Crystal structure of bis(1,3-diisopropyl-4,5-dimethylimidazolium) tetrachloropalladate dihydrate, (C11H21N2)2PdCl4 · 2H2O

Abstract

Abstract

1-Benzyl-4,5-diphenyl-3-vinylimidazolium bromide

“…Qualitatively, bond distances in the imidazolium ring show the typical short (C2ÐN1 and C2ÐN3), long (N1ÐC5 and N3ÐC4), and short (C4ÐC5) variation (Elaiwi et al, 1995). Quantitatively, they agree, within experimental error, with the averages of those reported for three other tetra-substituted imidazolium species, (II), (III) and (IV) (Kuhn et al, 1996(Kuhn et al, , 1999(Kuhn et al, , 2001).…”

Reactivity of free N-heterocyclic carbenes in dichloromethane

“…In contrast to bulky NHCs, which are synthesised by deprotonation of the corresponding imidazolium salts, 14 Me IPr is commonly obtained through reduction of the thiourea derivative with potassium metal. 15 Therefore, the [ Me IPr H] + cation was only obtained as decomposition product from metal complexes with Me IPr and only single crystal X-ray diffraction data without further properties has been reported for: [ Me IPr H][B(OMe) 4 ], 16 [ Me IPr H] 2 [PdCl 4 ]·2H 2 O, 17 [ Me IPr H]Cl·3CHCl 3 18 and [ Me IPr H]Cl. 19–21 Only [ Me IPr H][BF 4 ] has been synthesised deliberately, but has only been characterised by NMR spectroscopy and single crystal X-ray diffraction.…”