Chlorinated Hypoelectronic Dimetallaborane Clusters: Synthesis, Characterization, and Electronic Structures of (eta(5)-C5Me5W)(2)B5HnClm (n=7, m=2 and n=8, m=1)


Autoria(s): Sahoo, Satyanarayan; Reddy, Hari Krishna K; Dhayal, Rajendra S; Mobin, Shaikh M; Ramkumar, V; Jemmis, ED; Ghosh, Sundargopal
Data(s)

01/07/2009

Resumo

Pyrolysis of (eta(5)-C5Me5WH3)B4H8, 1, in the presence of excess BHCl2 center dot SMe2 in toluene at 100 degrees C led to the isolation of (eta(5)-C5Me5W)(2)B5H9, 2, and B-Cl inserted (eta(5)-C5Me5W)(2)B5H8Cl, 3, and (eta(5)-C5Me5W)(2)B5H7Cl2, (four isomers). All the Chlorinated tungstaboranes were isolated as red and air and moisture sensitive solids. These new compounds have been characterized in solution by H-1, B-11, C-13 NMR, and the structural types were unequivocally established by crystallographic analysis of compounds 3, 4, and 7. Density functional theory (DFT) calculations were carded out on the model molecules of 3-7 to elucidate the actual electronic structures of these chlorinated species. On grounds of DFT calculations we demonstrated the role of transition metals, bridging hydrogens, and the effect of electrophilic substitution of hydrogens at B-H vertices of metallaborane structures.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/22080/1/ic900467d.pdf

Sahoo, Satyanarayan and Reddy, Hari Krishna K and Dhayal, Rajendra S and Mobin, Shaikh M and Ramkumar, V and Jemmis, ED and Ghosh, Sundargopal (2009) Chlorinated Hypoelectronic Dimetallaborane Clusters: Synthesis, Characterization, and Electronic Structures of (eta(5)-C5Me5W)(2)B5HnClm (n=7, m=2 and n=8, m=1). In: Inorganic Chemistry, 48 (14). pp. 6509-6516.

Publicador

American Chemical Society

Relação

http://pubs.acs.org/doi/abs/10.1021/ic900467d

http://eprints.iisc.ernet.in/22080/

Palavras-Chave #Inorganic & Physical Chemistry
Tipo

Journal Article

PeerReviewed