Please use this identifier to cite or link to this item:
|Title:||Heterocyclic thionates as a new class of bridging ligands in oxo-centered triangular cyclopentadienylchromium(III) complexes||Authors:||Ng, V.W.L.
|Issue Date:||25-Jul-2005||Citation:||Ng, V.W.L., Seah, L.K., Weng, K.L., Lip, L.K., Geok, K.T., Lai, Y.G., Webster, R.D. (2005-07-25). Heterocyclic thionates as a new class of bridging ligands in oxo-centered triangular cyclopentadienylchromium(III) complexes. Inorganic Chemistry 44 (15) : 5229-5240. ScholarBank@NUS Repository. https://doi.org/10.1021/ic048287e||Abstract:||The interactions of the benzothiazolate complex, CpCr(CO) 2(SCSN(C6H4)) (2), and the tetrazole thiolate complex, CpCr(CO)3(η1-SCN4Ph) (3), with controlled amounts of Me3OBF4 and (MeO)2SO 2, respectively, produced the corresponding μ3-oxo trinuclear thionate-bridged complexes, [Cp3Cr3(μ 2-OH)(μ3-O)(μ2-η2- SCSN(C6H4))2](5)BF4 (45%) and [Cp3Cr3(μ2-OH)(μ3-O) (μ2-η2-SCN4Ph)2](9) (MeOSO3) (53%), together with their respective free dimethylated thiolate ligands, [MeSCSNMe(C6H4)](4)BF4 and (Me2SCN4Ph)(8)MeOSO3. The reaction of 3 with Me3OBF4 resulted in the isolation of a binuclear complex, [Cp2Cr2(μ-OH)(μ-η2-SCN 4Ph)2](7)BF4 (43%), and (8)BF4 (27%). The reaction of the thiopyridine complex, CpCr(CO)2(SPy) (4), with I2 also produced a similar μ3-oxo complex 10 (31%), together with CpCrI2(THF) (11) and the disulfide (SPy) 2. Similar reactions with 2 and 3 and I2 yielded species 5 and 7, together with 11 and disulfides derived from their respective ligands. Cyclic voltammograms recorded in solutions of 5 and 9 indicated that the compounds could be reduced and oxidized at very similar potentials. An EPR spectrum characteristic of a compound with axial symmetry was obtained for 9 at 7 K. Single-crystal X-ray diffraction analyses confirmed that species 7 is dinuclear, whereas 5 and 9 are structural trinuclear analogues, each containing a μ3-oxo central core. © 2005 American Chemical Society.||Source Title:||Inorganic Chemistry||URI:||http://scholarbank.nus.edu.sg/handle/10635/93920||ISSN:||00201669||DOI:||10.1021/ic048287e|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Nov 14, 2019
WEB OF SCIENCETM
checked on Nov 6, 2019
checked on Oct 26, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.