A lithium-boron complex, lithium tetra (2-methyl 8-hydroxy quinolinato) boron (LiBqm4), which emits greenish-blue light has been synthesized by the reaction of LiBH4 with 2-methyl 8-hydroxyquinoline in a molecular weight ratio of 1:4, and used for organic light emitting diodes (OLEDs) fabrication. The complex has been characterized by optical absorption, Fourier Transform Infrared (FTIR), photo...

A series of homo- and hetero-tri(aryl)boranes incorporating pentafluorophenyl, 3,5-bis(trifluoromethyl)phenyl, and pentachlorophenyl groups, four of which are novel species, have been studied as the acidic component of frustrated Lewis pairs for the heterolytic cleavage of H2. Under mild conditions eight of these will cleave H2; the rate of cleavage depending on both the electrophilicity of the...

Three structural isomers of tris{bis(trifluoromethyl)phenyl}borane have been studied as the acidic component of frustrated Lewis pairs. While the 3,5-substituted isomer is already known to heterolytically cleave H2 to generate a bridging-hydride; ortho-substituents in the 2,4- and 2,5-isomers quench such reactivity through electron donation into the vacant boron pz orbital and steric blocking o...

The title compound, C(16)H(12)BClN(2), is one in a series of diaza-borinanes, derived from 1,8-diaminona-phthalene, featuring substitution at the 1, 2 and 3 positions in the nitro-gen-boron heterocycle. The structure deviates from planarity, the torsion angle subtended by the p-chloro-phenyl ring relative to the nitro-gen-boron heterocycle being -44-.3(3)°. The mol-ecules form infinite chains w...

The transition-metal-free hydroboration of various alkenes with pinacolborane (HBpin) initiated by tris[3,5-bis(trifluoromethyl)phenyl]borane (BArF3 ) is reported. The choice of the boron Lewis acid is crucial as the more prominent boron Lewis acid tris(pentafluorophenyl)borane (B(C6 F5 )3 ) is reluctant to react. Unlike B(C6 F5 )3 , BArF3 is found to engage in substituent redistribution with H...

The synthesis of light-harvesting arrays requires modular pigment building blocks. Boron-dipyrromethene dyes are well-suited for the photochemical sensitization of free base or metalloporphyrins. Direct access to borondipyrromethene dyes bearing reactive substituents is provided by a simple synthetic route involving two one-flask reactions. Reaction of pyrrole or 2-methylpyrrole with an aldehyd...