THEORETICAL INVESTIGATION OF THE ELECTRONIC-STRUCTURES OF MIXED-RING SANDWICH MOLECULES [M(ETA(7)-C7H7)(ETA(5)-C5H5)] (M=TI, V, NB OR TA).
J CHEM SOC DALTON
3727 - 3730.
Density-functional methods have been used to investigate the valence electronic structures of four mixed-ring transition-metal sandwich molecules, [M(eta(7)-C7H7)(eta(5)-C5H5)] (M = Ti, V, Nb or Ta). Close agreement with previous experimental data is obtained in all cases for the ionisation energies and localisation properties of the highest occupied molecular orbitals. The metal-cyclopentadienyl ring bonding is predominantly ionic, while the interaction of the metal with the cycloheptatrienyl ring is found to have a significant covalent component. Analysis of the composition of the highest occupied molecular orbital corresponding to the metal-cycloheptatrienyl ring bonding of [Ti(eta(7)-C7H7)(eta(5)-C5H5)], for which experimental data are not available, suggests that it is not appreciably different from that in the Group 5 molecules.
|Title:||THEORETICAL INVESTIGATION OF THE ELECTRONIC-STRUCTURES OF MIXED-RING SANDWICH MOLECULES [M(ETA(7)-C7H7)(ETA(5)-C5H5)] (M=TI, V, NB OR TA)|
|Keywords:||CORRELATION ENERGIES, DENSITY|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
Archive Staff Only