ISSN:
1573-1111
Keywords:
Liquid clathrate
;
indium
;
crystal structure
;
18-crown-6
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The synthesis of the first liquid clathrate derived from an indium precursor is described. The aromatic/anion ratio of the inclusion complex prepared using benzene is 12.4. The use of toluene results in the inclusion of 10.3 guest toluene molecules/anion. The crystal structure of the parent complex, [K·18-Crown-6]2[InClI2(CH3)][InClI(CH3)2] was carried out. The compound belongs to the monoclinic space groupP21/c, witha=19.508(9),b=8.503(5), andc=29.437(9) Å, β=96.55(3)°, andD calc=1.83 g cm−3 forZ=4. Least-squares refinement based on 3449 observed reflections led to a finalR=0.099. The structure displays two different environments for the two K+ cations in the asymmetric unit. One adopts the near-planar [K·18-crown-6]+ configuration while the other K+ resides 0.81 Å above the second 18-crown-6 plane. The latter K+ is apparently pulled out of the crown by a strong interaction with a Cl− ion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00663000
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