1
|
Amemiya E, Loo A, Shlian DG, Parkin G. Rhenium versus cadmium: an alternative structure for a thermally stable cadmium carbonyl compound. Chem Sci 2020; 11:11763-11776. [PMID: 34123203 PMCID: PMC8162458 DOI: 10.1039/d0sc04596a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 09/07/2020] [Indexed: 11/21/2022] Open
Abstract
An alternative description is provided for the previously reported novel tetranuclear cadmium carbonyl compound, [Cd(CO)3(C6H3Cl)]4. Specifically, consideration of single crystal X-ray diffraction data indicates that the compound is better formulated as the rhenium compound, [Re(CO)3(C4N2H3S)]4. Furthermore, density functional theory calculations predict that, if it were to exist, [Cd(CO)3(C6H3Cl)]4 would have a very different structure to that reported. While it is well known that X-ray diffraction may not reliably distinguish between atoms of similar atomic number (e.g. N/C and Cl/S), it is not generally recognized that two atoms with very different atomic numbers could be misassigned. The misidentification of two elements as diverse as Re and Cd (ΔZ = 27) is unexpected and serves as an important caveat for structure determinations.
Collapse
Affiliation(s)
- Erika Amemiya
- Department of Chemistry, Columbia University New York 10027 USA
| | - Aaron Loo
- Department of Chemistry, Columbia University New York 10027 USA
| | - Daniel G Shlian
- Department of Chemistry, Columbia University New York 10027 USA
| | - Gerard Parkin
- Department of Chemistry, Columbia University New York 10027 USA
| |
Collapse
|
2
|
Sanders VA, Iskhakov D, Abdel-Atti D, Devany M, Neary MC, Czerwinski KR, Francesconi LC. Synthesis, characterization and biological studies of rhenium, technetium-99m and rhenium-188 pentapeptides. Nucl Med Biol 2018; 68-69:1-13. [PMID: 30578134 DOI: 10.1016/j.nucmedbio.2018.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 10/19/2018] [Accepted: 11/01/2018] [Indexed: 02/05/2023]
Abstract
A pentapeptide macrocyclic ligand, KYCAR (lysyl-tyrosyl-cystyl-alanyl-arginine), has been designed as a potential chelating ligand for SPECT imaging and therapeutic in vivo agents. This study shows the synthesis and characterization of KYCAR complexes containing nonradioactive rhenium, 99mTc, or 188Re. The metal complexes were also biologically evaluated to determine in vivo distribution in healthy mice. The overall goals of this project were (1) to synthesize the Tc/Re pentapeptide complexes, (2) to identify spectroscopic methods for characterization of syn versus anti rhenium peptide complexes, (3) to analyze the ex vivo stability, and (4) to assess the biological properties of the [99mTc]TcO-KYCAR and [188Re]ReO-KYCAR complexes in vivo. Details on these efforts are provided below. METHODS NatRe/99mTc/188ReO-KYCAR complexes were synthesized, and macroscopic species were characterized via HPLC, IR, NMR, and CD. These characterization data were compared to the crystallographic data of ReO-KYC to assist in the assignment of diastereomers and to aid in the determination of the structure of the complex. RESULTS The radiometal complexes were synthesized with high purity (>95%). HPLC, IR, NMR and CD data on the macroscopic natReO-KYCAR complexes confirm the successful complexation as well as the presence of two diastereomers in syn and anticonformations. Tracer level complexes show favorable stabilities ex vivo for 2+ h. CONCLUSION Macroscopic metal complexes form diastereomers with the KYCAR ligand; however, this phenomenon is not readily observed on the tracer level due to the rapid interconversion. It was determined through pKa measurements that the macroscopic natReO-KYCAR complex is 0 at physiological pH. The [99mTc]TcO-KYCAR is stable in vitro while the [188Re]ReO-KYCAR shows 50% decomposition in PBS and serum. Biologically, the tracer level complexes clear through the hepatobiliary pathway. Some decomposition of both tracers is evident by uptake in the thyroid and stomach.
