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Sidorenko GV, Miroslavov AE, Tyupina MY. Technetium(I) carbonyl complexes for nuclear medicine: Coordination-chemical aspect. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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2
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Ackermann J, Noufele CN, Hagenbach A, Abram U. Nitrosyltechnetium(I) Complexes with 2-(Diphenylphosphanyl)aniline. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800395] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Janine Ackermann
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
| | - Christelle Nijki Noufele
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
| | - Adelheid Hagenbach
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Fabeckstr. 34/36 14195 Berlin Germany
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3
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Brink A, Helliwell JR. New leads for fragment-based design of rhenium/technetium radiopharmaceutical agents. IUCRJ 2017; 4:283-290. [PMID: 28512575 PMCID: PMC5414402 DOI: 10.1107/s2052252517003475] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 03/03/2017] [Indexed: 05/22/2023]
Abstract
Multiple possibilities for the coordination of fac-[Re(CO)3(H2O)3]+ to a protein have been determined and include binding to Asp, Glu, Arg and His amino-acid residues as well as to the C-terminal carboxylate in the vicinity of Leu and Pro. The large number of rhenium metal complex binding sites that have been identified on specific residues thereby allow increased target identification for the design of future radiopharmaceuticals. The core experimental concept involved the use of state-of-art tuneable synchrotron radiation at the Diamond Light Source to optimize the rhenium anomalous dispersion signal to a large value (f'' of 12.1 electrons) at its LI absorption edge with a selected X-ray wavelength of 0.9763 Å. At the Cu Kα X-ray wavelength (1.5418 Å) the f'' for rhenium is 5.9 electrons. The expected peak-height increase owing to the optimization of the Re f'' was therefore 2.1. This X-ray wavelength tuning methodology thereby showed the lower occupancy rhenium binding sites as well as the occupancies of the higher occupancy rhenium binding sites.
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Affiliation(s)
- Alice Brink
- Department of Chemistry, University of the Free State, Nelson Mandela Drive, Bloemfontein, Free State 9301, South Africa
| | - John R. Helliwell
- School of Chemistry, University of Manchester, Brunswick Street, Manchester M13 9PL, England
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Balasekaran SM, Spandl J, Hagenbach A, Köhler K, Drees M, Abram U. Fluoridonitrosyl Complexes of Technetium(I) and Technetium(II). Synthesis, Characterization, Reactions, and DFT Calculations. Inorg Chem 2014; 53:5117-28. [DOI: 10.1021/ic500229r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Johann Spandl
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Adelheid Hagenbach
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, D-14195 Berlin, Germany
| | - Klaus Köhler
- Department
of Chemistry, Inorganic Chemistry, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Markus Drees
- Department
of Chemistry, Inorganic Chemistry, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Ulrich Abram
- Institute
of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstr. 34/36, D-14195 Berlin, Germany
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5
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Jana MS, Pramanik AK, Sarkar D, Biswas S, Mondal TK. Rhenium(I) complexes with NNS donor thioarylazoimidazole ligands with the cis-{Re(CO)2}+ core: Synthesis, characterization, electrochemical study and DFT calculation. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Kannan R, Pillarsetty N, Gali H, Hoffman TJ, Barnes CL, Jurisson SS, Smith CJ, Volkert WA. Design and synthesis of a bombesin peptide-conjugated tripodal phosphino dithioether ligand topology for the stabilization of the fac-[M(CO)3]+ core (M=(99 m)Tc or Re). Inorg Chem 2011; 50:6210-9. [PMID: 21591746 DOI: 10.1021/ic200491z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A new tumor-seeking tridentate topology consisting of a phosphino dithioether ((HOCH(2))(2)PCH(2)CH(2)S(CH(2))(n)CH(2)SR; PS(2)) ligand framework for the production of kinetically inert and in vivo stable facial [(99m)Tc(CO)(3)(PS(2))](+) or [Re(CO)(3)(PS(2))](+) is described. The X-ray crystal structure of fac-Re(CO)(3)(PS(2))PF(6) is reported. The bioconjugation strategies for incorporating bombesin (BBN) peptides on to the PS(2) tripodal framework and, thereby, de novo designing of GRP receptor-seeking Tc(PS(2)-BBN)(CO)(3) are developed.
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Affiliation(s)
- Raghuraman Kannan
- Department of Radiology, University of Missouri, Columbia, Missouri 65211, USA.
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Armstrong AF, Lebert JM, Brennan JD, Valliant JF. Functionalized Carborane Complexes of the [M(CO)2(NO)]2+ Core (M = 99mTc, Re): A New Class of Organometallic Probes for Correlated in Vitro and in Vivo Imaging. Organometallics 2009. [DOI: 10.1021/om8011807] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea F. Armstrong
- McMaster Institute for Applied Radiation Sciences, McMaster University, Chemical Biology Graduate Program, Department of Chemistry, McMaster University, and Departments of Chemistry and Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
| | - Julie M. Lebert
- McMaster Institute for Applied Radiation Sciences, McMaster University, Chemical Biology Graduate Program, Department of Chemistry, McMaster University, and Departments of Chemistry and Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
| | - John D. Brennan
- McMaster Institute for Applied Radiation Sciences, McMaster University, Chemical Biology Graduate Program, Department of Chemistry, McMaster University, and Departments of Chemistry and Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
| | - John F. Valliant
- McMaster Institute for Applied Radiation Sciences, McMaster University, Chemical Biology Graduate Program, Department of Chemistry, McMaster University, and Departments of Chemistry and Medical Physics & Applied Radiation Sciences, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
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Zobi F, Blacque O, Steyl G, Spingler B, Alberto R. Formation and Reactivity of [(tacn)-N-CO-ReIIIBr(CO)2]+ in Water: a Theoretical and Experimental Study. Inorg Chem 2009; 48:4963-70. [DOI: 10.1021/ic9002803] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabio Zobi
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Olivier Blacque
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Gideon Steyl
- Department of Chemistry, University of the Free State, Bloemfontein 9300, South Africa
| | - Bernhard Spingler
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Roger Alberto
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Schmalle HW, Alberto R. Tetraethylammonium tricarbonylchlorido(isoquinoline-1-carboxylato-κ 2
N, O)technetate(I). Acta Crystallogr Sect E Struct Rep Online 2008; 64:m1213-4. [PMID: 21201647 PMCID: PMC2960740 DOI: 10.1107/s160053680802713x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Accepted: 08/22/2008] [Indexed: 11/23/2022]
Abstract
The asymmetric unit of the title compound, (C8H20N)[Tc(C10H6NO2)Cl(CO)3], consists of two crystallographically independent technetium complexes related via a pseudo-inversion centre and two tetraethylammonium cations. The Tc atoms have slightly distorted octahedral coordination geometries, and they are linked with the cations by intermolecular C—H⋯O and C—H⋯Cl hydrogen-bonding contacts, forming two-dimensional columns, which lie approximately parallel to (001) in the crystal structure. The isochinolate (isoquinoline-1-carboxylate) ligands link the columns by partial π–π stacking [centroid–centroid distance 4.3733 (11) Å], forming a three-dimensional network structure.
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11
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Xiong QF, Chen Y. Review: Deoxyglucose compounds labeled with isotopes different from 18-fuoride: is there a future in clinical practice? Cancer Biother Radiopharm 2008; 23:376-81. [PMID: 18593371 DOI: 10.1089/cbr.2007.0443] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
There are several radionuclide-labeled derivatives of deoxyglucose (DG) that have been developed including 2-fluro-deoxyglucose, ethylenedicysteine-deoxyglucose, diethylenetriaminepentaacetate-deoxyglucose, N-(2'-hydroxybenzyl)-2-amino-2-deoxy-D-glucose, and methyl D-glucoside that were synthesized and successfully labeled in high labeling fields. The former 4 were used for tumor imaging and methyl-D-glucoside for the diagnosis and the monitoring of the functional status of renal tubules. These derivatives are suitable for imaging examinations when labeled with either fluorine-18 (18F), technetium-99m (99mTc), carbon-11 (11C), or gallium-68 (68Ga). These compounds are suitable both for imaging and for therapy if labeled with rhenium-188 (188Re). In the area of molecular imaging of nuclear medicine, derivatives of radionuclide-labeled deoxyglucose will become an important tool for the diagnosis and carcinoma treatment in the clinic.
