Sw. Zhang et al., SYNTHESES AND X-RAY CRYSTAL-STRUCTURES OF NEUTRAL TRANS-BIS(DIAMINO-CARBENE)PLATINUM(II) COMPLEXES, Journal of organometallic chemistry, 489(1-2), 1995, pp. 62-64
The first neutral trans-bis(diamino-carbene)platinum(II) complex 2 is
prepared by the re action of trans-diiodo[bis(p-tolyliso-cyanide)]plat
inum(II) 1 with a secondary amine, N,N-dipropylamine, while on applyin
g a primary amine, N-propylamine, a neutral ortho-metalled trans-bis(d
iamino-carbene)platinum(II) complex 3 is obtained in good yield. The s
tructures of carbene complexes 2 and 3 have been established by X-ray
crystallography.