Abstract

The reaction of cis-[PtCl 2(NCMe) 2] with a 5-fold excess of Me 2NH in CH 2Cl 2 at −10°C affords in high yield the bis-amidine complex cis-[PtCl 2{ E-N(H)C(NMe 2)Me} 2] ( E, E- 2), where both the amidine ligands assume the E configuration. E, E- 2 was characterized by X-ray structure analysis, NMR spectroscopy and electrospray ionization mass spectrometry (ESI-MS). The corresponding reactions of trans-[PtCl 2(NCMe) 2] with Me 2NH gave the bis-amidine complex trans-[PtCl 2{ E-N(H)C(NMe 2)Me} 2] ( E, E- 3) and the mono-amidine derivative trans-[PtCl 2{ E-N(H)C(NMe 2)Me}(NCMe)] ( E- 4).

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