Structural studies of crystalline 1-alkyl-3-methylimidazolium chloride salts

被引:128
作者
Downard, A
Earle, MJ
Hardacre, C [1 ]
McMath, SEJ
Nieuwenhuyzen, M
Teat, SJ
机构
[1] Queens Univ Belfast, Quill Ctr, Belfast BT9 5AG, Antrim, North Ireland
[2] Queens Univ Belfast, Sch Chem, Belfast BT9 5AG, Antrim, North Ireland
[3] CCLRC, Daresbury Lab, Warrington WA4 4AD, Cheshire, England
关键词
D O I
10.1021/cm034344a
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
The structures of three long alkyl chain imidazolium chloride salts have been determined by X-ray diffraction; one of the salts was isolated as two polymorphs. These compounds consist of regions containing interdigitated linear alkyl chains alternating with regions containing imidazolium headgroups, chloride ions, and solvent. The arrangement of the cation headgroup and the alkyl chain is strongly dependent on the thermal history of the salt and whether the C(2) position on the imidazolium ring is methylated or protiated. Structures are found where the headgroups within the same crystal are in different environments leading to a double bilayer structure which collapses on heating.
引用
收藏
页码:43 / 48
页数:6
相关论文
共 47 条
[31]   A2[MX4] copper(II) pyridinium salts.: From ionic liquids to layered solids to liquid crystals [J].
Neve, F ;
Francescangeli, O ;
Crispini, A ;
Charmant, J .
CHEMISTRY OF MATERIALS, 2001, 13 (06) :2032-2041
[32]   Structural studies on layered alkylpyridinium iodopalladate networks [J].
Neve, F ;
Crispini, A ;
Francescangeli, O .
INORGANIC CHEMISTRY, 2000, 39 (06) :1187-1194
[33]   Thermal properties of imidazolium ionic liquids [J].
Ngo, HL ;
LeCompte, K ;
Hargens, L ;
McEwen, AB .
THERMOCHIMICA ACTA, 2000, 357 :97-102
[34]   EVIDENCE FOR HYDROGEN-BONDS IN 1,2-DIMETHYL-3-PROPYLIMIDAZOLIUM CHLORIDE AND ITS CHLOROALUMINATE MOLTEN-SALTS [J].
SCORDILISKELLEY, C ;
ROBINSON, KD ;
BELMORE, KA ;
ATWOOD, JL ;
CARLIN, RT .
JOURNAL OF CRYSTALLOGRAPHIC AND SPECTROSCOPIC RESEARCH, 1993, 23 (07) :601-606
[35]  
Seddon KR, 1997, J CHEM TECHNOL BIOT, V68, P351, DOI 10.1002/(SICI)1097-4660(199704)68:4<351::AID-JCTB613>3.0.CO
[36]  
2-4
[37]   Influence of chloride, water, and organic solvents on the physical properties of ionic liquids [J].
Seddon, KR ;
Stark, A ;
Torres, MJ .
PURE AND APPLIED CHEMISTRY, 2000, 72 (12) :2275-2287
[38]   Catalytic reactions in ionic liquids [J].
Sheldon, R .
CHEMICAL COMMUNICATIONS, 2001, (23) :2399-2407
[39]   STRUCTURE OF DODECYLDIMETHYLPROPYLAMMONIUM BROMIDE MONOHYDRATE [J].
TAGA, T ;
MACHIDA, K ;
KIMURA, N ;
HAYASHI, S ;
UMEMURA, J ;
TAKENAKA, T .
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1986, 42 :608-610
[40]   STRUCTURE OF DODECYLDIMETHYLPROPYLAMMONIUM BROMIDE HEMIHYDRATE [J].
TAGA, T ;
MACHIDA, K ;
KIMURA, N ;
HAYASHI, S ;
UMEMURA, J ;
TAKENAKA, T .
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 1987, 43 :1204-1206