Cationic phenyl and chloro-platinum(II) complexes with cyanamides and cyanoguanidine. X-ray structure of trans-[Pt(Ph)(NCNMe2)(PPh3)2][BPh4]
作者:Cristina M.P. Ferreira、M.Fátima C. Guedes da Silva、Teresa Duarte、João J.R. Fraústo da Silva、Armando J.L. Pombeiro、Rino A. Michelin、Vadim Yu. Kukushkin
DOI:10.1016/s0020-1693(02)00746-6
日期:2002.5
The phenyl-platinum(II) organocyanamide trans-[Pt(Ph)(NCNR2)(PPh3)(2)][BPh4] (R = Me la, Et 1b) or cyanoguanidine cis-[Pt(Ph)NCNC(NH2)(2)}(PPh3)(2)][BPh4] (2) complexes have been prepared by treatment of cis-[PtCl,(PPh3)(2)] in THF with NCNR, or NCNC(NH2)(2), respectively, in the presence of Na[BPh4], whereas the cyanoguanidine chloro-complex cis[PtClNCNC(NH2)(2)}(PPh3)(2)][BF4] (3) has been obtained by using Tl[BF4] instead of Na[BPh4]. Complex 3 reacts further with cyanoguanidine, in the presence of Na[BPh4], to produce the di(cyanoguanidine) cis-[PtNCNC(NH2)(2)}(2)(PPh3)(2)][BPh4](2) complex 5, whereas the amine complex cis-[PtCl(NH2R')(PPh3)(2)][BF4] (R' = CH2C6H4Me-4, 4) is formed on reaction of the former with NH2R' in CH2Cl2. The X-ray structure of la is also reported. (C) 2002 Elsevier Science B.V. All rights reserved.