Phosphorus, Sulfur and Silicon and the Related Elements, cilt.187, sa.2, ss.213-224, 2012 (SCI-Expanded)
The reaction of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4- disulfide (Lawesson's Reagent) with two different Grignard reagents gave the corresponding dithiophos-phinic acids (DTPA), CH 3OC 6H 4-(R)P(S)SH; [R = iso-butyl (HL 1) and sec-butyl (HL 2)]. HL 1 and HL 2 were treated with dry ammonia to convert them to the ammonium salts, NH 4L 1 and NH 4L 2. Ni(II) and Co(II) complexes of L 1 and L 2 - [Ni(L 1) 2], [Ni(L 2) 2]; [Co(L 1) 2] 2 and [Co(L 2) 2] 2-were obtained by the reaction of NH 4L 1 and NH 4L 2 with NiCl 2.6H 2O and CoCl 2.6H 2O, respectively, in ethanol. Square-planar nickel complexes [Ni(L 1) 2] and [Ni(L 2) 2] were further reacted with pyridine (Py) to obtain the octahedral complexes, [Ni(Py) 2(L 1) 2] and [Ni(Py) 2(L 2) 2]. The compounds were characterized by elemental analysis, FTIR, APCI/ESI-MS and 1H, 13C, and 31P NMR spectroscopies. The novel nickel(II) complex [Ni(L 2) 2] was characterized by X-ray crystallography. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental resource: Figures S1-S5. © 2012 Copyright Taylor and Francis Group, LLC.