Synthesis and crystal structure of 1,2-bis(phthalimidomethyl)-1,2-dicarba-closo-dodecaborane(12): a precursor to polyamines

The reaction of 1 equivalent of the dilithium salt of the [closo-1,2-C2B10H10]2− dianion with two equivalents of N-(bromomethyl)phthalimide, in a mixture of anhydrous benzene and diethyl ether, produced a new bis-C(cage)-substituted o-carborane, 1,2-bis(phthalimidomethyl)-1,2-dicarba-closo-dodecaborane(12) (1) in 65% yield.