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Affiliation(s)
- Qing-Feng Xiong
- Department of Nuclear Medicine, Affiliated Hospital, Luzhou Medical College, Luzhou, Sichuan, China
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12
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Kromer L, Spingler B, Alberto R. Substitution reactions with [ReBr2(CO)2(NCCH3)2]−: a convenient route to complexes with the cis-[Re(CO)2]+ core. Dalton Trans 2008:5800-6. [DOI: 10.1039/b805410j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Kirillov AM, Haukka M, Guedes da Silva MFC, Pombeiro AJL. Synthesis, Characterization and Redox Behaviour of Mono‐ and Dicarbonyl Phosphane Rhenium(I) Complexes Bearing N‐, N,N‐ and N,O‐Type Ligands. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Alexander M. Kirillov
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Av. Rovisco Pais, 1049–001 Lisbon, Portugal, Fax: +351‐21‐846‐4455
| | - Matti Haukka
- Department of Chemistry, University of Joensuu, P.O. Box 111, 80101, Joensuu, Finland
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Av. Rovisco Pais, 1049–001 Lisbon, Portugal, Fax: +351‐21‐846‐4455
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Av. Rovisco Pais, 1049–001 Lisbon, Portugal, Fax: +351‐21‐846‐4455
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Lehaire ML, Grundler PV, Steinhauser S, Marti N, Helm L, Hegetschweiler K, Schibli R, Merbach AE. Water-Exchange Study Revealed Unexpected Substitution Behavior of [(CO)2(NO)Re(H2O)3]2+ in Aqueous Media. Inorg Chem 2006; 45:4199-204. [PMID: 16676982 DOI: 10.1021/ic060010m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The pH-dependent water-exchange rates of [(CO)2(NO)Re(H2O(cis))2(H2O(trans))]2+ (1) in aqueous media were investigated by means of 17O NMR spectroscopy at 298 K. Because of the low pK(a) value found for 1 (pK(a) = 1.4 +/- 0.3), the water-exchange rate constant k(obs)(H2O(trans/cis)) was analyzed with a two-pathway model in which k(Re)(H2O(trans/cis)) and k(ReOH)(H2O)(trans/cis)) denote the water-exchange rate constants in trans or cis position to the nitrosyl ligand on 1 and on the monohydroxo species [(CO)2(NO)Re(H2O)2(OH)]+ (2), respectively. Whereas the rate constants k(ReOH)(H2O)(trans)) and k(ReOH)(H2O)(cis)) were determined as (4.2 +/- 2) x 10(-3) s(-1) and (5.8 +/- 2) x 10(-4) s(-1), respectively, k(Re)(H2O)(trans)) and k(Re)(H2O)(cis)) were too small to be determined in the presence of the much more reactive species 2. Apart from the water exchange, an unexpectedly fast C identical with 16O --> C identical withO exchange was also observed via NMR and IR spectroscopy. It was found to proceed through 1 and 2, with rate constants k(Re)(CO) and k(ReOH)(CO) of (19 +/- 4) x 10(-3) s(-1) and (4 +/- 3) x 10(-3) s(-1), respectively. On the other hand, N identical with 16O --> N identical with *O exchange was not observed.