Collapse
Affiliation(s)
- Vanessa A Sanders
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, NV, USA; Department of Chemistry, Hunter College of the City University of New York, New York, NY, USA.
| | - David Iskhakov
- Department of Chemistry, Hunter College of the City University of New York, New York, NY, USA
| | - Dalya Abdel-Atti
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Matthew Devany
- Department of Chemistry, Hunter College of the City University of New York, New York, NY, USA
| | - Michelle C Neary
- Department of Chemistry, Hunter College of the City University of New York, New York, NY, USA
| | - Ken R Czerwinski
- Department of Chemistry, University of Nevada Las Vegas, Las Vegas, NV, USA
| | - Lynn C Francesconi
- Department of Chemistry, Hunter College of the City University of New York, New York, NY, USA; Department of Chemistry, Graduate Center of the City University of New York, New York, NY, USA
| |
Collapse
|
3
|
Halder P, Ghorai S, Banerjee S, Mondal B, Rana A. Iron(ii) complexes of 2-mercaptopyridine as rubredoxin site analogues. Dalton Trans 2018; 46:13739-13744. [PMID: 28956575 DOI: 10.1039/c7dt02645e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, characterization and reactivity studies of iron(ii) complexes [FeII(PySH)4](OTf)2, 1-(OTf)2, [FeII(PySH)4](ClO)4, 1-(ClO4)2, and [FeII(PyS)2]n, (2), of a 2-mercaptopyridine (PySH) ligand are discussed. The X-ray crystal structures of both 1-(OTf)2 and 1-(ClO4)2 reveal a distorted tetrahedral geometry at the iron(ii) center with identical constituents. All the pyridine nitrogen atoms are protonated and thiolate ions are coordinated to the iron(ii) center. The structure and function of complex 1-(OTf)2 or 1-(ClO4)2 resembles the active site of rubredoxin. Complex 2 has octahedral geometry at the iron(ii) center forming a 1-D coordination polymer. Complex 1-(OTf)2 exhibits a high positive redox potential (E1/2 = 0.23 V vs. Ag/AgCl) which reduces to -0.12 V in the presence of triethylamine under an inert atmosphere. This change of the redox potential is highly reversible in the presence of a weak acid such as p-toluenesulfonic acid, pTsOH. DFT studies show that the complex cation [FeII(PySH)4]2+ upon treatment with a base converts to its anionic congener, [FeII(PyS)4]2-, via the deprotonation of the pyridinium moiety. The iron(ii) complexes readily react with molecular oxygen to yield the corresponding iron(iii) complex, which rapidly decays to form pyridine disulphide (Py2S2) and an iron(ii) complex.
Collapse
Affiliation(s)
- Partha Halder
- Department of Chemistry, Scottish Church College, 1 & 3 Urquhart Square, Kolkata-700006, India.
| | | | | | | | | |
Collapse
|
4
|
Sergienko VS, Churakov AV. Specific structural features of monomeric octahedral oxo complexes of d 2-rhenium(V): 2. Structure of monooxo compounds of d 2-re(V) with nitrogen atoms at the trans positions to the O(oxo) ligands. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s1063774515030153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
5
|
Salvarese N, Dolmella A, Refosco F, Bolzati C. Reactivity of the [M(PS)2]+ Building Block (M = ReIII and 99mTcIII; PS = Phosphinothiolate) toward Isopropylxanthate and Pyridine-2-thiolate. Inorg Chem 2015; 54:1634-44. [DOI: 10.1021/ic502632h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nicola Salvarese
- Dipartimento
di Scienze Chirurgiche, Oncologiche e Gastroenterologiche, Università degli Studi di Padova, via Gattamelata 64, 35138 Padua, Italy
| | - Alessandro Dolmella
