Amino-substitutedgem-diphosphonic acids: Dissociation mechanism and the structure of species in aqueous solutions
作者:A. G. Matveeva、M. P. Pasechnik、P. V. Petrovskii、S. V. Matveev、S. A. Pisareva
DOI:10.1007/bf02494893
日期:2000.6
The mechanism of dissociation of amino-substitutedgem-diphosphonic acids R2N(CH2)nCR'(PO3H2)2 with different lengths of the alkylidene chain and different substituents at the N atom was studied by vibrational (IR, Raman) and NMR (1H,14N,31P) spectroscopy using data of conformational analysis (molecular mechanical) data. The important role of intramolecular H-bonds and cyclic solvates for the stabilization
通过振动(IR,Raman)和NMR(1H,14N)研究了具有不同亚烷基链长度和不同N原子取代基的氨基取代的宝石-二膦酸R2N(CH2)nCR'(PO3H2)2的解离机理,31P) 光谱使用构象分析(分子力学)数据。证明了分子内 H 键和环状溶剂化物在稳定各种构象和互变异构形式的离子方面的重要作用。发现了允许将宝石-二膦酸酯基团视为单个酸性中心的光谱数据。