro-gen atoms and the two carbon atoms bound to them, and an angle of 27.96 (7)° between the latter plane and the plane defined by the nitro-gen and phospho-rus atoms. The tert-butyl groups are oriented equatorially and the chloro substituent is oriented axially. The P-Cl bond length of 2.2869 (6) Å is substanti-ally longer than the P-Cl single-bond length in PCl3 [2.034 Å; Galy & Enjalbert (1982 ▸). J. Solid State Chem. 44, 1-23]. Inspection of the inter-molecular distances gives no evidence for inter-actions stronger than van der Waals forces. The closest contact is between the Cl atom and a methyl-ene group of a neighbouring mol-ecule with a Cl⋯C distance of 3.7134 (18) Å, excluding a significant influence on the P-Cl bonding.
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Affiliation(s)
- Erik Mecke
- Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Walter Frank
- Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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8
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Bresien J, Hinz A, Schulz A, Villinger A. As–N and As–N–P Cage Compounds Generated by [2+2] Addition of Diazenes and Diphosphenes to Diarsadiazanediyls. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jonas Bresien
- Anorganische Chemie Institut für Chemie Universität Rostock A.‐Einstein‐Str. 3a 18059 Rostock Germany
| | - Alexander Hinz
- Department of Chemistry University of Oxford 12 Mansfield Road OX1 3TA Oxford UK
| | - Axel Schulz
- Anorganische Chemie Institut für Chemie Universität Rostock A.‐Einstein‐Str. 3a 18059 Rostock Germany
- Materialdesign Leibniz‐Institut für Katalyse e. V. A.‐Einstein‐Str. 29a 18059 Rostock Germany
| | - Alexander Villinger
- Anorganische Chemie Institut für Chemie Universität Rostock A.‐Einstein‐Str. 3a 18059 Rostock Germany
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9
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Otang ME, Josephson D, Duppong T, Stahl L. The chameleonic reactivity of dilithio bis(alkylamido)cyclodiphosph(iii)azanes with chlorophosphines. Dalton Trans 2018; 47:11625-11635. [DOI: 10.1039/c8dt02087f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Analogous reactions do not necessarily give analogous products.
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Affiliation(s)
- Mathew E. Otang
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - David Josephson
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - Todd Duppong
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
| | - Lothar Stahl
- Department of Chemistry
- University of North Dakota
- Grand Forks
- USA
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10
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Shi YX, Xu K, Clegg JK, Ganguly R, Hirao H, Friščić T, García F. The First Synthesis of the Sterically Encumbered Adamantoid Phosphazane P
4
(N
t
Bu)
6
: Enabled by Mechanochemistry. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605936] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yan X. Shi
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Kai Xu
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Jack K. Clegg
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane, St Lucia QLD 4072 Australia
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Hajime Hirao
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
| | - Tomislav Friščić
- Department of Chemistry McGill University 801 Sherbrooke St. W. Montreal QC H3A 0B8 Canada
| | - Felipe García
- School of Physical and Mathematical Sciences Division of Chemistry and Biological Chemistry Nanyang Technological University 21 Nanyang Link 637371 Singapore Singapore
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11
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Shi YX, Xu K, Clegg JK, Ganguly R, Hirao H, Friščić T, García F. The First Synthesis of the Sterically Encumbered Adamantoid Phosphazane P4 (N(t) Bu)6 : Enabled by Mechanochemistry. Angew Chem Int Ed Engl 2016; 55:12736-40. [PMID: 27539926 DOI: 10.1002/anie.201605936] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 07/29/2016] [Indexed: 01/11/2023]
Abstract
All reported attempts to synthesize the tert-butyl-substituted adamantoid phosph(III)azane P4 (N(t) Bu)6 have failed, leading to the classification of this molecule as inaccessible and a literature example of steric control in chemistry of phosphorus-nitrogen compounds. We now demonstrate that this structure is readily accessible by a solvent-free mechanochemical milling approach, highlighting the importance of mechanochemical reaction environments in evaluating chemical reactivity.
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Affiliation(s)
- Yan X Shi
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Kai Xu
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, St Lucia, QLD, 4072, Australia
| | - Rakesh Ganguly
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Hajime Hirao
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
| | - Tomislav Friščić
- Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC, H3A 0B8, Canada
| | - Felipe García
- School of Physical and Mathematical Sciences, Division of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore.
