| 释义 |
nephelauxetic, a. Physical Chem.|nɛfəlɔːkˈsɛtɪk|
[f. Gr. νεϕέλ-η cloud + αὐξητικ-ός auxetic a.]
Causing an expansion of the d-electron cloud of a central atom, i.e. a decrease in the inter-electron repulsion parameter; nephelauxetic series, a series of ligands arranged in order of their nephelauxetic effects.
1958Schäffer & Jørgensen in Jrnl. Inorg. & Nuclear Chem. VIII. 147 We shall propose to call this series the nephelauxetic (cloud expanding) series, as it corresponds to a development of the d shell in the region of the ligands. The neo-greek word was constructed by Professor Kaj Barr from the University of Copenhagen. 1965Molecular Physics X. 7 The red shift of the ligand field bands in metal complexes with respect to the free ions has been explained..as being due to the nephelauxetic effect. 1966Phillips & Williams Inorg. Chem. II. xxviii. 402 The nephelauxetic (cloud-expanding) series.., it is suggested, represents the spread of the electron away from its parent nucleus on increase of covalent character in the binding of a given cation. 1973Chem. Soc. Rev. II. 177 The cis-influence of ligands increases in accordance with their position in the nephelauxetic series. |