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Affiliation(s)
- Marie-Line Lehaire
- Center for Radiopharmaceutical Science, ETH-PSI-USZ, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
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16
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Marti N, Spingler B, Breher F, Schibli R. Comparative Studies of Substitution Reactions of Rhenium(I) Dicarbonyl−Nitrosyl and Tricarbonyl Complexes in Aqueous Media. Inorg Chem 2005; 44:6082-91. [PMID: 16097829 DOI: 10.1021/ic050442h] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ligand substitution behavior of [ReBr3(CO)3](NEt4)2 (1) and [ReBr3(CO)2(NO)]NEt4 (2) in aqueous media was compared. Ligand exchange reactions were performed with multidentate chelating systems such as picolylaminediacetic acid (L1; N,N',O,O'), nitrilotriacetic acid (L2; N,O,O',O''), iminodiacetic acid (L3; N,O,O'), and bis(2-pyridyl)methane (L4; N,N'). The products of the substitution reactions were isolated and characterized by means of IR, NMR, MS, and X-ray structure analysis. NMR and crystallographic analyses confirmed the formation of single structural isomers in all cases with a ligand-to-metal ratio of 1:1. With ligands L1 and L2 and precursor 1 the tridentately coordinated complexes [Re(L1)(CO)3] (7) and [Re(L2)(CO)3]2- (8) were formed. With precursor 2 the same ligands unexpectedly coordinated tetradentately after displacing a CO ligand, yielding complexes [Re(L1)(CO)(NO)] (3) and [Re(L2)(CO)(NO)]- (4). In both complexes NO was found to be coordinated trans to the carboxylate group. Time-dependent IR spectra of the reaction of 2 with ligand L1 and L2 confirmed the loss of one CO during the reaction. The product of the reaction of 2 with L3 was identified as the neutral complex [Re(L3)(CO)2(NO)] (5), again, with the nitrosyl coordinated trans to the carboxylate. With 1, ligand L3 formed the anionic complex [Re(L3)(CO)3]- (9). Finally the reactions with L4 yielded the complexes [ReBr(L4)(CO)2(NO)]Br (6) and [ReBr(L4)(CO)3] (10), in which bromide was found to be coordinated trans to the NO and CO, respectively. The X-ray structures of 3, 5-7, and 10 are discussed: 3, monoclinic P2(1)/n, with a = 14.6071(6) A, b = 8.0573(3) A, c = 24.7210(11) A, beta = 107.117(5) degrees, and Z = 4; 5, triclinic P1, with a = 6.9091(5) A, b = 9.8828(7) A, c = 14.2834(10) A, alpha = 89.246(9) degrees, beta = 89.420(9) degrees, gamma = 86.196(9) degrees, and Z = 4; 6, triclinic P1, with a = 9.8236(8) A, b = 10.0949(8) A, c = 12.5346(10) A, alpha = 108.679(9) degrees, beta = 111.992(9) degrees, gamma = 95.426(10) degrees, and Z = 2; 10, monoclinic P2(1)/c, with a = 12.7491(12) A, b = 13.3015(13) A, c = 9.0112(9) A, beta = 107.195(2) degrees, and Z = 7.
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Affiliation(s)
- Niklaus Marti
- Centre for Radiopharmaceutical Science, ETH-PSI-USZ, 5232 Villigen, Switzerland
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Schibli R, Marti N, Maurer P, Spingler B, Lehaire ML, Gramlich V, Barnes CL. Syntheses and Characterization of Dicarbonyl−Nitrosyl Complexes of Technetium(I) and Rhenium(I) in Aqueous Media: Spectroscopic, Structural, and DFT Analyses. Inorg Chem 2004; 44:683-90. [PMID: 15679403 DOI: 10.1021/ic049599k] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work describes new synthetic routes to produce mixed carbonyl-nitrosyl complexes of technetium(I) and rhenium(I) in aqueous media. NaNO2, NOHSO4, and NO2(g) have been used to produce in situ nitrous acid as the primary source of NO+. Starting from the organometallic precursor fac-[MX3(CO)3]+, 1 (M = 99Tc, Re; X = Cl, Br), the formation of mixed dicarbonyl-mononitrosyl complexes was observed in aqueous hydrochloric and hydrobromic acid. Time-dependent analyses of the reactions by means of HATR-IR and 99Tc NMR spectroscopy in solution revealed the almost quantitative substitution of one CO ligand by NO+ and, thus, the formation of complexes with facial arrangement of the three pi-acceptor ligands. In the case of technetium, the monomeric complex (NEt4)[TcCl3(CO)2NO] (3a) and the dimeric, chloride-bridged, neutral complex [TcCl(mu-Cl)(CO)2NO]2 (4a) were produced. In