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12
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Holthausen MH, Weigand JJ. Formation of the spirocyclic, Si-centered cage cations [ClP(NSiMe3)2Si(NSiMe3)2P5](+) and [P5(NSiMe3)2Si(NSiMe3)2P5](2). Dalton Trans 2016; 45:1953-61. [PMID: 26074340 DOI: 10.1039/c5dt01512j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
On account of our interest in P4 activation by phosphenium ion insertion into P-P bonds we have developed synthetic routes to bicyclic N-P-Si-heterocycle 7 and probed its reactivity towards GaCl3 and P4. A GaCl3-induced rearrangement of 7 leads to the in situ formation of spirocyclic, Si-centered phosphenium ions. Their insertion into P-P bonds of one or two P4 tetrahedra yields polyphosphorus cages [ClP(NSiMe3)2Si(NSiMe3)2P5](+) (19(+)) and [P5(NSiMe3)2Si(NSiMe3)2P5](2+) (13(2+)).
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Affiliation(s)
- M H Holthausen
- TU Dresden, Fachrichtung Chemie und Lebensmittelchemie, Professur für Anorganische Molekülchemie, 01062 Dresden, Germany.
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13
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Hinz A, Schulz A, Villinger A. New PN Cage Compounds Generated by Small-Molecule Activation. Chemistry 2014; 20:3913-6. [DOI: 10.1002/chem.201400143] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Indexed: 11/06/2022]
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14
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El-Wahab HA, El-Fattah MA, El-Khalik NA, Sharaby CM. Synthesis and performance of flame retardant additives based on cyclodiphosph(V)azane of sulfaguanidine,1,3-di-[N/-2-pyrimidinylsulfanilamide]-2, 2, 2.4, 4, 4-hexachlorocyclodiphosph(V)azane and 1,3-di-[N/-2-pyrimidinylsulfanilamide]-2, 4-di[aminoacetic acid]-2, 4-dichlorocyclodiphosph(V)azane incorporated into polyurethane varnish. PROGRESS IN ORGANIC COATINGS 2012; 74:615-621. [DOI: 10.1016/j.porgcoat.2012.02.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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15
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Lehmann M, Schulz A, Villinger A. An Unusual Isomerization to Tetraazastiboles. Angew Chem Int Ed Engl 2011; 50:5221-4. [DOI: 10.1002/anie.201100663] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Indexed: 11/11/2022]
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16
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Lehmann M, Schulz A, Villinger A. Eine ungewöhnliche Isomerisierung zu Tetraazastibolen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100663] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Affiliation(s)
- Axel Schulz
- Universität Rostock, Institut für Chemie, Albert-Einstein-Str.3a, 18059 Rostock, Germany
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Alexander Villinger
- Universität Rostock, Institut für Chemie, Albert-Einstein-Str.3a, 18059 Rostock, Germany
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18
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Schranz I, Stahl L. Syntheses of Group 14 bis(tert-butylamido)cyclodiphosph(III)azane dichlorides, and the solid-state structures of the silicon and tin derivatives. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Affiliation(s)
- Axel Schulz
- Universität Rostock Institut für Chemie Albert-Einstein-Str.3a, 18059 Rostock, Germany
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Alexander Villinger
- Universität Rostock Institut für Chemie Albert-Einstein-Str.3a, 18059 Rostock, Germany
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20
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Michalik D, Schulz A, Villinger A. Lewis-Acid-Assisted Methyl Exchange Reactions In Silylated Aminodichloroarsanes. Inorg Chem 2008; 47:11798-806. [DOI: 10.1021/ic801526n] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Dirk Michalik
- Institut für Chemie, Abteilung Anorganische Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Axel Schulz
- Institut für Chemie, Abteilung Anorganische Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Alexander Villinger
- Institut für Chemie, Abteilung Anorganische Chemie, Universität Rostock, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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21