- Dipartimento
di Scienze del Farmaco, Università degli Studi di Padova, Via Marzolo 5, 35131 Padua, Italy
| | | | | |
Collapse
|
6
|
Lecina J, Cortés P, Llagostera M, Piera C, Suades J. New rhenium complexes with ciprofloxacin as useful models for understanding the properties of [99mTc]-ciprofloxacin radiopharmaceutical. Bioorg Med Chem 2014; 22:3262-9. [DOI: 10.1016/j.bmc.2014.04.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 04/28/2014] [Indexed: 11/15/2022]
|
7
|
Paul P, Seth DK, Richmond MG, Bhattacharya S. Unusual chemical transformations of acetone thiosemicarbazone mediated by ruthenium: C–H bond activation, thiolation, and C–N bond cleavage. RSC Adv 2014. [DOI: 10.1039/c3ra44329a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
8
|
Kirillov AM, Alegria EC, da Silva MFCG, Martins LM, Sousa C, Pombeiro AJ. Synthesis, characterization and redox behaviour of benzoyldiazenido- and oxorhenium complexes bearing N,N- and S,S-type ligands. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.08.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
9
|
Bolzati C, Cavazza-Ceccato M, Agostini S, Tisato F, Bandoli G. Technetium and rhenium in five-coordinate symmetrical and dissymmetrical nitrido complexes with alkyl phosphino-thiol ligands. Synthesis and structural characterization. Inorg Chem 2009; 47:11972-83. [PMID: 19007158 DOI: 10.1021/ic801436d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactivity of bulky alkylphosphino-thiol ligands (PSH) toward nitride-M(V, VI) (M = Tc/Re) precursors was investigated. Neutral five-coordinate monosubstituted complexes of the type [M(N)(PS)Cl(PPh(3))] (Tc1-4, Re1-2) were prepared in moderate to high yields. It was found that these [M(N)(PS)Cl(PPh(3))] species underwent ligand-exchange reactions under mild conditions when reacted with bidentate mononegative ligands having soft donor atoms such as dithiocarbamates (NaL(n)) to afford stable dissymmetrical mixed-substituted complexes of the type [M(N)(PS)(L(n))] (Tc5,8-10, Re5-9) containing two different bidentate chelating ligands bound to the [M[triple bond]N](2+) moiety. In these reactions, the dithiocarbamate replaced the two labile monodentate ligands (Cl and PPh(3)) leaving the [M(N)(PS)](+) building block intact. In the above reactions, technetium and rhenium were found to behave in a similar way. Instead, under more drastic conditions, reactions of PSH with [M(N)Cl(2)(PPh(3))(2)] gave a mixture of monosubstituted [M(N)(PS)Cl(PPh(3))] and bis-substituted species [M(N)(PS)(2)] (Tc11-14) in the case of technetium, whereas only monosubstituted [M(N)(PS)Cl(PPh(3))] complexes were recovered for rhenium. All isolated products were characterized by elemental analysis, IR and multinuclear ((1)H, (13)C, and (31)P) NMR spectroscopies, ESI MS spectrometry, and X-ray crystal structure determination of the representative monosubstituted [Tc(N)(PStbu)Cl(PPh(3))] (Tc4) and mixed-substituted [Re(N)(PScy)(L(3))] (Re7) and [Re(N)(PSiso)(L(4))] (Re9) complexes. The latter rhenium complexes represent the first example of a square-pyramidal nitrido Re species with the basal plane defined by a PS(3) donor set. Monosubstituted [M(N)(PS)Cl(PPh(3))] species bearing the substitution-inert [M(N)(PS)](+) moieties act as suitable building blocks proposed for the construction of new classes of dissymmetrical nitrido compounds with potential application in the development of essential and target specific (99m)Tc and (188)Re radiopharmaceuticals for imaging and therapy, respectively.
