ISSN:
0009-2940
Keywords:
1,3-Dihydro-1,3-diborafulvenes
;
4,5-Dimethylidene-1,3-diborolanes
;
Hydroboration
;
nido-2,3,5-Tricarbahexaboranes
;
Metal complexes
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Syntheses, Reactivity and Complexation Properties of nido-2,3,5-TricarbahexaboranesBy double hydroboration of 1,3-dihydro-1,3-diborafulvenes 2 or 4,5-diisopropylidene-1,3-diborolanes 3 with (Et2BH)2 and subsequent loss of triethylborane derivatives 1 of 2,3,5-tricarbahexaborane are formed under mild conditions. The stability of the nido-carboranes 1 depends on the substituents in the basal positions. After deprotonation, the tricarbahexaboranate ion (1 - H) - functions as a cyclopentadienyl analogue (C5H5) - , and its reaction with allylnickel bromide dimer gives the allylnickel complexes 8a, b. Reaction of octacarbonyl dicobalt with 1b yields the dicarbonylcobalt complex 10b. Treatment of 1e with [(C5H5)Ni(CO)]2 results in the formation of the di-nuclear carbonyl-bridged complex 12e.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931261007
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