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Tetramesityl Transition Element Complexes: Photoelectron spectroscopic characterization of the electronic structure of the molybdenum(IV) and (V) derivatives
Author(s) -
Cauletti C.,
Zai R.,
Seidel W.
Publication year - 1983
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.19834960115
Subject(s) - molybdenum , chemistry , crystallography , electronic structure , transition metal , x ray photoelectron spectroscopy , inorganic chemistry , computational chemistry , nuclear magnetic resonance , organic chemistry , physics , catalysis
The d 2 configuration of Mo in MoMes 4 (Mes = 2,4,6‐(CH 3 ) 3 C 6 H 2 ) is characterized by gas‐phase UP and solid‐state XP spectroscopic measurements giving evidence for a static splitting related to the typical D 2d distortion of pseudotetrahedral tetra‐σ‐carbon bonded transition elements, and the consequent σ and π bond effects. Bond energies of ca. 6.4 eV (av.) and 229.7 eV are reported for MoMes 4 , respectively for 4d and 3d 5/2 , in the range normaly observed for Mo IV compounds, whereas [Mo V Mes 4 ] + I 3 − has a considerable high‐energy shift on the 3d 5/2 signal, to 232.0 eV, possibly related to weak Madelung interactions in the solid‐state structure.