STRUCTURES OF THREO(RR,SS) DIETHYL ESTER OF 2-HYDROXY-1,2-DIPHENYLETHYLPHOSPHONIC ACID AND (+/-)DIETHYL ESTER OF (1-HYDROXYCYCLOPENTYL)(2-METHYLPHENYL)METHYLPHOSPHONIC ACID

被引：9

作者：

ANGELOVA, O ^{[1
]}

MACICEK, J ^{[1
]}

VASSILEV, NG ^{[1
]}

MOMCHILOVA, S ^{[1
]}

PETROVA, J ^{[1
]}

机构：

[1] UNIV SOFIA,DEPT CHEM,BU-1126 SOFIA,BULGARIA

来源：

JOURNAL OF CRYSTALLOGRAPHIC AND SPECTROSCOPIC RESEARCH | 1992年 / 22卷 / 03期

关键词：

D O I：

10.1007/BF01199525

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The crystal structures of threo(RR,SS) diethyl ester of 2-hydroxy-1,2-diphenylethylphosphonic acid (1) and of (+/-)diethyl ester of (1-hydroxycyclopentyl)(2-methylphenyl)methylphosphonic acid (2) have been solved by X-ray methods. They are built up in a similar way to centrosymmetric dimers of hydrogen-bonded molecules. The orientation of the substituents around the central C-C bond in both molecules fulfills the requirement for the least spatial hindrance. The observed shift of the nu(OH) stretching frequencies from 3312(1), 3346 (2) cm-1 in solid to 3408(1), 3450(2), in diluted (10(-3) M) tetrachloromethane solution, indicates the formation of intramolecular hydrogen-bonded species.

引用

页码：253 / 258

页数：6

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