Collapse
|
10
|
Kabir SE, Alam J, Ghosh S, Kundu K, Hogarth G, Tocher DA, Hossain GMG, Roesky HW. Synthesis, structure and reactivity of tetranuclear square-type complexes of rhenium and manganese bearing pyrimidine-2-thiolate (pymS) ligands: versatile and efficient precursors for mono- and polynuclear compounds containing M(CO)3 (M = Re, Mn) fragments. Dalton Trans 2009:4458-67. [DOI: 10.1039/b815337j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
11
|
Yoo HS, Yoon JH, Kim JI, Koh EK, Hong CS. Unprecedented N‐Inserted Disulfide Ligand Stabilized by Coordination to the Electropositive Co
III
Center. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800439] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Houng Sik Yoo
- Department of Chemistry and Center for Electro‐ and Photo‐Responsive Molecules, Korea University, Seoul 136‐713, Korea
| | - Jung Hee Yoon
- Department of Chemistry and Center for Electro‐ and Photo‐Responsive Molecules, Korea University, Seoul 136‐713, Korea
| | - Jae Il Kim
- Department of Chemistry and Center for Electro‐ and Photo‐Responsive Molecules, Korea University, Seoul 136‐713, Korea
| | - Eui Kwan Koh
- Nano‐Bio System Research Team, Korea Basic Science Institute, Seoul 136‐713, Korea
| | - Chang Seop Hong
- Department of Chemistry and Center for Electro‐ and Photo‐Responsive Molecules, Korea University, Seoul 136‐713, Korea
| |
Collapse
|
12
|
Chowdhury S, Nogami M, Canlier A, Koshino N, Ikeda Y. Molecular structures and redox properties of oxorhenium(V) ‘3+1’ mixed ligand complexes with heterocyclic thiolates containing nitrogen. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
López-Torres E, Abram U. Rhenium Complexes with Triazine Derivatives Formed from Semicarbazones and Thiosemicarbazones. Inorg Chem 2008; 47:2890-6. [DOI: 10.1021/ic702326v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elena López-Torres
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstraße 34-36, D-14195 Berlin, Germany
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstraße 34-36, D-14195 Berlin, Germany
| |
Collapse
|
14
|
Garnovskii AD, Kharisov BI, Blanco LM, Garnovskii DA, Burlov AS, Vasilchenko IS, Bondarenko GI. SOME ASPECTS OF COMPETITIVE COORDINATION OF β-DIKETONES AND NITROGEN-CONTAINING LIGANDS. J COORD CHEM 2006. [DOI: 10.1080/00958979908054903] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Boris I. Kharisov
- b Facultad de Ciencias Quimicas, Universidad Autónoma de Nuevo León , Monterrey , México
| | - Leonor M. Blanco
- b Facultad de Ciencias Quimicas, Universidad Autónoma de Nuevo León , Monterrey , México
| | | | - Anatoly S. Burlov
- a Institute of Physical & Organic Chemistry, Rostov State University , Russia
| | - Igor S. Vasilchenko
- a Institute of Physical & Organic Chemistry, Rostov State University , Russia
| | | |
Collapse
|
15
|
Braband H, Neubacher S, Grosskopf S, Abram U. Nitridorhenium(V) Complexes with 1,3,4-Triphenyl-1,2,4-triazol-5-ylidene. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200500074] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
16
|
Rhenium(III) and technetium(III) complexes with 2-mercapto-1,3-azole ligands and X-ray crystal structures. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Valls E, Martin D, Piera C, Suades J. Preparation and characterization of technetium-99m complexes with new diphosphines containing polyether groups. J Labelled Comp Radiopharm 2005. [DOI: 10.1002/jlcr.1005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
Albertin G, Antoniutti S, Bacchi A, Fregolent B, Pelizzi G. New Nitrosylrhenium Hydrides as Precursors of“Diazo” Complexes: Preparation of Hydrazine and Diazene Derivatives. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200300665] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Kinoshita I, James Wright L, Kubo S, Kimura K, Sakata A, Yano T, Miyamoto R, Nishioka T, Isobe K. Design and synthesis of copper complexes of novel ligands based on the pyridine thiolate group. Dalton Trans 2003. [DOI: 10.1039/b210420m] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
