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Yu X, Pang M, Zhang S, Hu X, Tung CH, Wang W. Terminal Thiolate-Dominated H/D Exchanges and H2 Release: Diiron Thiol–Hydride. J Am Chem Soc 2018; 140:11454-11463. [DOI: 10.1021/jacs.8b06996] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xin Yu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
| | - Maofu Pang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
| | - Shengnan Zhang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
| | - Xinlong Hu
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
| | - Wenguang Wang
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, No. 27 South Shanda Road, Jinan, 250100, P. R. China
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Sorasaenee K, Galán-Mascarós JR, Dunbar KR. Isolation of the novel dirhodium(II/II) thiolate compound Rh(2)(eta(1)-C(6)H(5)S)(2)(mu-C(6)H(5)S)(2)(bpy)(2). Inorg Chem 2003; 42:661-3. [PMID: 12562175 DOI: 10.1021/ic020630x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of the anticancer active compound [Rh(2)(mu-O(2)CCH(3))(2)(bpy)(2)(CH(3)CN)(2)][BF(4)](2) (1) (bpy = 2,2'-bipyridine) with NaC(6)H(5)S under anaerobic conditions yields Rh(2)(eta(1)-C(6)H(5)S)(2)(mu-C(6)H(5)S)(2)(bpy)(2).CH(3)OH (2), which was characterized by UV-visible, IR, and (1)H NMR spectroscopies as well as single-crystal X-ray crystallography. Compound 2 crystallizes as dark red platelets in the monoclinic space group C2/c with cell parameters a = 20.398(4) A, b = 11.861(2) A, c = 17.417(4) A, beta = 108.98 degrees, V = 3984.9(14) A(3), Z = 4. The main structural features are the presence of a [Rh(2)](4+) core with a Rh-Rh distance of 2.549(2) A bridged by two benzene thiolate ligands in a butterfly-type arrangement. The axial positions of the [Rh(2)](4+) core are occupied by two terminal benzene thiolates. Cyclic voltammetric studies of 2 reveal that the compound exhibits an irreversible oxidation at +0.046 V in CH(3)CN, which is in accord with the fact that the compound readily oxidizes in the presence of O(2). The fact that this unusual dirhodium(II/II) thiolate compound is formed under these conditions is an important first step in understanding the metabolism of dirhodium anticancer active compounds with thiol-containing peptides and proteins.
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Affiliation(s)
- Karn Sorasaenee
- The Department of Chemistry, Texas A&M University, College Station, Texas 77843, USA
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Sellmann D, Gottschalk-Gaudig T, Heinemann FW. Transition Metal Complexes with Sulfur Ligands. 130.(1) Synthesis, Structure, and Reactivity of the Sulfur-Rich Ruthenium Hydride Complexes [Ru(H)(PR(3))('S(4)')](-) and the eta(2)-H(2) Complex [Ru(H(2))(PCy(3))('S(4)')] (R = Ph, (i)Pr, Cy; 'S(4)'(2-) = 1,2-Bis((2-mercaptophenyl)thio)ethane(2-)). Inorg Chem 1998; 37:3982-3988. [PMID: 11670513 DOI: 10.1021/ic971068r] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydride and eta(2)-H(2) ruthenium complexes with sulfur-rich coordination spheres were synthesized. Substitution of either DMSO or PPh(3) in [Ru(DMSO)(PR(3))('S(4)')] and [Ru(PPh(3))(2)('S(4)')] by hydride anions from LiAlH(4) or NaBEt(3)H yielded [Ru(H)(PR(3))('S(4)')](-) complexes (R = (i)Pr, Ph, Cy; 'S(4)'(2)(-) = 1,2-bis((2-mercaptophenyl)thio)ethane(2-)). They were isolated as [Li(THF)(Et(2)O)][Ru(H)(PR(3))('S(4)')] (R = (i)Pr (1a), Cy (1b), Na[Ru(H)(PCy(3))('S(4)')].2BEt(3).0.5DMSO (2a), and the solvent-free Na[Ru(H)(PPh(3))('S(4)')].2BEt(3) (2b). X-ray structure