About: Phosphaborane chemistry. Syntheses and calculated molecular structures of mono- and di-chloro derivatives of 1,2-diphospha-closo-dodecaborane(10).     Goto   Sponge   NotDistinct   Permalink

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  • The reaction between nido-B10H14 and PCl3 in the presence of proton sponge (PS = 1,8-bis(dimethylamino) naphthalene) in CH2Cl2 yielded a mixture of icosahedral diphosphaboranes from which 1,2-closo-P2B10H10 (1a) and its mono- and di-chloro derivatives 3-Cl-1,2-closo-P2B10H9 (2a), 4-Cl-1,2-closo-P2B10H9 (2b), 3,6-Cl-2-1,2-closo-P2B10H8 (3a), and 3,4-Cl-2-1,2-closo-P2B10H8 (3b) were isolated together with 4-Cl(CH2)(4)O-1,2-closo-P2B10H10 4 via preparative HPLC. Individual compounds were characterized by NMR (H-1, B-11, P-31) spectroscopy and, except for 4, geometry optimised at the (RMP2(fc)) level with a 6-31G* basis set. The optimisation disclosed considerable distortions of the icosahedral cage as documented by the narrowing of the pentagonal B-P-B angles (ca. 93degrees) and the longer P-P separations (>2.31 Angstrom). In this context, the RMP2(fc)/6-31G* geometries of 1,7-closo-P2B10H10 (1b) and that of the non-isolated 4,5-Cl-2-1,2-closo-P2B10H8 isomer (3c) were also derived. The geometries were us
  • The reaction between nido-B10H14 and PCl3 in the presence of proton sponge (PS = 1,8-bis(dimethylamino) naphthalene) in CH2Cl2 yielded a mixture of icosahedral diphosphaboranes from which 1,2-closo-P2B10H10 (1a) and its mono- and di-chloro derivatives 3-Cl-1,2-closo-P2B10H9 (2a), 4-Cl-1,2-closo-P2B10H9 (2b), 3,6-Cl-2-1,2-closo-P2B10H8 (3a), and 3,4-Cl-2-1,2-closo-P2B10H8 (3b) were isolated together with 4-Cl(CH2)(4)O-1,2-closo-P2B10H10 4 via preparative HPLC. Individual compounds were characterized by NMR (H-1, B-11, P-31) spectroscopy and, except for 4, geometry optimised at the (RMP2(fc)) level with a 6-31G* basis set. The optimisation disclosed considerable distortions of the icosahedral cage as documented by the narrowing of the pentagonal B-P-B angles (ca. 93degrees) and the longer P-P separations (>2.31 Angstrom). In this context, the RMP2(fc)/6-31G* geometries of 1,7-closo-P2B10H10 (1b) and that of the non-isolated 4,5-Cl-2-1,2-closo-P2B10H8 isomer (3c) were also derived. The geometries were us (en)
Title
  • Phosphaborane chemistry. Syntheses and calculated molecular structures of mono- and di-chloro derivatives of 1,2-diphospha-closo-dodecaborane(10).
  • Phosphaborane chemistry. Syntheses and calculated molecular structures of mono- and di-chloro derivatives of 1,2-diphospha-closo-dodecaborane(10). (en)
skos:prefLabel
  • Phosphaborane chemistry. Syntheses and calculated molecular structures of mono- and di-chloro derivatives of 1,2-diphospha-closo-dodecaborane(10).
  • Phosphaborane chemistry. Syntheses and calculated molecular structures of mono- and di-chloro derivatives of 1,2-diphospha-closo-dodecaborane(10). (en)
skos:notation
  • RIV/61388980:_____/02:50023048!RIV/2003/GA0/A50003/N
http://linked.open.../vavai/riv/strany
  • 2954;2959
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA203/00/1042), P(GA203/99/M037), P(LN00A028), Z(AV0Z4032918), Z(MSM 113100001)
http://linked.open...iv/cisloPeriodika
  • 15
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
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http://linked.open...dnocenehoVysledku
  • 658170
http://linked.open...ai/riv/idVysledku
  • RIV/61388980:_____/02:50023048
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • crystal-structure; phosphacarborane chemistry; polyhedral phosphaboranes (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [DA2D4736D755]
http://linked.open...i/riv/nazevZdroje
  • Journal of the Chemical Society ,Dalton Transactions
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...nichUcastnikuAkce
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • N/A
http://linked.open...iv/tvurceVysledku
  • Císařová, I.
  • Grüner, Bohumír
  • Štíbr, Bohumil
  • Plzák, Zbyněk
  • Hnyk, Drahomír
http://linked.open...n/vavai/riv/zamer
issn
  • 1472-7773
number of pages
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