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Kaur U, Saha K, Bairagi S, Das A, Roisnel T, Paine TK, Ghosh S. Structural and electronic analysis of bimetallic thiolate complexes of group-5 transition metal ions. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kar S, Saha K, Saha S, Kirubakaran B, Dorcet V, Ghosh S. Trimetallic Cubane-Type Clusters: Transition-Metal Variation as a Probe of the Roots of Hypoelectronic Metallaheteroboranes. Inorg Chem 2018; 57:10896-10905. [PMID: 30124293 DOI: 10.1021/acs.inorgchem.8b01531] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In an effort to synthesize chalcogen-rich metallaheteroborane clusters of group 5 metals, thermolysis of [Cp*TaCl4] (Cp* = η5-C5Me5) with thioborate ligand Li[BH2S3] was carried out, affording trimetallic clusters [(Cp*Ta)3(μ-S)3(μ3-S)3B(R)], 1-3 (1, R = H; 2, R = SH; and 3, R = Cl). Clusters 1-3 are illustrative examples of cubane-type organotantalum sulfido clusters in which one of the vertices of the cubane is missing. In parallel to the formation of 1-3, the reaction also yielded tetrametallic sulfido cluster [(Cp*Ta)4(μ-S)6(μ3-S)(μ4-O)], 6, having an adamantane core structure. Compound 6 is one of the rarest examples containing the μ4-oxo unit with a heavier early transition metal, i.e., tantalum. In an effort to isolate selenium analogues of clusters 1-3, we have isolated the trimetallic cluster [(Cp*Ta)3(μ-Se)3(μ3-Se)3B(H)], 4, from the thermolytic reaction of [Cp*TaCl4] and Li[BH2Se3]. In contrast, the thermolysis of [Cp*TaCl4] with Li[BH2Te3] under the same reaction conditions yielded tantalum telluride complex [(Cp*Ta)2(μ-Te)2], 5. Compounds 1-4 are hypo-electronic clusters with an electron count of 50 cluster valence electrons. All these compounds have been characterized by 1H, 11B{1H}, and 13C{1H} NMR spectroscopy; infrared spectroscopy; mass spectrometry; and single-crystal X-ray crystallography. The density functional theory calculations were also carried out to provide insight into the bonding and electronic structures of these molecules.
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Affiliation(s)
- Sourav Kar
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Koushik Saha
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | - Suvam Saha
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
| | | | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes , UMR 6226 CNRS-Ecole Nationale Supérieure de Chimie de Rennes-Université de Rennes 1 , F-35042 Rennes Cedex, France
| | - Sundargopal Ghosh
- Department of Chemistry , Indian Institute of Technology Madras , Chennai 600036 , India
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Mondal B, Bag R, Bakthavachalam K, Varghese B, Ghosh S. Synthesis, Structures, and Characterization of Dimeric Neutral Dithiolato‐Bridged Tungsten Complexes. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201701088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bijan Mondal
- Department of Chemistry Indian Institute of Technology Madras 600036 Chennai India
| | - Ranjit Bag
- Department of Chemistry Indian Institute of Technology Madras 600036 Chennai India
| | - K. Bakthavachalam
- Department of Chemistry Indian Institute of Technology Madras 600036 Chennai India
| | - Babu Varghese
- Sophisticated Analytical Instruments Indian Institute of Technology Madras 600036 Chennai India
| | - Sundargopal Ghosh
- Department of Chemistry Indian Institute of Technology Madras 600036 Chennai India
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Cioncoloni G, Sproules S, Wilson C, Symes MD. Unprecedented Inequivalent Metal Coordination Environments in a Mixed-Ligand Dicobalt Complex. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Giacomo Cioncoloni
- WestCHEM; School of Chemistry; University of Glasgow; University Avenue G12 8QQ Glasgow United Kingdom
| | - Stephen Sproules
- WestCHEM; School of Chemistry; University of Glasgow; University Avenue G12 8QQ Glasgow United Kingdom
| | - Claire Wilson
- WestCHEM; School of Chemistry; University of Glasgow; University Avenue G12 8QQ Glasgow United Kingdom
| | - Mark D. Symes
- WestCHEM; School of Chemistry; University of Glasgow; University Avenue G12 8QQ Glasgow United Kingdom
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Iranpoor N, Rahimi S, Panahi F. Synthesis of new surfactant-like triazine-functionalized ligands for Pd-catalyzed Heck and Sonogashira reactions in water. RSC Adv 2015. [DOI: 10.1039/c5ra06753g] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
N
2,N4,N6-Tridodecyl-1,3,5-triazine-2,4,6-triamine (TDTAT) is introduced as a new surfactant-like triazine-functionalized ligand for the efficient Pd-catalyzed Heck and Sonogashira reactions in water.