determinations of 1a.0.5Et(2)O and 1b.Et(2)O showed that in both complexes pseudooctahedral [Ru(H)(PR(3))('S(4)')](-) anions are bridged to pseudotetrahedral [Li(THF)(Et(2)O)] cations via the hydride ligand and one thiolate donor of the 'S(4)'(2)(-) ligand (crystal data: 1a, monoclinic, P2(1)/n, a = 1401.6(2) pm, b = 1045.2(3) pm, c = 2590.6(4) pm, beta = 95.04(1) degrees, V = 3.780(1) nm(3), Z = 4; 1b, triclinic, P&onemacr;, a = 1264.2(1) pm, b = 1322.9(3) pm, c = 1569.5(2) pm, alpha = 88.96(1) degrees, beta = 83.48(1) degrees, gamma = 62.16(1) degrees, V = 2.3042(6) nm(3), Z = 2). Short intramolecular C-H.H-Ru contacts ( approximately 230 pm) between the hydride ligands, phosphine substituents, and lithium-coordinated Et(2)O molecules indicate "unconventional" hydrogen bonds. They potentially help to decrease the hydridic character of the hydride ligand to such an extent that no structural hydride trans influence can be observed in the solid state. In solution at room temperature, all hydride complexes 1a-2b rapidly release H(2) or HD, when treated with CH(3)OH or CD(3)OD. Low-temperature (1)H and (2)H NMR spectroscopy between -20 and -80 degrees C showed that initially eta(2)-H(2) or eta(2)-HD complexes form. Their formation explains the observed scrambling between protons and hydride ligands, which requires a heterolytic cleavage of dihydrogen. A 1:1:1 triplet at delta = -6.5 ppm ((1)J(HD) = 32 Hz, (2)J(PH) = 5 Hz) and a relaxation time of T(1)(min) = 4 ms (-60 degrees C, 270 MHz) firmly established the formation of the eta(2)-dihydrogen complexes. The reversibility of H(2) release and uptake by [Ru(PCy(3))('S(4)')] fragments and the heterolytic cleavage of H(2) in [Ru(eta(2)-H(2))(PCy(3))('S(4)')] was further ascertained by the reaction of [Ru(DMSO)(PCy(3))('S(4)')] with H(2) in the presence of NaOMe, yielding the [Ru(H)(PCy(3))('S(4)')](-) anion. The relevance of the complexes and their reactions for the heterolytic H(2) activation at the transition metal sulfur sites of hydrogenases is discussed.
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Affiliation(s)
- Dieter Sellmann
- Institut für Anorganische Chemie der Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany
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Sellmann D, Rackelmann GH, Heinemann FW, Knoch F, Moll M. Transition metal complexes with sulfur ligands Part CXXV. Synthesis and characterization of hydrido and chloro complexes with rhodium sulfur cores. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05931-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Sellmann D, Rackelmann GH, Heinemann FW. Heterolytic Activation of Dihydrogen at Transition-Metal Sulfur Sites in Coordinatively Unsaturated [rh(L)(“buS4”)]BF4 Complexes, Involving Neutral Hydrides, Thiol Hydrides, and Thiol–Hydride Proton Scrambling (L = CO, PCy3; “buS4”2- = 1,2-Bis[(2-mercapto-3,5-di-tert-butylphenylthio]ethane2-). Chemistry 1997. [DOI: 10.1002/chem.19970031224] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sellmann D, Wemple MW, Donaubauer W, Heinemann FW. Synthesis, Structure, and Reactivity of Ruthenium and Osmium Nitrido Complexes with 1,2-Benzenedithiolate Ligands: N- versus S-Alkylation. Inorg Chem 1997; 36:1397-1402. [PMID: 11669718 DOI: 10.1021/ic961240b] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reactivity of the nitrido complexes (N(n)Bu(4))[Ru(N)(S(2)C(6)H(4))(2)] (1) and (N(n)Bu(4))[Os(N)(S(2)C(6)H(4))(2)] (2) (C(6)H(4)(SH)(2) = 1,2-benzenedithiol) toward electrophiles, R(+) (R = Me, Et, Ph(3)C), is described. While 1 yielded intractable mixtures of products, 2 could be cleanly alkylated. The synthesis of 1 has been reported previously (Z.Naturforsch. 