Tricarbaboranes

8

The chemistry of the eleven vertex nido -tricarbollides, in contrast to that of the dicarbollides is very small. It was as late as in 1995 when the first representatives of this family were reported by the collaborative work of this and the Czech group. There are two synthetic routes leading to tricarbollide compounds: cyanide and isonitrile methods giving respectively: [7-NH2-7,8,9-C3B8H10] and [7-tBuNH-7,8,9-C3B8H10].

clip_image002

 

 
However in contrast to the smooth complexation C2B3 open face in the dicarbollide series, the tricarbollide C3B2 face can  only be complexed by forcing conditions. This phenomenon is in all cases associated with an extensive rearrangement of the three cluster carbons over the cluster area to form tricarbollide complexes of extreme stability in air.
 

Projectes:

SAB94-0067: “Cluster degradation and expansion reactions in the chemistry of exo macrocyclic dicarbaboranes”.
Programa Cátedra Fundación BBV.
1996SGR 00038 para los grupos de investigación consolidados de Catalunya (concedida por la Resolución de 8 de Noviembre de 1996, DOGC nº 2283 de 20.11.1996).

“Tricarbollides-Compounds of the Eleven-vertex Series of Tricarbaboranes”.
Journal of Chemical Society, Chemical Communications, 795, (1995).
B. Stibr, J. Holub, F. Teixidor and C. Viñas.

“The 7,8,9- Series of Tricarbollides. Preparation and Structural Characterization of the Eleven-Vertex Tricarbaboranes 7-L-nido-7,8,9-C3B8H10 where L= amines)”.
Inorganic Chemistry, 35, 12, 3635, (1996).
B. Stibr, J. Holub, I. Cisarova, F. Teixidor, C. Viñas, J. Fusek and Z. Plzak.

“Proposed Mechanism for the Isomeritzation of the First Tricarbollide, nido-7,8,9-C3B8H11, to nido-7,8,10-C3B8H11“.
New Journal of Chemistry, 20, 277, (1996).
R. Rousseau, S. Lee, E. Canadell, F. Teixidor, C. Viñas and B. Stibr.

“Parent Tricarbollides [nido-7,8,9-C3B8H11], nido-7,8,9-C3B8H12, [nido-7,8,10-C3B8H11], and their Derivatives”.
Journal of the American Chemical Society, 119, 7750 – 7759, (1997).
J. Holub, B. Stibr, D. Hnyk, J. Fusek, I. Cisarova, F. Teixidor, C. Viñas, Z. Plzak and P.v.R. Schleyer.

“An Unusual 9 10 Rearrangement of the substituted cage carbon in the [2-(η5-C5H5)-9-X-closo-2,1,7,9-FeC3B8H10] Ferratricarbollides. Synthesis of the isomeric complexes [2-(η5-C5H5)-9-X-closo-2,1,7,10-FeC3B8H10] (where X = H2N, MeHN, Me2N, ButHN, and But(Me)N“.
Inorganic Chemistry, 39, 12, 2577, (2000).
B. Grüner, A. Lehtonen, R. Kivekäs, R. Sillanpää, J. Holub, F. Teixidor, C. Viñas and B. Stibr.

“Diferratricarbaboranes of the subcloso [(η5-C5H5)2Fe2C3B8H11] type, the first representatives of the 13 vertex dimetallatricarbaborane series”.
Chemistry A European Journal, 9, 6115, (2003) .B . Grüner, B. Štíbr, R. Kivekäs, R. Sillanpää , F. Teixidor and C. Viñas.

“Metallatricarbollides ligands-analogues of [η5-C5H5]“.
Contemporary Boron Chemistry, ISBN 0-85404-835-9 (pàgs. 337-344), The Royal Society of Chemistry, Londres 2000.
B. Stibr, G. Grüner, J. Holub, F. Teixidor, C. Viñas, A. Lehtonen, R. Sillanpää, R. Kivekäs.

This entry was posted in Former Research. Bookmark the permalink.