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Michalik D, Schulz A, Villinger A, Weding N. A cationic cyclic phosphorus(III) azide. Angew Chem Int Ed Engl 2008; 47:6465-8. [PMID: 18618885 DOI: 10.1002/anie.200801674] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dirk Michalik
- Universität Rostock, Institut für Chemie, Albert-Einstein-Strasse 3a, 18059 Rostock, Germany
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22
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Michalik D, Schulz A, Villinger A, Weding N. Ein kationisches cyclisches Phosphor(III)-azid. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801674] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Burck S, Gudat D, Nieger M, Schalley CA, Weilandt T. Phosphazene vs.diazaphospholene PN-bond cleavage in spirocyclic cyclodiphosphazenes. Dalton Trans 2008:3478-85. [DOI: 10.1039/b717219b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Sharaby CM, Mohamed GG, Omar MM. Preparation and spectroscopic characterization of novel cyclodiphosph(V)azane of N(1)-2-pyrimidinylsulfanilamide complexes. Magnetic, thermal and biological activity studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2007; 66:935-48. [PMID: 16926107 DOI: 10.1016/j.saa.2006.04.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2006] [Accepted: 04/17/2006] [Indexed: 05/11/2023]
Abstract
Hexachlorocyclophosph(V)azane of sulfadiazine, (sulfupyrimidine) [N(1)-2-pyrimidinylsulfanilamide] (H2L1), was prepared and reacted with sulfur and glycine to give (H2L2) and (H2L3) ligands, respectively. The prepared ligands; H2L1, H2L2 and H2L3, react in 1:2 [ligands]:[metal ions] molar ratio with transition metals to give coloured complexes in a relatively good yields. The complexes were characterized using different physicochemical techniques, namely elemental analyses, IR, UV-vis, mass, 1H NMR, molar conductance, magnetic, solid reflectance and thermal analysis. The spectral data reveal that all the ligands behave as neutral bidentate ligands and coordinated to the metal ions via pyrimidine-N and enolic sulfonamide OH. The molar conductance data reveal that the complexes are non-electrolytes while UV-vis, solid reflectance and magnetic moment data have been shown that the complexes have octahedral geometry. The thermal behaviour of the complexes is studied and the thermodynamic activation parameters are calculated. The ligands and their complexes show high to moderate bactericidal activity.
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Affiliation(s)
- Carmen M Sharaby
- Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt.
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25
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Richards PI, Steiner A. A Spirocyclic System Comprising Both Phosphazane and Phosphazene Rings. Inorg Chem 2004; 44:275-81. [PMID: 15651873 DOI: 10.1021/ic048665f] [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
The reaction of hexakis(cyclohexylamino) cyclotriphosphazene [NP(CyNH)(2)](3), 1, with phosphorus trichloride yields [NP(CyN)(2)PCl](3), 2, which contains three four-membered phosphazane rings fused in spirocyclic fashion to a central six-membered phosphazene ring and constitutes the first structurally characterized compound that comprises both phosphazene and phosphazane rings. The peripheral P atoms feature stereoactive lone pairs, and, thus, 2 exists in isomeric C(3h) and C(s) forms. The spirocyclic phosphazene-phosphazane derivative 2 carries three reactive PCl functions in peripheral positions, promising an interesting precursor molecule for the synthesis of extended phosphorus nitrogen structures of high rigidity. Extension of the PN moiety can be achieved by reaction of 2 with a primary amine yielding [NP(CyN)(2)PN(H)(t)Bu](3), 3, which features a central scaffold of 6 phosphorus and 12 nitrogen centers and aggregates via N-H...P hydrogen bonds in the solid state. On the contrary, the reaction of 1 with SbCl(3) undergoes incomplete proton abstraction, resulting in the formation of the tricyclic compound N(3)P(3)(CyNH)(4)(CyNSbCl(2))(2), 4, which contains two four-coordinate Sb centers chelated by N(exo)-N(ring) sites of the phosphazene.
