Synthesis of gold(<scp>iii</scp>) ← gold(<scp>i</scp>)–NHC through disproportionation: the role of gold(<scp>i</scp>)–NHC in the induction of apoptosis in HepG2 cells
作者:Abhishek Nandy、Tapastaru Samanta、Sumana Mallick、Partha Mitra、Saikat Kumar Seth、Krishna Das Saha、Salem S. Al-Deyab、Joydev Dinda
DOI:10.1039/c5nj02979a
日期:——
The anticancer activities of novel Au(i) and Au(iii)–NHC complexes based on 2-[(6-methylpyridin-2-yl)]imidazo[1,5-a]pyridin-4-ylium hexafluorophosphate have been investigated.
Synthesis, structure and theoretical studies of Hg(II)–NH carbene complex of annulated ligand pyridinyl[1,2-a]{2-pyridylimidazol}-3-ylidene hexaflurophosphate
Experimental and theoretical studies of a new class of novel annulated imidazolium scffords 2a, 2b, 2c and their Hg(II)-NHC complexes 3a, 3b and 3c have been synthesized and characterized by different spectroscopic techniques. Molecular structures of 3a and 3b have been determined by single crystal X-ray diffraction studies. Virtual linear geometry [C-carbene-Hg-C-carbene 176.56(17)degrees] around Hg of the complex 3b is observed where as in 3a and 3c its deviate a more. DFT calculations provide geometrical parameters in conformity with the experimental values in case of 3a. The molecules prefer syn configuration over the anti due to lower energy supported by theoretical studies. Attention has given paid for theoretical calculations and comparison of 3a and 3c to observe the steric effect of -CH3 group in the scaffords where as in case of 3b the -CH3 group remain innocent. (C) 2011 Elsevier B.V. All rights reserved.