20
|
Mahboob N, Miyashita Y, Yamada Y, Fujisawa K, Okamoto KI. Characterization and electrochemical properties for rhenium(III) ion incorporated into linear-type S-bridged trinuclear complexes. Crystal structures of ΔΛ- and ΔΔ/ΛΛ-[Re{Ir(aet)3}2]3+ (aet=2-aminoethanethiolate). Polyhedron 2002. [DOI: 10.1016/s0277-5387(02)01059-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Albertin G, Antoniutti S, Bordignon E, Perinello G. Preparation of new ‘diazo’ complexes of manganese stabilised by phosphite ligands. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(00)00943-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Femia FJ, Chen X, Maresca KP, Babich JW, Zubieta J. Syntheses and structural characterization of rhenium-bis-hydrazinopyrimidine core complexes with thiolate and Schiff base coligands. Inorganica Chim Acta 2000; 310:210-216. [PMID: 20640229 PMCID: PMC2904462 DOI: 10.1016/s0020-1693(00)00287-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The reaction of perrhenate with 2-hydrazinopyrimidine in MeOH-HCl yields [ReCl(3)(eta(1)-NNC(4)H(3)N(2)H)(eta(2)-HNNC(4)H(3)N(2))] (1). The analogous reaction with Na(2)MoO(4) yields [MoCl(3)(eta(1)-NNC(4)H(3)N(2)H)(eta(2)-HNNHC(4)H(3)N(2))] (1a). The reaction of 1 with pyrimidine-2-thiol and triethylamine produces [Re(eta(1)-C(4)H(3)N(2)S)(eta(2)-C(4)H(3)N(2)S)(eta(1)-NNC(4)H(3)N(2))(eta(2)-HNNC(4)H(3)N(2))] (2), while reaction of 1 with the Schiff base HSC(6)H(4)N=C(H)C(6)H(4)OH provides [Re(eta(3)-SC(6)H(4)N=C(H)C(6)H(4)O)(eta(1)-NNC(4)H(3)N(2))(eta(2)-C(6)H(4)O)(eta(1)-NNC(5)H(4)N)(eta(2)-HNNC(5)H(4)N)] (4), was also synthesized by reacting [ReCl(3)(eta(1)-NNC(5)H(4)NH)(eta(2)-HNNC(5)H(4)N)] with HSC(6)H(4)N=C(H)C(6)H(4)OH. The crystal structures of 1-4 have been determined.
Collapse
Affiliation(s)
- Frank J. Femia
- Room 1 -014, Department of Chemistry, Syracuse University, Syracuse, NY 13244 -4100, USA
| | - Xiaoyuan Chen
- Room 1 -014, Department of Chemistry, Syracuse University, Syracuse, NY 13244 -4100, USA
| | | | - John W. Babich
- Biostream, Inc., 160 Second Street, Cambridge, MA 02142, USA
| | - Jon Zubieta
- Room 1 -014, Department of Chemistry, Syracuse University, Syracuse, NY 13244 -4100, USA
| |
Collapse
|
23
|
Fortin S, Beauchamp AL. Preparation and characterization of oxorhenium(V) complexes with 2,2'-biimidazole: the strong affinity of coordinated biimidazole for chloride ions via N-H...Cl- hydrogen bonding. Inorg Chem 2000; 39:4886-93. [PMID: 11196968 DOI: 10.1021/ic000328t] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
N,N'-Dimethylbiimidazole and bipyridine (N-N) react with ReOCl3(OPPh3)(Me2S) to give mer-ReOCl3(N-N) compounds. Nonmethylated biimidazole forms a trans-O,O [ReOCl2(OPPh3)(biimH2)]+ cation, which is tightly associated with the Cl- counterion via N-H...Cl- hydrogen bonding. Hydrolysis of ReOCl3(biimMe2) in wet acetone (5% water) leads to the linear oxo-bridged dinuclear species [(OReCl2(biimMe2)2(mu-O)] containing chelated biimMe2. Acetone solutions containing only 1% water yield the bent oxo-bridged dinuclear species [(OReCl2)2(mu-O)(mu-biimMe2)2], where each Re center retains the ReO2Cl2N2 coordination but the biimMe2 ligands are bridging. The linear oxo-bridged [(OReCl2(biimH2)2(mu-O)] complex obtained with nonmethylated biimidazole includes two Cl- ions held via N-H...Cl- hydrogen bonds, leading to a dianionic [(OReCl2(biimH2...Cl)2(mu-O)]2- unit in the crystals of the PPh4+ salt. The compounds are characterized by IR and NMR spectroscopies, and the structures of [ReOCl2(OPPh3)(biimH2)]Cl, [(OReCl2(biimH2)2(mu-O)](PPh4Cl)(2).2H2O, and [(OReCl2)2(mu-O)(mu-biimMe2)2].acetone are determined by X-ray diffraction.
