Acidic Phosphorus Esters, Synthesis and Structure-Reactivity Studies as Ligands

袁承业,; 李树森,; 龙海燕,

doi:10.1080/03086648308076031

Phosphorus and Sulfur and the Related Elements

1983

DOI: 10.1080/03086648308076031

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Acidic Phosphorus Esters, Synthesis and Structure-Reactivity Studies as Ligands

袁承业袁承业

李树森李树森

龙海燕龙海燕

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Cited by 7 publications

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Studies on organophosphorus compounds 52. Structure‐reactivity studies of organophosphorus compounds by MNDO calculations

Yuan

1992

Chin. J. Chem.

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MNDO and MM2 (85) methods were used to study the conformation and the structure‐reactivity relationship of neutral and acidic phosphorus esters. The calculation results indicate that for the most stable conformation, the charge density of phosphoryl oxygen (qo) is determined not only by the electronegativity of the substituents, but also by the conformation of the alkoxyl groups on the phosphorus atom. Meanwhile, the conformation of the alkoxyl group provides, as a rule, more important influence on the charge density of the phosphoryl oxygen. However, the energy of the highest occupied molecular orbital (EHOMO) is basically dependent on the eletronegativity of the substituents, while the donating ability or the withdrawing ability of the neutral phosphorus compounds is mainly governed by the EHOMO but not the qO. This is also true for other kinds of the neutral oxygen‐containing compounds.

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Studies on organophosphorus compounds 52. Structure‐reactivity studies of organophosphorus compounds by MNDO calculations

Yuan

1992

Chin. J. Chem.

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The effect of phenoxy oxygen atoms on extremely high extraction ability and less separation efficiency of trivalent rare earth elements with tetraphosphonic acid derivative of calix[4]arene

Ohto

Takedomi

Chetry

et al. 2012

J Incl Phenom Macrocycl Chem

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New (α-Hydroxyalkyl)phosphorus Amphiphiles: Synthesis and Dissociation Constants

et al. 1998

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Direct synthesis of free (alpha-hydroxyalkyl)phosphinic acid amphiphiles 1 can be readily realized by sonication of the heterogeneous mixture of 50% aqueous hypophosphorous acid and long-chain aldehydes in the presence of catalytic amounts of hydrochloric acid. Oxidation of these phosphinic acids by DMSO in the presence of catalytic amounts of iodine quantitatively leads to the corresponding phosphonic acids 3. IR spectra of the phosphinic acids 1 in the condensed phase and in solution reveal the presence of intra- and intermolecular associations. Dissociation constants of the phosphorus acids 1 and 3 determined by potentiometric and (31)P NMR titrations show a good correlation between the two methods. The phosphinic acid amphiphiles 1 are slightly stronger than the corresponding phosphonic acids 3. (alpha-Hydroxyalkyl)phosphonium chlorides are prepared in good yields from the phosphine PH(3) and long-chain aldehydes in acidic media.

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Acidic Phosphorus Esters, Synthesis and Structure-Reactivity Studies as Ligands

Cited by 7 publications

References 0 publications

Studies on organophosphorus compounds 52. Structure‐reactivity studies of organophosphorus compounds by MNDO calculations

Studies on organophosphorus compounds 52. Structure‐reactivity studies of organophosphorus compounds by MNDO calculations

The effect of phenoxy oxygen atoms on extremely high extraction ability and less separation efficiency of trivalent rare earth elements with tetraphosphonic acid derivative of calix[4]arene

New (α-Hydroxyalkyl)phosphorus Amphiphiles: Synthesis and Dissociation Constants

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