The Conversion of Smaller Borane Fragments to Larger Structures. Systematics of Boron Hydride Reactions
Abstract
The borane framework expansion reaction by the use of B2H4.2P (CH3)3, was developed to be a more general type of reaction. The B2H4 adducts containing Lewis bases other than P (CH3)3 were tested for the expansion reaction or used to interpret formations of higher borane compounds. The formation of B5H11.PH2(- ) from B4H8.PH3 and NaBH4 is cited as a case of new in-situ BH3 addition to borane species. A further insight into the formation of the B2H4 adducts from the B3H7 adduct was obtained. The treatment of B3H7.S(CH3)2 with N(CH3)3 in CH2Cl2 at -80 C resulted in the immediate formation of B2H4.2N(CH3)3, suggesting that the same type of reaction might be advantageously used to prepare thermally unstable B2H4 adducts. The number of homolog series of polyboron complex cations has now been increased to five. Similarities and differences in reactivities between these cationic species and the corresponding isoelectronic, neutral borane species have been encountered. Preparation of polyboron complex cations containing SR2 was intended. The B3H6-2S(CH3)(2+) cation was tentatively identified. Keywords: Tioether-triborane, Fluxion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 1988
- Accession Number
- ADA197068
Entities
People
- Goji Kodama
- Robert W. Parry
Organizations
- University of Utah