Collapse
Affiliation(s)
- S Fortin
- Département de Chimie, Université de Montréal, C.P. 6128, Succ. Centre-ville, Montréal, Québec, Canada H3C 3J7
| | | |
Collapse
|
24
|
Battistuzzi G, Cannio M, Battistuzzi R. Synthesis, magnetic, spectroscopic and electrochemical studies of mixed pyrimidine-2-thiolate/triphenylphosphine rhenium(V) and rhenium(III) complexes. Polyhedron 2000. [DOI: 10.1016/s0277-5387(00)00517-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
25
|
Femia FJ, Chen X, Babich JW, Zubieta J. Oxorhenium(V) complexes containing tridentate Schiff-base and monothiol coligands. Inorganica Chim Acta 2000; 300-302:517-524. [PMID: 20592940 PMCID: PMC2893357 DOI: 10.1016/s0020-1693(99)00586-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of [n-(C(4)H(9))(4)N][ReOBr(4)(OPPh(3))] with the tridentate Schiff-base [HOC(6)H(4)C(H)NC(6)H(4)SH] allows for the isolation of [ReOBr{eta(3)-(OC(6)H(4)C(H)NC(6)H(4)S)}] (1). The reaction of [n-(C(4)H(9))(4)N][ReOBr(4)(OPPh(3))] with [HOC(6)H(4)C(H)NC(6)H(4)SH] and the appropriate benzenethiol (C(6)H(4)X-4-SH) where X=H, Br, Cl, F, and OCH(3) in methanol-acetonitrile treated with triethylamine has led to the isolation of a series of rhenium complexes of the type [ReO{eta(3)-(OC(6)H(4)C(H)NC(6)H(4)S)} (eta(1)-C(6)H(4)X-4-S)] (X=H (2), Br (3), Cl (4), F (5), and OCH(3) (6)). Likewise, under similar reaction conditions, the use of benzylmercaptan ligands of the type (C(6)H(4)X-4-CH(2)SH) where X=H, Cl, F, and OCH(3) has led to the isolation of a series of rhenium complexes of the type [ReO{eta(3)-(OC(6)H(4)C(H)NC(6)H(4)S)} (eta(1)-C(6)H(4)X-4-CH(2)S)] (X=H (7), Cl (8), F (9), and OCH(3) (10)). The incorporation of the appropriate amine functionality into the substituent R of the monodentate ligand allows for the isolation of a cationic oxorhenium(V) species, namely, [ReO{eta(3)-(OC(6)H(4)C(H)NC(6)H(4)S)} (eta(1)-C(5)H(4)NH-2-S)][Br] (11).
