Gold Compounds as Ionic Liquids. Synthesis, Structures, and Thermal Properties of N,N '-Dialkylimidazolium Tetrachloroaurate Salts
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Inorganic Chemistry
ISSN: 0020-1669
, E-ISSN: 1520-510X
|
| Output data |
Year: 1999,
Volume: 38,
Number: 25,
Pages: 5637-5641
Pages count
: 5
DOI:
10.1021/ic990657p
|
| Authors |
Hasan Masihul
,
Kozhevnikov Ivan V.
,
Siddiqui M.Rafiq H.
,
Steiner Alexander
,
Winterton Neil
|
| Affiliations |
| 1 |
Leverhulme Centre for Innovative Catalysis and Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, U.K.
|
|
The salts [C6H11N2][AuCl4] (1) and [C8H15N2][AUC(14)] (2) ([C6H11N2](+) = 1-ethyl-3-methylimidazolium; [C8H15N2](+) 1- butyl-3-methylimidazolium), prepared by a solvent-free method, display similar crystal structures. 1 crystallizes in the monoclinic P2(1)/e space group (a = 11.1915(15) Angstrom, b= 12.380(2) Angstrom, c = 9.2883(13) Angstrom; beta 98.810(16)degrees; Z =4) and 2 in the triclinic P (1) over bar space group (a = 7.9354(14) Angstrom, b = 8.3930(15) A, c = 11.397(2) Angstrom; a 83.94(2)degrees, beta = 87.93(2)degrees, gamma = 78.04(2)degrees; Z = 2). In both cases, a unique motif is seen consisting of linear chains of alternating comer-to-face arranged [AuCl4](-) ions at A...Cl separations of 3.356(3) Angstrom (1) and 3.452(3) Angstrom (2). Ionic liquid behavior is observed from 58 to 220 degrees C, for 1 and 50 to 250 degrees C for 2.