which are described as BCN(H) and BC 3 N(H), have been prepared by the interaction of acetonitrile with boron trichloride in a hydrogen and nitrogen atmosphere and acrylonitrile with boron trichloride, respectively. X-ray and electron diffraction analyses indicate that these materials have hexagonal structures similar to that of graphite. ESCA spectra and the possible chemical bonds suggest that the ideal structure of BCN is made of the unit structure of BC 2 N + BN, while BC 3 N is composed of BC 3 N + BNC 3 . A BCN(H) plate has a basal-plane conductivity of 1.28 (Ω cm) -1 at room temperature, while a BC 3 N(H) plate has that of 88.5 (Ω cm) -1 . Thermoelectric measurements indicate that both materials behave as p-type semiconductors and a BCN(H) plate has a high Seebeck coefficient of 300 µV/°K at room temperature in air.

No abstract

No abstract

are prepared by gas phase reactions of MeCN and BCl3 in H2/N2 atmosphere and of acrylonitrile and BCl3 in N2, resp., and characterized by XRD, TEM, SEM, ESCA, electrical conductivity, and thermoelectric property measurements. The materials have a hexagonal graphite-like layered structure. The BCN(H) structure consists of BC2N + BN monomers that form a BCCNB unit structure while BC3N(H) has a unit structure of BCCCNBNCCC constituted by pairs of BC3N monomers. Both materials are p-type semiconductors. BCN(H) plates exhibit a large Seebeck coefficient (300 µV/K) at room temp. in air. -(KAWAGUCHI, M.; KAWASHIMA, T.; NAKAJIMA, T.; Chem.

No abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.