The di-nitrile complexes trans-[PtCl2(NCR)(2)] (R = Me, Ph, CH2Ph) react with an excess of gaseous NH3 in CH2Cl2 at -10 degrees C to form, in high yield, the corresponding di-amidine complexes trans-[PtCl(NH3){HN=C(NH2)R}(2)]Cl in which also one chlorine ligand has been displaced by NH3. The H-1 NMR spectra in DMSO showed the formation of different species which were characterized through NOESY, TOCSY and H-1/C-13 heteronuclear correlations as trans-[Pt(NH3){HN=C(NH2)R}(2)(DMSO)]Cl-2 and trans-[PtCl{HN=C(NH2)R}(2)(DMSO)]Cl. (c) 2005 Elsevier B.V. All rights reserved.
Synthesis and characterisation of the amidine complexes trans-[PtCl(NH3) {HN=C(NH2)R}(2)]Cl (R = Me, Ph, CH2Ph) derived from addition of NH3 to the coordinated nitriles in trans-[PtCl2(N CR)(2)]
BERTANI, ROBERTA;MICHELIN, RINO;MOZZON, MIRTO;
2005
Abstract
The di-nitrile complexes trans-[PtCl2(NCR)(2)] (R = Me, Ph, CH2Ph) react with an excess of gaseous NH3 in CH2Cl2 at -10 degrees C to form, in high yield, the corresponding di-amidine complexes trans-[PtCl(NH3){HN=C(NH2)R}(2)]Cl in which also one chlorine ligand has been displaced by NH3. The H-1 NMR spectra in DMSO showed the formation of different species which were characterized through NOESY, TOCSY and H-1/C-13 heteronuclear correlations as trans-[Pt(NH3){HN=C(NH2)R}(2)(DMSO)]Cl-2 and trans-[PtCl{HN=C(NH2)R}(2)(DMSO)]Cl. (c) 2005 Elsevier B.V. All rights reserved.
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