Dominance of Charge-Assisted Hydrogen Bonding on Short Contacts and Structures that Crystallize with Z′ > 1

被引：16
作者：
Anderson, Kirsty M. [1 ]
Goeta, Andres E. [1 ]
Martin, Jessica E. [1 ]
Mason, Sax A. [2 ]
McIntyre, Garry J. [1 ,2 ]
Sansam, Benedict C. R. [1 ]
Wilkinson, Clive [1 ]
Steed, Jonathan W. [1 ]
机构：
[1] Univ Durham, Dept Chem, Durham DH1 3LE, England
[2] Inst Laue Langevin, F-38042 Grenoble, France
来源：
CRYSTAL GROWTH & DESIGN | 2011年 / 11卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
DOT-O INTERACTIONS; POLYNUCLEAR AROMATIC-HYDROCARBONS; SYMMETRY-INDEPENDENT MOLECULES; ASYMMETRIC UNIT; MULTIPLE MOLECULES; CO-CRYSTAL; Z'-GREATER-THAN-1; COMPRESSION; DIFFRACTION; PREDICTION;
D O I：
10.1021/cg200751m
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An enantiotropic pair of polyrnorphs of (H-2-o-PDA(2+))(4)(H5O2+)(SO42)(4)(HSO4-)center dot 2H(2)O (1) interconvert at 140-142 K with a concomitant change in Z'. The details of the structural change are studied by single-crystal X-ray and neutron diffraction which shows that both forms are close packed with the difference resulting from the linearization of hydrogen bonds at low temperature as part of an extensive charge-assisted hydrogen-bonding network. The related (H-2-o-PDA(2+))(2)(SO42-)(2)center dot 3H(2)O (2) has also been characterized by single-crystal neutron diffraction and exhibits a disordered "flip-flop" water chain and short nonbonded O center dot center dot center dot O contacts enforced by NH3+center dot center dot center dot OSO32- hydrogen-bonded bridges. A total of seven other related salts have been isolated and structurally characterized revealing a surprisingly high incidence of Z' > 1 structures as a result of frustration in the charge-assisted hydrogen-bonded network.
引用
收藏
页码：4904 / 4919
页数：16
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