Collapse
Affiliation(s)
- Frank J Femia
- Department of Chemistry, Syracuse University, Syracuse, NY 13244, USA
| | | | | | | |
Collapse
|
26
|
|
27
|
Maresca KP, Bonavia GH, Babich JW, Zubieta J. Synthesis and characterization of oxorhenium-`3+1' mixed-thiolate complexes. Crystal and molecular structures of [ReO{η3-(SCH2CH2)2S}(C6H4X-4-CH2S)] (X=F, Cl, Br, OMe) and of the pendant thiolate compounds [ReO{η3-(SCH2CH2)2S}(η1-SCH2CH2SCH2CH2SH)] and [ReO{η3-(SCH2CH2)2S}{η1-SCH2CH(OH)CH(OH)CH2SH}]. Inorganica Chim Acta 1999. [DOI: 10.1016/s0020-1693(98)00296-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
28
|
Albertin G, Antoniutti S, Bacchi A, Barbera D, Bordignon E, Pelizzi G, Ugo P. Reactivity of Hydrides FeH(2)(CO)(2)P(2) (P = Phosphites) with Aryldiazonium Cations: Preparation, Characterization, X-ray Crystal Structure, and Electrochemical Studies of Mono- and Binuclear Aryldiazenido Complexes. Inorg Chem 1998; 37:5602-5610. [PMID: 11670708 DOI: 10.1021/ic980430e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mono- and binuclear aryldiazenido complexes [Fe(ArN(2))(CO)(2)P(2)]BPh(4) (1-4) and [{Fe(CO)(2)P(2)}(2)(&mgr;-N(2)Ar-ArN(2))](BPh(4))(2) (5-8) [P = P(OEt)(3), PPh(OEt)(2), PPh(2)OEt, P(OPh)(3); Ar = C(6)H(5), 2-CH(3)C(6)H(4), 4-CH(3)C(6)H(4); Ar-Ar = 4,4'-C(6)H(4)-C(6)H(4), 4,4'-(2-CH(3))C(6)H(3)-C(6)H(3)(2-CH(3)), 4,4'-C(6)H(4)-CH(2)-C(6)H(4)] were prepared by allowing hydride species FeH(2)(CO)(2)P(2) to react with an excess of mono- (ArN(2))(BF(4)) or bis-aryldiazonium (N(2)Ar-ArN(2))(BF(4))(2) salts, respectively, at low temperature. A reaction path involving a hydride-aryldiazene intermediate [FeH(ArN=NH)(CO)(2)P(2)](+), which, through the loss of H(2), affords the final aryldiazenido complexes 1-8, is proposed. The compounds were characterized by (1)H and (31)P{(1)H} NMR spectroscopy (including (15)N isotopic substitution) and X-ray crystal structure determination. The complex [Fe(CO)(2){P(OEt)(3)}(2){&mgr;-4,4'-N(2)(2-CH(3))C(6)H(3)-C(6)H(3)(2-CH(3))N(2)}](BPh(4))(2) (5b) crystallizes in the space group P&onemacr; with a = 15.008(4) Å, b = 17.094(5) Å, c = 10.553(3) Å, alpha = 99.56(1) degrees, beta = 102.80(1) degrees, gamma = 65.30(1) degrees, and Z = 1. The structure is centrosymmetric and consists of binuclear cations with the two iron atoms in a quite regular trigonal bipyramidal environment, with the two CO in the equatorial and the two phosphites in the apical position, respectively. Aryldiazenido complexes 1-8 react with strong acids HX (X = Cl, CF(3)SO(3), CF(3)CO(2)) to give the corresponding aryldiazene derivatives, according to the equilibrium [Fe(ArN(2))(CO)(2)P(2)](+) + HX right harpoon over left harpoon [FeX(ArN=NH)(CO)(2)P(2)](+). Electrochemical studies of both mono- (1-4) and binuclear (5-8) compounds were undertaken, and a mechanism for oxidation and reduction processes is proposed.
Collapse
Affiliation(s)
- Gabriele Albertin
- Dipartimento di Chimica and Dipartimento di Chimica Fisica, Università Ca' Foscari di Venezia, Dorsoduro 2137, 30123 Venezia, Italy, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Centro CNR di Strutturistica Diffrattometrica, Università di Parma, Viale delle Scienze, 43100 Parma, Italy
| | | | | | | | | | | | | |
Collapse
|
29
|
Perez-Lourido P, Romero J, Garcia-Vazquez J, Sousa A, Maresca KP, Rose DJ, Zubieta J. Synthesis and Characterization of Rhenium Phosphinothiolate Complexes. Crystal and Molecular Structures of [HNEt3][Re{P(C6H4S)3}2], [ReOCl{OP(C6H5)2(C6H4S)}{(P(C6H5)2(C6H4S)}], [Re2O5{P(C6H5)2(C6H4S)}2], and [ReOCl{OP(C6H5)2(2-SC6H3-3-SiMe3)}2]. Inorg Chem 1998. [DOI: 10.1021/ic9715299] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
30
|
Expansion of the ‘3 + 1’ concept of oxorhenium-thiolate chemistry to cationic and binuclear complexes. INORG CHEM COMMUN 1998. [DOI: 10.1016/s1387-7003(98)00056-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|