Several closo-hydroborates bearing phosphite oxide, phosphine oxide or CMPO (carbamoylmethylphosphine oxide) groups, Cs[(Ph2P(O))(2)N(H)B12H11] (1), K[Ph2P(O)CH2C(O)N(H)(2)B12H11] (2), Na[Bz(2)N(H)B12H10OCH2CH2OCH2CH2P(O)(OBu)(2)] (5), Na[Bz(2)N(H)B12H10O(CH2)(4)N(R)C(O)CH2P(O)(Ph)(2)] (9, R=Pr-i; 10, R= Octyl), Na[Bz(2)N(H)B12H10OCH2CH2OCH2CH2N(Bu-i)C(O)CH2P(O)(Ph)(2)](-) (11) were synthesised employing novel neutral bipolar intermediates [Bz(2)N(H)B12H10O(CH2)(4)] (3) and [Bz(2)N(H)B12H10O(CH2CH2)(2)O] (4) as useful synthons. All new compounds were characterised by NMR spectroscopy and mass spectrometry techniques. Their abilities to extract selectively the radionuclides Am-241 and Eu-152 from nuclear waste solutions were investigated using a liquid-liquid extraction technique. Promising results were obtained with compound 10, which exhibits enhanced hydrophobicity and solubility in organic extraction solvent. (C) 2002 Elsevier Science B.V. All rights reserved.
Study of thermochemical properties of diphenyl[dialkyl(alkyl)carbamoylmethyl]phosphine oxides
作者:B. I. Petrov、G. A. Abakumov、A. V. Arapova、E. V. Sharova、O. I. Artiushin、I. L. Odinets、N. M. Lazarev、Yu. A. Bessonova
DOI:10.1134/s107036321111003x
日期:2011.11
The synthesis and the studies of properties of diphenyl[dialkyl(alkyl)carbamoylmethyl]phosphine oxides by differential scanning calorimetry, mass spectrometry and Knudsen effusion method were performed. The thermodynamic parameters of melting and vaporization were calculated.