CRYSTAL-STRUCTURE OF BIS(BETAINE) HYDROCHLORIDE MONOHYDRATE

被引：49
|
作者：
CHEN, XM [1 ]
MAK, TCW [1 ]
机构：
[1] CHINESE UNIV HONG KONG,DEPT CHEM,SHA TIN,HONG KONG
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1990年 / 240卷
关键词：
D O I：
10.1016/0022-2860(90)80497-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Bis(betaine) hydrochloride monohydrate, 2Me3NCH2COO·HCI·H2O, crystallizes in space group Pnma (No. 62), with a=11.904(1), b=22.454(5), c=5.624(1) Å, and Z=4. The structure has been refined to RinF=0.046 for 863 observed (|Fo||>6σ|Fo|) Mo Kα data. the carboxylate groups of a pair of betaine molecules are bridged by a proton to form a centrosymmetric dimer featuring a very strong hydrogen bond of length 2.454(4) Å. The crystal structure comprises a packing of such [(Me3NCH2COO)2H]+ moieties and hydrogen-bonded (Cl-·H2O)∞ zigzag chains running parallel to the c axis. © 1990.
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页码：69 / 75
页数：7
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