Synthesis of new dithiacobaltaborane clusters derived from arachno-6,8-S/sub 2/B/sub 7/H/sub 9/

Journal Article · Wed Oct 19 04:00:00 EDT 1988 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic00294a020· OSTI ID:5637502

Kang, S O; Sneddon, L G

A series of air-stable dithiacobaltaborane clusters has been isolated from either the reaction of the arachno-S/sub 2/B/sub 7/H/sub 8//sup -/ anion with cobalt chloride and pentamethylcyclopentadienide or the reaction of neutral arachno-6,8-S/sub 2/B/sub 7/H/sub 9/ with cobalt atoms and pentamethylcyclopentadiene. Thus, the reaction of arachno-S/sub 2/B/sub 7/H/sub 8//sup -/ with CoCl/sub 2/ and C/sub 5/(CH/sub 3/)/sub 5//sup -/ in THF gave, as the major products, the triple-decker compound nido-4,6-/eta/-C/sub 5/(CH/sub 3/)/sub 5//sub 2/Co/sub 2/-3,5-S/sub 2/B/sub 2/H/sub 2/ (I) and the 11-vertex cluster nido-8,10(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co/sub 2/-7,9-S/sub 2/B/sub 7/H/sub 7/ (III). Also isolated in smaller amounts were a chloride derivative of I, nido-1-Cl-4,6-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co/sub 2/-3,5-S/sub 2/B/sub 2/H (II), two isomers of III, nido-3,10-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co/sub 2/-7,9-S/sub 2/B/sub 7/H/sub 7/ (IV) and nido-3,5-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co/sub 2/-7,9-S/sub 2/B/sub 7/H/sub 7/ (V), and the eight-boron cluster nido-8-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)Co-7,9-S/sub 2/B/sub 8/H/sub 8/ (VI). Other trace products of the reaction included the six-boron clusters nido-5,8-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co/sub 2/-6,9-S/sub 2/B/sub 6/H/sub 6/ (VII) and arachno-7-(/eta/-C/sub 5/(CH/sub 3/)/sub 5/)Co-6,8-S/sub 2/B/sub 6/H/sub 8/ (VIII). Compound III was found to isomerize at 250/degree/C to IV, which could then be converted to V at 300/degree/C. The reaction of cobalt atoms with arachno-6,8-S/sub 2/B/sub 7/H/sub 9/ in the presence of pentamethylcyclopentadiene gave VIII as the major product; however, a number of other clusters including I, V, VI, and ((/eta/-C/sub 5/(CH/sub 3/)/sub 5/)/sub 2/Co)/sup +/((SB/sub 10/H/sub 10/)/sub 2/Co)/sup -/ were isolated in trace amounts. 16 references, 6 figures, 3 tables.

• Research Organization: Univ. of Pennsylvania, Philadelphia (USA)
• OSTI ID: 5637502
• Journal Information: Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:21; ISSN INOCA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
BORANES
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
COBALT COMPLEXES
COMPLEXES
DATA
EXPERIMENTAL DATA
INFORMATION
ISOTOPES
LIGHT NUCLEI
NMR SPECTRA
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
SPECTRA
STABLE ISOTOPES
SULFUR COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES