H. Hadadzadeh, A. Rezvani, F. Bélanger-Gariépy
Apr 25, 2005
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Influential Citations
13
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract Several new Rh III complexes, [Rh(tpy)(bpy)L](PF 6 ) 2 (tpy=2,2′:6′,2″-terpyridine, bpy=2,2′-bipyridine, and L=monoanions of phenylcyanamide(pcyd)), 4-methylphenylcyanamide (4-MePcyd), 2,4-dimethylphenylcyanamide (2,4-Me 2 pcyd), 4-methoxyphenylcyanamide (4-MeOPcyd), 2-chlorophenylcyanamide (2-Clpcyd) and 2,5-dichlorophenylcyanamide (2,5-Cl 2 pcyd) have been synthesized and characterized by elemental analysis, IR, 1 H NMR and electronic absorption spectroscopies. ORTEP drawing of [Rh(tpy)(bpy)(2,5-Cl 2 pcyd)](PF 6 ) 2 ·1/2CH 3 CN shows three pyridyl rings of the tpy ligand that are nearly coplanar, as are the two rings of bpy. The anionic cyanamide group is coordinated end-on by the nitrile nitrogen to the Rh III . The Rh III –NCN bond is bent, having an angle of 125.4°. This bent bond is largely determined by the σ-bonding interaction of a cyanamide non-bonding electron pair in a sp 2 hybrid orbital.