Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 1608-26-0, Name is Tris(dimethylamino)phosphine
, Computed Properties of P[N(CH3)2]3.
Twenty-one triorganophosphorus dibromide compounds, R3PBr2 (R3 = substituted aryl, mixed aryl-alkyl, triaryl or trialkyl) have been synthesized from diethyl ether solution and characterised by analytical and 31P-{H} NMR data in CDCl3 solution, the vast majority being reported for the first time. All but one of the compounds are ionic, [R3PBr]Br in CDCl3 solution, in keeping with analogous species containing iodine or chlorine, [R3PX]X (X = I or Cl) according to 31P-{H} NMR studies. In contrast, (C6F5)3PBr2 has a molecular five-co-ordinate trigonal bipyramidal structure both in CDCl3 solution and in the solid state. The single crystal structure of this compound has been determined and it represents the only reported R3PBr2 species which contains a five-co-ordinate phosphorus atom. It has D3 symmetry and perfect trigonal bipyramidal geometry. Why (C6F5)3PBr2 is the only R3PBr2 compound which adopts trigonal bipyramidal geometry is reasoned to be due to the very low basicity of the parent tertiary phosphine, which favours this geometry for the dihalogen adducts, a phenomenon previously observed for dichlorine adducts of tertiary phosphines and dihalogen adducts of tertiary arsines. The crystal structure of the first non-solvated trialkyl-phosphine dibromide compound, Et3PBr2, has also been determined and contains a tertrahedral phosphorus atom, exhibiting a long Br … Br contact, 3.303(2) A, and is probably better described as ionic, [Et3PBr]Br, with significant cation-anion interaction.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Computed Properties of P[N(CH3)2]3. In my other articles, you can also check out more blogs about 1608-26-0
Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate