Coordination numbers amides

As exemplified by the complex [Sr N(SiMe3)2 2(dme)2], a coordination number of six rather than four is often observed in monomeric strontium amides because of the relatively... 

The literature is most prolific on neutral An amides, but neutral U and amides are also well documented. There are only few publications on amides,one being on three alkali metal amidouranate(VI)s. ° There is a paper on a compound (18) which couid be classified as of U° and two on mixed valence U /U amides (see Section 5.4 for these types). There are a number of articles on monocationic amidol/ tetraphenylborates, three on dicationic analogues, three on a cationic U salt and four on alkali metal amidoactinate(IV)s and three on corresponding U salts. For crystalline uranium amides containing only monodentate ct-bonded ligands, metal coordination numbers of 3-7 are... 

Higher metal coordination numbers are also observed in the distorted square pyramidal indium(lll) amides [MeIn N(Me)(2-py) 2]2 ° and [MeIn 2-(N(CH2Ph)aj de(2-py) 2] in which the bidentate ligands occupy equatorial positions (mean In—N bond lengths are... 

This section is dominated by dialkyl- and disilyl-amide ligands, which, because of steric factors, constrain chromium(III) to the unusual coordination numbers of three or four. 

The transition metal amides constitute an extensive series of compounds with widely varying coordination numbers (37, 38). These factors, coupled with... 

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