Reference

New method for preparing cyclopentadienylthallium and cyclopentadienylindium during reaction of zero-valent thallium(0) and indium(0) with cyclopentadiene

New method for preparing cyclopentadienylthallium and cyclopentadienylindium during reaction of zero-valent thallium(0) and indium(0) with cyclopentadiene. Kuz'yants, G. M. (Inst. Elementoorg. Soedin., Moscow, USSR). Izv. Akad. Nauk SSSR, Ser. Khim., (8), 1895-6 (Russian) 1976. CODEN: IASKA6. 34822-89-4 and 34822-90-7 which are cas registry numbers of chemicals are mentioned. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) C5H5Tl and C5H5In were prepd. by cocondensation of Tl or In with cyclopentadiene (matrix) at 77.degree.K. .

Theoretical analysis of bonding in monomeric and polymeric C5H5M compounds

Theoretical analysis of bonding in monomeric and polymeric C5H5M compounds. Canadell, Enric; Eisenstein, Odile; Rubio, Jaime (Dep. Chem. 77220-40-7 and 34822-89-4 are also occured in this study., Univ. Michigan, Ann Arbor, MI 48109, USA). Organometallics, 3(5), 759-64 (English) 1984. CODEN: ORGND7. ISSN: 0276-7333. DOCUMENT TYPE: Journal CA Section: 29 (Organometallic and Organometalloidal Compounds) Section cross-reference(s): 22 The structures of monomeric C5H5M (M = In, Tl, Sn+) have been optimized with an SCF pseudopotential method with a double-z basis set. The results agree with expt. The influence of d orbitals on the Tl atom was negligible. The bonding between In or Tl and cyclopentadienyl has a large covalent component. The polymeric cyclopentadienylindium was analyzed by extended Hueckel tight binding calcns. The zig-zag structure of the polymer is due to a minimization of the repulsive factors. Polyhedral skeletal electron pair counting rules are also applied to this polymer to explain the zig-zag structure. Finally, other distortions in discrete systems are discussed in terms of electron count and MO pictures. .