Electric Literature of 1608-26-0, Chemistry can be defined as the study of matter and the changes it undergoes. You’ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.1608-26-0, Name is Tris(dimethylamino)phosphine
, molecular formula is P[N(CH3)2]3. In a patent, introducing its new discovery.
Gas-phase basicities were determined in an ion cyclotron resonance spectrometer for 13 aliphatic organophosphorus compounds: OPX3 (X=Me, Et, n-Pr, i-Pr, OEt, NEt2, CH2NMe2); OPMe(3-x)(NMe2)x, x=1-3; OPNH2(NMe2)2; OPX(NMeCH2)2, X=Me or NMe2.The results are discussed by comparison with the corresponding P(III) derivatives and also in terms of the effects of substituents on basicity.A good correlation is observed between gas-phase basicities and the ?psi Kabachnik’s constants.Ab initio SCF calculations using four different basis sets were performed on the representative compounds OPX3 (X=H, Me, NH2) and OPMe2NMe2, and on their protonated analogues, so as to allow for a better interpretation of the experimental results.They lead to a reasonable description of the protonation process in these bases, indicating, for example, that O-protonation is favored over N-protonation by ca. 100 kcal/mol, an important result which is more clearly visualized in a molecular electrostatic potential map representation.
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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