the case of rhenium, the monomeric species (NEt4)[ReBr2X(CO)2NO] (X = Br (3b), NO3 (5)) was solely isolated. The X-ray structure of complexes 4a and 5 are discussed. The crystallographic analyses revealed the coordination of the NO+ group trans to the terminal chloride (4a) or the bromide (5), respectively. Crystal data: complex 4a (C4Cl4N2O(6)Tc2), monoclinic, Cc, a = 18.82(3) A, b = 6.103(6) A, c = 12.15(2) A, alpha = 90 degrees , beta = 105.8(2) degrees , gamma = 90 degrees , V = 1343(3) A(3), Z = 4; complex 5 (C10H20N3O(6)Br2Re), orthorhombic, P2(1)2(1)2(1), a = 10.2054(5) A, b = 12.5317(7) A, c = 13.9781(7) A, V = 1787.67(16) A(3), Z = 4. The isolated complexes and their potential facial isomers have been further investigated by density functional theory (DFT) calculations. The energy differences of the isomers are relatively small; however, the calculated energies are consistent with the formation of the observed and isolated compounds. The calculated bond lengths and angles of complex 5 are in good agreement with the data determined by X-ray diffraction. Experiments on the no-carrier-added level starting from fac-[99mTc(H2O)3(CO)3]+ revealed the formation of the complex fac-[99mTcCl(H2O)2(CO)2NO]+ in reasonable good yields. This aqueous-based, synthetic approach will enable the future evaluation of this novel, low-valent metal precursor for potential use in radiopharmacy.
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Affiliation(s)
- Roger Schibli
- Center for Radiopharmaceutical Science, ETH-PSI-USZ, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland.
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Rattat D, Verbruggen A, Berke H, Alberto R. Exploring the nitrosyl-approach: “Re(CO)2(NO)”- and “Tc(CO)2(NO)”-complexes provide new pathways for bioorganometallic chemistry. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.09.074] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kurz P, Spingler B, Fox T, Alberto R. [TcI(CN)3(CO)3]2- and [ReI(CN)3(CO)3]2- :case studies for the binding properties of CN- and CO. Inorg Chem 2004; 43:3789-91. [PMID: 15206855 DOI: 10.1021/ic049774x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cyano carbonyl complexes [(99)Tc(CN)(3)(CO)(3)]2- and [Re(CN)(3)(CO)(3)]2- were synthesized and fully characterized. These complexes are additional members of the well-known d(6) transition metal complex series [M(CN)(3)(CO)(3)](n-). The analytical data obtained in this study thus offer a unique opportunity to study similarities and differences of cyanide and carbonyl binding in transition metal complexes.
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Affiliation(s)
- Philipp Kurz
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Rattat D, Verbruggen A, Schmalle H, Berke H, Alberto R. [M(CO) 2 (NO)] 2+ , a new core in bioorganometallic chemistry: model complexes of [Re(CO) 2 (NO)] 2+ and [ 99m Tc(CO) 2 (NO)] 2+. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.140] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lukens WW, Shuh DK, Schroeder NC, Ashley KR. Identification of the non-pertechnetate species in Hanford waste tanks, Tc(I)--carbonyl complexes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2004; 38:229-233. [PMID: 14740740 DOI: 10.1021/es034318d] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Immobilization of the high-level nuclear waste stored at the Hanford Reservation has been complicated by the presence of soluble, lower-valent technetium species. Previous work by Schroeder and Blanchard has shown that these species cannot be removed by ion-exchange and are difficult to oxidize. The Tc K-edge XANES spectra of the species in Tanks SY-101 and SY-103 were reported by Blanchard, but they could not be assigned to any known technetium complex. We report that the XANES spectra are most likely those of Tc(I)-carbonyl species, especially fac-Tc(CO)3(gluconate)(2-). This is further supported by EXAFS and 99Tc-NMR studies in nonradioactive simulants of these tank wastes.
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Affiliation(s)
- Wayne W Lukens
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
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