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Affiliation(s)
- Nasser Iranpoor
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Sajjad Rahimi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Farhad Panahi
- Department of Chemistry
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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Chiu WH, Zhang QF, Williams ID, Leung WH. Addition of Dimethyl Acetylenedicarboxylate to the [WSe4]2− Anion. Organometallics 2010. [DOI: 10.1021/om100142d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wai-Hang Chiu
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China
| | - Qian-Feng Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, Anhui 243002, People's Republic of China
| | - Ian D. Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China
| | - Wa-Hung Leung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China
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Bose SK, Geetharani K, Ramkumar V, Varghese B, Ghosh S. Chemistry of Vanadaboranes: Synthesis, Structures, and Characterization of Organovanadium Sulfide Clusters with Disulfido Linkage. Inorg Chem 2010; 49:2881-8. [DOI: 10.1021/ic9023597] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shubhankar Kumar Bose
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - K. Geetharani
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - V. Ramkumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Babu Varghese
- Sophisticated Analytical Instruments Facility, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Sundargopal Ghosh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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Adams H, Bancroft MN, Morris MJ, Riddiough AE. Sequential Construction of One, Two, or Three Dithiolene Ligands from Alkynes and Sulfur in Dinuclear Cyclopentadienyl Molybdenum Complexes. Inorg Chem 2009; 48:9557-66. [DOI: 10.1021/ic901243m] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Harry Adams
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | | | - Michael J. Morris
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
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Lim PJ, Slizys DA, Tiekink ERT, Young CG. Formation of Mono(dithiolene)−Thiocarboxamido Complexes in Reactions of Thio(dithiocarbamato)−Mo/W Complexes and Dimethyl Acetylenedicarboxylate. Inorg Chem 2004; 44:114-21. [PMID: 15627367 DOI: 10.1021/ic048882g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions of TpMS(S(2)CNEt(2)) with dimethyl acetylenedicarboxylate in dichloromethane produce olive green/black TpM{S(2)C(2)(CO(2)Me)(2)}(SCNEt(2)-kappa(2)S,C) (M = Mo (1), W (2); Tp = hydrotris(3,5-dimethylpyrazol-1-yl)borate). The seven-coordinate complexes exhibit pseudo-octahedral (1) and distorted pentagonal bipyramidal (2) coordination spheres comprised of tridentate fac-Tp, bidentate dithiolene, and thiocarboxamido-kappa(2)S,C ligands. In the solid state, molecules of 1 exhibit pseudo-C(s)() symmetry, with the thiocarboxamide NEt(2) group in a cleft in the Tp ligand. Molecules of 2 have C(1) symmetry in the solid state; here, the thiocarboxamide unit is orientated along one of the W-S(dithiolene) bonds with its NEt(2) group projecting away from the Tp ligand. Both complexes possess effective C(s)() symmetry in solution. Reaction of TpMoI(CO)(3) with AgS(2)CNEt(2) affords olive green TpMo(S(2)CNEt(2))(CO)(2) (3), which reacts with propylene sulfide in a new synthesis for TpMoS(S(2)CNEt(2)), the starting material for 1. Complex 3 exhibits a distorted pentagonal bipyramidal structure, the axial sites being defined by a Tp nitrogen atom and a carbonyl ligand, the pentagonal plane by the remaining nitrogen and carbonyl donors and the two sulfur atoms of the bidentate dithiocarbamate ligand.