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Affiliation(s)
- Philip I Richards
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, UK
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26
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Kumar KP, Chakravarty M, Swamy KCK. Synthesis and Structures of New Oxidation/ Cycloaddition Products of ?3-Cyclodiphosphazanes. Z Anorg Allg Chem 2004. [DOI: 10.1002/zaac.200400275] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Armstrong A, Chivers T, Parvez M, Schatte G, Boeré RT. Lithiation of (tBuNH)3PNSiMe3 and Formation of Tetraimidophosphate Complexes Containing M3O3 Rings (M = Li, K): X-ray Structure of the Stable Radical {(Me3SiN)P(μ3-NtBu)3[μ3-Li(THF)]3(OtBu)}. Inorg Chem 2004; 43:3453-60. [PMID: 15154808 DOI: 10.1021/ic035377v] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of ((t)BuNH)(3)PNSiMe(3) (1) with 1 equiv of (n)BuLi results in the formation of Li[P(NH(t)Bu)(2)(N(t)Bu)(NSiMe(3))] (2); treatment of 2 with a second equivalent of (n)BuLi produces the dilithium salt Li(2)[P(NH(t)Bu)(N(t)Bu)(2)(NSiMe(3))] (3). Similarly, the reaction of 1 and (n)BuLi in a 1:3 stoichiometry produces the trilithiated species Li(3)[P(N(t)Bu)(3)(NSiMe(3))] (4). These three complexes represent imido analogues of dihydrogen phosphate [H(2)PO(4)](-), hydrogen phosphate [HPO(4)](2)(-), and orthophosphate [PO(4)](3)(-), respectively. Reaction of 4 with alkali metal alkoxides MOR (M = Li, R = SiMe(3); M = K, R = (t)Bu) generates the imido-alkoxy complexes [Li(3)[P(N(t)Bu)(3)(NSiMe(3))](MOR)(3)] (8, M = Li; 9, M = K). These compounds were characterized by multinuclear ((1)H, (7)Li, (13)C, and (31)P) NMR spectroscopy and, in the cases of 2, 8, and 9.3THF, by X-ray crystallography. In the solid state, 2 exists as a dimer with Li-N contacts serving to link the two Li[P(NH(t)Bu)(2)(N(t)Bu)(NSiMe(3))] units. The monomeric compounds 8 and 9.3THF consist of a rare M(3)O(3) ring coordinated to the (LiN)(3) unit of 4. The unexpected formation of the stable radical [(Me(3)SiN)P(mu(3)-N(t)Bu)(3)[mu(3)-Li(THF)](3)(O(t)Bu)] (10) is also reported. X-ray crystallography indicated that 10 has a distorted cubic structure consisting of the radical dianion [P(N(t)Bu)(3)(NSiMe(3))](.2)(-), two lithium cations, and a molecule of LiO(t)Bu in the solid state. In dilute THF solution, the cube is disrupted to give the radical monoanion [(Me(3)SiN)((t)BuN)P(mu-N(t)Bu)(2)Li(THF)(2)](.-), which was identified by EPR spectroscopy.
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Affiliation(s)
- Andrea Armstrong
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4
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Kommana P, Vittal J, Kumara Swamy K. Synthesis and structures of novel bis- and tetrakis-cyclodiphosphazane compounds appended to a diol or a tetra-ol. Polyhedron 2003. [DOI: 10.1016/s0277-5387(02)01421-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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29
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Balakrishna MS, Panda R, Mague JT. New 10-membered inorganic heterocyclic diphosphanes, PhN(PX)(2)[(-OC(6)H(2)((T)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)] (x = cl, f). Synthesis and transition metal complexes (molybdenum(0), ruthenium(II), palladium(II), and platinum(II)) of heterocyclic diphosphanes. crystal and molecular structures of the chloro derivative, PhN(PCl)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)], and of a molybdenum(0) complex of the fluoro derivative, [Mo(CO)(3)[eta(3)-PhN(PF)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)]-kappa P,kappa P,kappa S]]. Inorg Chem 2001; 40:5620-5. [PMID: 11599962 DOI: 10.1021/ic010518j] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Bis(dichlorophosphino)aniline, PhN(PCl(2))(2), reacts with stoichiometric amounts of 2,2'-thiobis(4,6-di-tert-butylphenol) to afford a 10-membered heterocycle, PhN(PCl)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t))Bu)(2)C(6)H(2)O-)] (1), in high yield. The structure of the heterocycle has been determined by a single-crystal X-ray analysis. The 10-membered heterocycle 1 reacts with SbF(3) to afford the corresponding fluoro derivative 2 in good yield. The compounds 1 and 2 act as tridentate ligands with molybdenum carbonyl derivatives, forming complexes of the type [Mo(CO)(3)[eta(3)-PhN(PX)(2)[(-OC(6)H(2)((t)Bu)(2))(mu-S)(((t)Bu)(2)C(6)H(2)O-)]-kappa P,kappa P,kappa S]] (3 X = Cl, 4 X = F). A crystal structure of the fluoro derivative 4 showed the facial tricarbonyl complex comprising a relatively strain-free tetracyclic structure with molybdenum in an octahedral environment; the two phosphorus and the sulfur centers were the donor atoms. Compound 2 readily reacts with Ru(II), Pd(II), and Pt(II) derivatives to form chelate complexes, demonstrating the eta(2) mode of coordination.
