title: Disulfuration and hydrosulfuration of an alkyne at a 1,2-dicarba-closo-dodecaborane-thiolate ligand.
abstract: The reaction of the dinuclear cobalt compound [(CpCoS(2)C(2)B(10)H(10))(CpCoSC(2)B(10)H(11))(n-C(4)H(9)S)] (1) with HC≡CC(O)Fc leads to the cobalt-free products (C(2)B(10)H(10))(SCH=CHCOFc)(2) (4-6), (S(2)C(2)B(10)H(10))(HC=CCOFc) (7), and (C(2)B(10)H(11))(SCH=CHCOFc) (8, 9). 4-6 are produced by hydrosulfuration of the alkyne at the 1,2-dicarba-closo-dodecaborane-dithiolate ligand with the generated vinyl groups in Z/Z, Z/E and E/E configurations, respectively. In 7, the alkyne is added to 1,2-dicarba-closo-dodecaborane-dithiolate at the two sulfur sites. 8 and 9 are the products of alkyne hydrosulfuration at the 1,2-dicarba-closo-dodecaborane-1-monothiolate ligand with the generated vinyl group in either Z or E configuration. The treatment of 1 with HC≡CCO(2)Me gives rise to the parallel products (C(2)B(10)H(10))(SCH=CHCO(2)Me)(2) (10-12) and (C(2)B(10)H(11))(SCH=CHCO(2)Me) (13, 14). All of the new compounds have been characterized by IR, NMR, elemental analysis and mass spectroscopy. The structures of compounds 4, 7, and 8 have also been determined by single-crystal X-ray diffraction analysis.
authors.affiliation: State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Jiangsu, 210093, China.
authors.forename: Hongde
authors.initials: H
authors.lastname: Ye
authors.forename: Baohua
authors.initials: B
authors.lastname: Xu
authors.forename: Mingshi
authors.initials: M
authors.lastname: Xie
authors.forename: Yizhi
authors.initials: Y
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D001896:Boron Compounds / Q000737:chemistry*; D003035:Cobalt / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008968:Molecular Conformation; D013455:Sulfur / Q000737:chemistry*
chemical_list: D000480:Alkynes; D001896:Boron Compounds; D056831:Coordination Complexes; D008024:Ligands; D003035:Cobalt; D013455:Sulfur