S. Hadjikakou, P. Aslanidis, P. Karagiannidis
Aug 15, 1991
Citations
0
Influential Citations
30
Citations
Journal
Inorganica Chimica Acta
Abstract
Reactions of [Cu(totp)Br] 4 (totp=tri- o -tolyl-phosphine) with heterocyclic thiones (L) (L=pyridine-2- thione (py2SH), pyrimidine-2-thione (pymtH), 1.3-thiazolidine-2-thione (tzdtH), 1-methyl-1,3-imidazoline-2-thione (meimtH), benz-1,3-imidazoline-2-thione (bzimtH 2 ) and quinoline-2-thione (qntH) afford mononuclear complexes of the general formula [Cu(totp)(L)Br]. The complexes have been characterized by elemental analyses and their IR, UV-Vis and 1 H NMR spectroscopic data. The photolysis in chloroform solutions of these complexes has also been investigated. A single-crystal X-ray diffraction study was carried out on the tzdtH complex [Cu(totp)(tzdtH)Br]. The pale yellow compound crystallizes in the triclinic space group P with a =9.4672(7), b =10.9818(8), c =14.293(1) A, α=93.059(2), β=67.912(2), γ=118.208(2)°, D calc =1.570 Mg m −3 , V =1199.23(9) A 3 and Z =2. The complex exhibits an approximate trigonal planar CuSPBr core with CuS 2.290(1), CuP 2.256(1) and Cu-Br 2.413(0) A. The actual structural type appears to depend upon the identity of the phosphine ligand which has a decreased flexibility because of the steric demands of the ortho positioned methyl groups.