Guanidines as neutral monodentate ligands; syntheses and crystal structures of [Co{PhN=C(NHPh)(2)}(2)Cl-2] and [Ag{PhN=C(NHPh)(2)}][SO3CF3]

P J Bailey, K J Grant, S Pace, S Parsons, L J Stewart

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Two complexes exhibiting monodentate metal co-ordination of a neutral guanidine have been synthesized and structurally characterised. Treatment of CoCl2 with 1,2,3-triphenylguanidine in tetrahydrofuran solution produced the tetrahedral complex [Co{(PhN)C(NHPh)(2)}(2)Cl-2] 1 in which the guanidine ligands are co-ordinated through their imine nitrogen atoms alone. Similarly, treatment of the guanidine with Ag[SO3CF3] in toluene provided the linear complex [Ag{(PhN)C(NHPh)(2)}(2)][SO3CF3] 2 in which the triflate counter ion remains uncoordinated, but is hydrogen bonded to the guanidine hydrogen atoms. Both complexes have been characterised by X-ray crystallography.

Original languageEnglish
Pages (from-to)4263-4266
Number of pages4
JournalDalton Transactions
Issue number22
Publication statusPublished - 21 Nov 1997

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