摘要:
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[PtCl{NCNC(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-[Pt{NCNC(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.