We examine theoretically the bonding and thermodynamic stability of a proposed class of tris(sandwich)benzene complexes with the general formula C(6)(RMR')(3). In these systems, a single central (benzene) ring is flanked by three distorted 18-electron sandwich fragments with M = Groups 6, 7, or 8 me
Theoretical studies of structure, stability, and chemical bonding in oxohydride OM4H6 complexes
✍ Scribed by E. A. Rykova; N. M. Klimenko; A. I. Grigoŕev
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 590 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
The results of ab initio R H F / ~-~~G , R H F / ~-~~G * , and ~r 2 / 6 -3 1 G * * / / H F / 6 -3 1 G * calculations for 10 possible configurations of OM,H, molecules (MO . 3MH,, M = Be, Mg) are reported. Five isomers of OBe,H, and three isomers of OMg,H, have been found within an energy range of -15 kcal mol-'. The "lanternlike" C,, structure is the most favorable one for both complexes. Both molecules OM,H, are stable to decomposition through all of the studied pathways. Chemical bonding in the OM, polyhedra containing two-, three-and four-coordinated oxygen atoms is discussed.
📜 SIMILAR VOLUMES
## Abstract ^13^C chemical shieldings and ^14^N and ^2^H electric field gradient (EFG) tensors of L‐alanylglycine (L‐alagly) dipeptide were calculated at RHF/6–31 + + G\*\* and B3LYP/6–31 + + G\*\* levels of theory respectively. For these calculations a crystal structure of this dipeptide obtained
## Abstract Compounds [{Au(pz)(PPh~3~)}~2~] (pz=3,5‐disubstituted pyrazolato; R=BuOC~6~H~4~ (bp), 1; R=C~8~H~17~OC~6~H~4~ (op), 2; R=C~6~H~13~OC~6~H~4~ (hp), 3) were easily obtained by reaction of [Au(NO~3~)(PPh~3~)] and the corresponding pyrazolato ligand. They exhibit similar NMR patterns, their