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Formation of [(C n C 1 imTe) 4 Hg] 2+ ( n = 6, 8) upon in‐situ Generation of Dialkylimidazole‐2‐Tellurones in Ionic Liquids at Room Temperature
Author(s) -
Donsbach Carsten,
Dehnen Stefanie
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800771
Subject(s) - chemistry , homoleptic , van der waals force , alkyl , crystallography , ionic liquid , stacking , ionic bonding , crystal structure , inorganic chemistry , supramolecular chemistry , medicinal chemistry , ion , catalysis , metal , organic chemistry , molecule
The synthesis of a homoleptic Hg II complexes with in situ‐formed N‐heterocyclic carbene telluride ligands is reported. Tetrakis(1‐hexyl‐3‐methylimidazole‐2‐tellurone) mercury(II), [(C 6 C 1 imTe) 4 Hg] 2+ ( 1 ), and tetrakis(1‐octyl‐3‐methylimidazole‐2‐tellurone) mercury(II), [(C 8 C 1 imTe) 4 Hg] 2+ ( 2 ), emerge from reaction mixtures containing telluridomercurate anions and potassium cations in imidazolium‐based ionic liquids (C n C 1 Im)[BF 4 ] ( n = 6, 8), if these are exposed to ambient conditions, that is, air, moisture and room temperature. The compounds crystallize with two of the ionic liquid cations each, and form van der Waals dimers via Te ··· Te interactions in the crystal. Although being coordinated in a homoleptic manner, the orientation of the imidazolium ligands is such that two of them undergo π‐stacking interactions, while the others interact with neighboring units via their alkyl chains.