Boron-nitrogen adducts of 1,3,5-triaza-7-phosphaadamantane (PTA): Synthesis, reactivity, and molecular structure

Addition of BH(3) to 1,3,5-triaza-7-phosphaadamantane (PTA) leads to the formation of the first coordination complex of PTA in which a nitrogen and not the phosphorus of PTA is involved in the bonding. Multinuclear NMR spectroscopy, Xray crystallography, and computational chemistry are utilized in the characterization of the products. Crystal structures of PTA-BH(3) (1) and O=PTA-BH(3) (2) adducts are described. In addition a coordination polymer, [CpRu(PTA)(2)Cl(Ph(3)B(3)O(3))](n) (3), resulting from Lewis acid-base adduct formation between the PTA hgands of CpRu(PTA)(2)Cl and the product of the cyclocondensation of phenylboronic acid is described. The polymeric compound 3 was also characterized by X-ray crystallography. ((c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)