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Affiliation(s)
- M S Balakrishna
- Department of Chemistry, Indian Institute of Technology, Bombay, Powai, Mumbai 400 076, India.
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31
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Haagenson DC, Stahl L, Staples RJ. Syntheses and structures of bis(azido)- and bis(tert-butoxy)cyclodistibazanes. Inorg Chem 2001; 40:4491-3. [PMID: 11487362 DOI: 10.1021/ic010247c] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- D C Haagenson
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 09208, USA
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32
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Chivers T, Krahn M, Parvez M, Schatte G. Preparation and x-ray structures of alkali-metal derivatives of the ambidentate anions [tBuN(E)P(mu-NtBu)2P(E)NtBu]2- (E = S, Se) and [tBuN(Se)P(mu-NtBu)2PN(H)tBu)]-. Inorg Chem 2001; 40:2547-53. [PMID: 11350233 DOI: 10.1021/ic001093o] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ambidentate dianions [(t)BuN(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu](2)(-) (5a, E = S; 5b, E = Se) are obtained as their disodium and dipotassium salts by the reaction of cis-[(t)Bu(H)N(E)P(mu-N(t)Bu)(2)P(E)N(H)(t)Bu] (6a, E = S; 6b, E = Se), with 2 equiv of MN(SiMe(3))(2) (M = Na, K) in THF at 23 degrees C. The corresponding dilithium derivative is prepared by reacting 6a with 2 equiv of (t)BuLi in THF at reflux. The X-ray structures of five complexes of the type [(THF)(x)()M](2)[(t)BuN(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu] (9, M = Li, E = S, x = 2; 11a/11b, M = Na, E = S/Se, x = 2; 12a, M = K, E = S, x = 1; 12b, M = K, E = Se, x = 1.5) have been determined. In the dilithiated derivative 9 the dianion 5a adopts a bis (N,S)-chelated bonding mode involving four-membered LiNPS rings whereas 11a,b and 12a,b display a preference for the formation of six-membered MNPNPN and MEPNPE rings, i.e., (N,N' and E,E')-chelation. The bis-solvated disodium complexes 11a,b and the dilithium complex 9 are monomeric, but the dipotassium complexes 12a,b form dimers with a central K(2)E(2) ring and associate further through weak K.E contacts to give an infinite polymeric network of 20-membered K(6)E(6)P(4)N(4) rings. The monoanions [(t)Bu(H)N(E)P(mu-N(t)Bu)(2)P(E)N(t)Bu)](-) (E = S, Se) were obtained as their lithium derivatives 8a and 8b by the reaction of 1 equiv of (n)BuLi with 6a and 6b, respectively. An X-ray structure of the TMEDA-solvated complex 8a and the (31)P NMR spectrum of 8b indicate a N,E coordination mode. The reaction of 6b with excess (t)BuLi in THF at reflux results in partial deselenation to give the monolithiated P(III)/P(V) complex [(THF)(2)Li[(t)BuN(Se)P(mu-N(t)Bu)(2)PN(H)(t)Bu]] 10, which adopts a (N,Se) bonding mode.
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Affiliation(s)
- T Chivers
- Department of Chemistry, University of Calgary, Calgary, Alberta, Canada T2N 1N4.
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Stahl L. Bicyclic and tricyclic bis(amido)cyclodiphosph(III)azane compounds of main group elements. Coord Chem Rev 2000. [DOI: 10.1016/s0010-8545(00)00312-x] [Citation(s) in RCA: 160] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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