1987, 42B, 341); complex 2 can be synthesized by treating (N(n)Bu(4))[Os(N)Cl(4)] with deprotonated 1,2-benzenedithiol in acetone/MeOH at 0 degrees C. Complexes 1 and 2 are isostructural and crystallize in the orthorhombic space group Pna2(1), Z = 8, with a = 36.881(6) Å, b = 9.402(2) Å, and c = 17.652(2) Å for 1 and a = 37.042(4) Å, b = 9.375(2) Å, and c = 17.671(2) Å for 2. The anions of both compounds consist of a five-coordinate mononuclear center with a distorted square-pyramidal geometry; a terminal nitrido ligand occupies the apical position and two chelating (S(2)C(6)H(4))(2)(-) ligands form the basal plane. Treatment of 2 with R(3)OBF(4) in CH(2)Cl(2) yields [Os(N)(S(2)C(6)H(4))(SC(6)H(4)SR)] (R = Me, 3; R = Et, 4) where one thiolate donor is alkylated. Alkylation of the sulfur of the 1,2-benzenedithiolate ligand was confirmed by NMR spectroscopy and X-ray crystallography (for 3). Complex 3.CH(2)Cl(2) crystallizes in the orthorhombic space group P2(1)2(1)2(1), Z = 4, with a = 8.551(1) Å, b = 10.772(2) Å, and c = 19.716(3) Å. In contrast, treatment of 2 with Ph(3)CPF(6) in CH(2)Cl(2) yields [Os(NCPh(3))(S(2)C(6)H(4))(2)] (5), whose (1)H and (13)C NMR spectra indicate that the terminal nitride is the site of electrophilic attack. X-ray crystallography further confirms the alkylation at the nitrogen atom; complex 5 crystallizes in the triclinic space group P&onemacr;, Z = 2, with a = 9.338(8) Å, b = 10.001(3) Å, c = 16.280(6) Å, alpha = 75.88(3) degrees, beta = 74.29(6) degrees, and gamma = 69.55(5) degrees.
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Affiliation(s)
- Dieter Sellmann
- Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany
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Allgeier AM, Slone CS, Mirkin CA, Liable-Sands LM, Yap GPA, Rheingold AL. Electrochemically Controlling Ligand Binding Affinity for Transition Metals via RHLs: The Importance of Electrostatic Effects. J Am Chem Soc 1997. [DOI: 10.1021/ja963008a] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alan M. Allgeier
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
| | - Caroline S. Slone
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
| | - Chad A. Mirkin
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
| | - Louise M. Liable-Sands
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
| | - Glenn P. A. Yap
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
| | - Arnold L. Rheingold
- Contribution from the Department of Chemistry, 2145 Sheridan Road, Northwestern University, Evanston, Illinois 60208, and Department of Chemistry, University of Delaware, Newark, Delaware 19716
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Osakada K, Yamamoto T. Oxidative Addition of Benzenethiol to [Rh(PMe3)4]Cl Giving Cationic and Neutral Hydrido(benzenethiolato)rhodium(III) Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1994. [DOI: 10.1246/bcsj.67.3271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Transition metal complexes with sulfur ligands LXIII. π-Electron delocalization and partial ruthenium sulfur multiple bonding in ruthenium bis-1,2-benzenedithiolate complexes: X-ray structure analyses and redox chemistry of [Ru(‘S2’)2(PMe3)2]n (n=0, −1; ‘S2’2−=1,2-benzenedithiolate(2−)). Inorganica Chim Acta 1991. [DOI: 10.1016/s0020-1693(00)85420-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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