About: Alumazene Adducts with Pyridines: Synthesis, Structure, and Stability Studies     Goto   Sponge   NotDistinct   Permalink

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  • Lewis acid-base adducts of the alumazene [2,6-(i-Pr)2C6H3NAlMe]3 (1) with pyridine (py) and 4-dimethylaminopyridine (dmap) were synthesized and structurally characterized: 1(py)2 (2), 1(py)3 (3), 1(dmap)2, (4), and 1(py)(dmap) (5). The bisadducts 2, 4, and 5 form the trans isomers. The trisadduct 3 exhibits an unexpected cis-cis isomer and can be prepared only in the presence of excess py. The planarity of the alumazene ring is lost upon coordination of the Lewis base molecules. A comparison of the Al-N(base) bond distances and pyramidality at Al suggests the higher basicity of dmap. NMR spectroscopy confirms stability to dissociation of the bisadducts in solution while the trisadduct 3 is labile and converts to 2. The thermodynamics of the adduct formation has been investigated experimentally and theoretically.
  • Lewis acid-base adducts of the alumazene [2,6-(i-Pr)2C6H3NAlMe]3 (1) with pyridine (py) and 4-dimethylaminopyridine (dmap) were synthesized and structurally characterized: 1(py)2 (2), 1(py)3 (3), 1(dmap)2, (4), and 1(py)(dmap) (5). The bisadducts 2, 4, and 5 form the trans isomers. The trisadduct 3 exhibits an unexpected cis-cis isomer and can be prepared only in the presence of excess py. The planarity of the alumazene ring is lost upon coordination of the Lewis base molecules. A comparison of the Al-N(base) bond distances and pyramidality at Al suggests the higher basicity of dmap. NMR spectroscopy confirms stability to dissociation of the bisadducts in solution while the trisadduct 3 is labile and converts to 2. The thermodynamics of the adduct formation has been investigated experimentally and theoretically. (en)
Title
  • Alumazene Adducts with Pyridines: Synthesis, Structure, and Stability Studies
  • Alumazene Adducts with Pyridines: Synthesis, Structure, and Stability Studies (en)
skos:prefLabel
  • Alumazene Adducts with Pyridines: Synthesis, Structure, and Stability Studies
  • Alumazene Adducts with Pyridines: Synthesis, Structure, and Stability Studies (en)
skos:notation
  • RIV/00216224:14310/07:00022391!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM0021622410)
http://linked.open...iv/cisloPeriodika
  • 14
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 409185
http://linked.open...ai/riv/idVysledku
  • RIV/00216224:14310/07:00022391
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Lewis acid-base; adducts; alumazene; pyridine (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [9DDE399FF45F]
http://linked.open...i/riv/nazevZdroje
  • INORGANIC CHEMISTRY
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 46
http://linked.open...iv/tvurceVysledku
  • Nečas, Marek
  • Pinkas, Jiří
  • Löbl, Jiří
  • Roesky, Herbert W.
  • Timoshkin, Alexey Y.
  • Trinh, Cong
http://linked.open...ain/vavai/riv/wos
  • 000247623000036
http://linked.open...n/vavai/riv/zamer
issn
  • 0020-1669
number of pages
http://localhost/t...ganizacniJednotka
  • 14310
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