Beryllium Phosphonitrilates

Evolution of structural features and mechanical properties during the conversion of poly[(methylamino)borazine] fibers into boron nitride fibers

“…They have been synthesized for various applications in several forms such as boron nitride (BN)-based bulk materials, matrices, thin films and coatings [25][26][27][28][29][30]. In the case of BN fibers, poly[(alkylamino)borazines] have proven to be the most attractive precursors [31][32][33][34].…”

A spirobicyclic complex of Schmidpeter's ligand, bis(tetraphenylimidodiphosphinato)beryllium, Be(OPh2PNPPh2O)2, an inorganic analog of beryllium bis(?-diketonates)

“…Bis(tetraphenylimidodiphosphinato)beryllium, Be-(OPh 2 PNPPh 2 O) 2 , was prepared by a modification of the published method [8], by refluxing beryllium acetylacetonate, Be(acac) 2 , with tetraphenylimidodiphosphinic acid, OPh 2 PNPPh 2 OH, in benzene. Alternatively, the compound was also obtained from beryllium(II) chloride in aqueous solution and the potassium salt of the ligand in ethanol.…”

“…The beryllium compound, Be(OPh 2 PNPPh 2 O) 2 , has been previously prepared from beryllium bis(acetylacetonate), Be(acac) 2 , and tetraphenylimidodiphosphinic acid, OPh 2 PNPPh 2 OH, at 110ЊC (without solvent) and a spirobicyclic structure 6, R ‫ס‬ Ph, has been suggested on the basis of analytical and spectroscopic evidence [8].…”

Bis(tetraphenylimidodiphosphinato)tin(II) and ‐tin(IV) Dihalides. Conversion of Pseudo Trigonal Bipyramidal to Octahedral Geometry

“…All computations were performed with a Microvax I1 computer using the Enraf-Nonius SDP system of programs. The maximum density on a final difference Fourier synthesis was 0.30 (5) and the ratio of observations to variables was 8.51. dependent non-hydrogen atoms were refined anisotropically. The 40 independent hydrogen atoms were treated as described for 3.…”