期刊
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS
卷 228, 期 7, 页码 311-317出版社
WALTER DE GRUYTER GMBH
DOI: 10.1524/zkri.2013.1605
关键词
Metal-ligand bonds; Bond strength; Bond length; MOF; Coordination compounds
资金
- IUPAC
- Swedish Chemical Society
- Swedish Research Council
Structure data on metal-alkoxides, metal-alcohol, metal-carboxylates, metal-carboxylic acid, metal-azolate and metal-azole coordination compounds from the Cambridge Structural Database (CSD) were analysed in terms of bond lengths. In general the anionic ligands form shorter metal-ligand bonds by about 0.02-0.05 angstrom compared to neutral ligands, a clear indication of a charge contribution to the bonding interactions. This small difference is not, however, deemed as sufficient to generate two distinct classes of metal-ligand bonding. Instead, the anionic ligands can be viewed as having charge assisted metal-ligand bonding, corresponding to the same term used for charge-assisted hydrogen bonding.
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