ChemInform Abstract: Redox Reactions with Iodoboranes. Part 18. Synthesis and Properties of 1,4‐Diboracyclohex‐2‐ene Derivatives.

Abstract

1991 organo-boron compounds, nonmetal heterocycles organo-boron compounds, nonmetal heterocycles S 0047 15 -210 Redox Reactions with Iodoboranes. Part 18. Synthesis and Properties of 1,4-Diboracyclohex-2-ene Derivatives. -The title compounds (V) are prepared and their electrochemical properties as well as the ESR parameters of their anions are reported. The X-ray structures of the 16 valence electron complexes (VIa) ( modification 1: space group P21/c, Z = 4; modification 2: P1, Z = 4) and (VIb) (Pbnm, Z = 4) are determined. -(UHM, J.-K.; HU, D.; ZENNECK, U.; PRITZKOW, H.; SIEBERT, W.; Taehan

Syntheses and Characterization of o‐Carboranes Containing Fused exo‐Polyhedral Di‐ and Triboraheterocycles

“…In the EI‐MS spectrum the molecular ion is detected with a correct isotopic pattern. A number of boron heterocycles with the 1, 4‐C 4 B 2 framework have been reported, which are mostly planar derivatives of 1, 4‐diboracyclohexadiene,15 of benzo‐1, 4‐diboracyclohexadiene16 and of 1, 4‐diboracyclohexene 17. In 3 the C 4 B 2 ring is folded along the B ··· B line due to strong B=N bonding, which causes steric crowding of the diisopropylamino groups in a planar environment (see below).…”