ISSN:
0009-2940
Schlagwort(e):
Azadiboriridine, tri-tert-butyl-
;
Mercaptoborane
;
Thiaaza-arachno-pentaborane, 1,4,5-tri-tert-butyl-2-organo-
;
Chemistry
;
Inorganic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Thiaaza-arachno-pentaborane SNB3H2tBu3RThe azadiboriridine [-B(tBu)-N(tBu)-B(tBu)-] (1) gives 1:1 adducts with the mercaptoboranes BH2(SR), which can be generated from their cyclotrimers by the action of THF. The adduct 4a (R = Ph), a nido cluster with an NB3 skeleton, forms an equilibrium with an adduct 5a, an arachno cluster with an SNB3 skeleton, whose S-bound ligand Ph is found in an endo position by an X-ray structural analysis. The equilibrium 4a · 5a involves a Lewis acid-base reaction, which is electronically coupled to a reduction of a three-center to give a two-center π bond. The reaction of 1 with BH2(SPr) gives the corresponding arachno cluster 5b only.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/cber.19951281108
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