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Affiliation(s)
- Patrick J Lim
- School of Chemistry, University of Melbourne, Victoria 3010, Australia, Victorian College of Pharmacy, Monash University, Clayton, Victoria 3168, Australia
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Rakowski DuBois M, Jagirdar BR, Dietz S, Noll BC. Syntheses of Dinuclear Rhenium Complexes with Disulfido and Sulfido Ligands. Organometallics 1997. [DOI: 10.1021/om9608972] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Rakowski DuBois
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - Balaji R. Jagirdar
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - S. Dietz
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - B. C. Noll
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
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Rambo JR, Castro SL, Folting K, Bartley SL, Heintz RA, Christou G. Magnetochemical Properties and Reactions of Vanadium(III) Thiolate Complexes: Preparation of (NEt(4))(3)[V(3)Cl(6)(edt)(3)] and Mixed-Valence (NEt(4))[V(2)(edt)(4)] (edt = Ethane-1,2-dithiolate). Inorg Chem 1996; 35:6844-6852. [PMID: 11666852 DOI: 10.1021/ic9606901] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reactions of the previously reported dinuclear vanadium(III) thiolate anion [V(2)(edt)(4)](2)(-) (edtH(2) = ethane-1,2-dithiol) are described. Treatment of (NEt(4))(2)[V(2)(edt)(4)] (1) in MeCN with equimolar (C(12)H(8)S(2))BF(4) (C(12)H(8)S(2)(+) = the thianthrenium radical cation) results in a one-electron oxidation and isolation of the V(III),V(IV) complex (NEt(4))[V(2)(edt)(4)] (2). The same product can also be obtained by controlled-potential electrolysis of 1 at -0.20 V vs Ag/AgCl. Treatment of 1 in CH(2)Cl(2) with py gives no reaction, but addition of Me(3)SiCl leads to formation of the known V(2)OCl(4)(py)(6) (3). The latter is also formed by the reduction of a 1:1 mixture of VOCl(3) and VCl(3)(THF)(3) in CH(2)Cl(2)/py and by the reaction in CH(2)Cl(2) of VCl(3)(THF)(3) and py with edt(2)(-). Treatment of 1 in MeCN with bpy (2,2'-bipyridine) gives no reaction, but addition of Me(3)SiCl results in formation and isolation of [V(2)OCl(2)(bpy)(4)]Cl(2) (4) identified by spectroscopic comparison with literature data. The reaction of 1 in MeCN with equimolar VCl(3)(THF)(3) and NEt(4)Cl gives (NEt(4))(3)[V(3)Cl(6)(edt)(3)] (5). A more convenient procedure to 5 is the reaction in MeCN of VCl(3)(THF)(3), Na(2)edt, and NEt(4)Cl in a 1:1:1 molar ratio. Complex 5.MeCN crystallizes in triclinic space group P&onemacr; with (at -154 degrees C) a = 14.918(3) Å, b = 17.142(5) Å, c = 11.276(3) Å, alpha = 106.78(1) degrees, beta = 95.03(1) degrees, gamma = 106.18(1) degrees, and Z = 2. The anion contains a near-linear V(3) unit with a face-sharing trioctahedral structure: the three edt(2)(-) groups provide the six bridging S atoms; two edt(2)(-) groups are in a &mgr;-eta(2):eta(2) mode (as in 1), but the third is in a &mgr;(3)-eta(1):eta(2):eta(1) mode. The V.V separations (>3.1 Å) preclude V-V bonding. Variable-temperature solid-state magnetic susceptibility studies have been performed on complexes 1, 2, and 5 in a 1.0 kG field and 5.00-300 K temperature range. For 1, the effective magnetic moment (&mgr;(eff)) gradually decreases from 1.09 &mgr;(B) at 300 K to 0.26 &mgr;(B) at 5.00 K. The data were fit to the Bleaney-Bowers equation, and the fitting parameters were J = -419(11) cm(-)(1) and g = 2.05. The singlet-triplet gap is thus 838 cm(-)(1). For 2, &mgr;(eff) is essentially temperature-independent, slowly decreasing from 1.90 &mgr;(B) at 300 K to 1.86 &mgr;(B) at 55 K and then to 1.63 &mgr;(B) at 5.00 K. The complex thus is S = (1)/(2) with no thermally accessible S = (3)/(2) state. The combined data on 1 and 2, together with the results of EHT calculations, show that 1 and 2 contain a V-V single bond tying up two of the d electrons and that the remaining two d electrons in 1 are antiferromagnetically coupled to give an S = 0 ground state and S = 1 excited state; for 2, the one remaining d electron gives an S = (1)/(2) state. For 5, &mgr;(eff) increases from 5.17 &mgr;(B) at 320 K to a maximum of 6.14 &mgr;(B) at 30.0 K and then decreases slightly to 6.08 &mgr;(B) at 5.00 K. The data were fit to the appropriate theoretical expression to give J = +42.5(6) cm(-)(1), J' = -1.8(5) cm(-)(1), and g = 1.77, where J and J' gauge the interactions between adjacent and terminal V(III) atoms, respectively. The complex has an S = 3 ground state and represents a very rare example of ferromagnetic coupling between V(III) centers.
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Affiliation(s)
- Joe R. Rambo
- Department of Chemistry and Molecular Structure Center, Indiana University, Bloomington, Indiana 47405-4001
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Dean NS, Folting K, Lobkovsky E, Christou G. Strukturell neuartige VIII-Komplexe mit zentraler [V3(μ3-S)(μ-S2)3]+ - oder [Vz2(μ-O)(μ-SPh)2]2+ -Einheit. Angew Chem Int Ed Engl 1993. [DOI: 10.1002/ange.19931050435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Ligand addition versus substitution in the slow reaction of 13CO with Mn(CO)−4 in a flowing afterglow apparatus. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0168-1176(92)80092-f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Brunner H, Graßl R, Meier W, Wachter J, Nuber B, Ziegler ML. Einfluß verschiedenartig substituierter cyclopentadienylliganden auf die chemie schwefelreicher organometallkomplexe mit metallen der 6. Nebengruppe. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83354-k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Formation and Reactions of Organosulfur and Organoselenium Organometallic Compounds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 1991. [DOI: 10.1016/s0065-3055(08)60478-5] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Bakar WAWA, Davidson JL, Lindsell WE, McCullough KJ. Synthesis and dynamic nuclear magnetic resonance studies of pentafluorobenzenethiolate complexes of molybdenum and tungsten. The crystal and molecular structures of [W(SC6F5)3(CO)(η5-C5H5)]·0.5CH2Cl2and [N(PPh3)2][Mo(SC6F5)4(η5-C5H5)]. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/dt9900000061] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wachter J. Synthesis, Structure and Reactivity of Sulfur-Rich Cyclopentadienyl-Transition Metal Complexes: Sulfur Chemistry from an Organometallic Point of View. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/anie.198916131] [Citation(s) in RCA: 120] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wachter J. Synthese, Struktur und Reaktivität schwefelreicher Cyclopentadienylübergangsmetallkomplexe: Schwefelchemie aus metallorganischer Sicht. Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891011205] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Untersuchungen zur Reaktivität von Cyclopentadienylchromsulfiden Gegenüber Luftsauerstoff und Elektrophilen und Röntgenstrukturanalyse von Cp*2Cr2(μ,η2-S2)(μ-S2) (Cp* = η5-C5Me5). J Organomet Chem 1989. [DOI: 10.1016/0022-328x(89)85427-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Courtot-Coupez J, Guéguen M, Guerchais J, Pétillon F, Talarmin J, Mercier R. Electrochemically-induced isomerization of {(η5-C5H5)Mo(CO)2(μ-SR)}2 (R Me, t-Bu, Ph) complexes. 1H NMR and electrochemical studies. Sythesis and X-ray crystal structure of {(η5-C5H5)Mo(CO)2(μ-S-t-Bu)}2(BF4)2. J Organomet Chem 1986. [DOI: 10.1016/0022-328x(86)80282-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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