New N-heterocyclic carbene mercury(II) and silver(I) complexes

The complexes [1-(9-anthracenylmethyl)-3-octylimy]2Hg[HgCl4] (2a) (imy = imidazol-2-ylidene) and [1-(9-anthracenylmethyl)-3-butylbimy]2AgPF6 (2b) (bimy = benzimidazol-2-ylidene) have been prepared and characterized. Crystal packing of complex 2a revealed that 1D polymeric chains are formed by [1-(9-anthracenylmethyl)-3-octylimy]Hg and [HgCl4]2− through weak Hg…Cl bonds. The packing diagram of 2b showed that 1D supramolecular chains are formed by both benzimidazole ring head to tail π–π stacking interactions and anthracene ring face-to-face π–π stacking interactions.

The complexes [1-(9-anthracenylmethyl)-3-octylimy]2Hg[HgCl4] (2a) (imy = imidazol-2-ylidene) and [1-(9-anthracenylmethyl)-3-butylbimy]2AgPF6 (2b) (bimy = benzimidazol-2-ylidene) have been prepared and characterized. Crystal packing of complex 2a revealed that 1D polymeric chains are formed by [1-(9-anthracenylmethyl)-3-octylimy]Hg and [HgCl4]2− through weak Hg…Cl bonds. The packing diagram of 2b showed that 1D supramolecular chains are formed by both benzimidazole ring head to tail π–π stacking interactions and anthracene ring face-to-face π–π stacking interactions.Figure optionsDownload as PowerPoint slide