Synthesis, structure and luminescent properties of rhenium(I) carbonyl complexes containing pyrimidine-functionalized N-heterocyclic carbenes
摘要:
Synthesis, structures and photophysical properties of a series of neutral fac-[Re(CO)(3)(C boolean AND N)Cl] complexes, where C boolean AND N is a pyrimidine-functionalized N-heterocyclic carbene [3-methyl-1-(2-pyrimidine)imidazol-2-ylidene, 1; 3-n-butyl-1-(2-pyrimidine) imidazol-2-ylidene, 2; 3-benzyl-1-(2-pyrimidine) imidazol-2-ylidene, 3; 3-mesityl-1-(2-pyrimidine)-imidazol-2-ylidene, 4] are reported. These complexes have been characterized by H-1 NMR, C-13 NMR, elemental analysis, and IR spectra. Their electrochemical and photophysical behaviors, along with the X-ray crystal structures of 2 and 4, are also reported. In both degassed CH2Cl2 solutions and solid state at room temperature, complexes 1-4 exhibit the emissions at 515-570 nm. (C) 2012 Elsevier B.V. All rights reserved.
Iridium and Ruthenium Complexes with Chelating N-Heterocyclic Carbenes: Efficient Catalysts for Transfer Hydrogenation, β-Alkylation of Alcohols, and N-Alkylation of Amines
作者:Dinakar Gnanamgari、Effiette L. O. Sauer、Nathan D. Schley、Chase Butler、Christopher D. Incarvito、Robert H. Crabtree
DOI:10.1021/om800821q
日期:2009.1.12
and Ru complexes of a chelating pyrimidine-functionalized N-heterocycliccarbene were synthesized. The complexes were characterized by NMR spectroscopy and single-crystal X-ray diffraction and were found to be catalytically active for transfer hydrogenation, β-alkylation of secondaryalcohols with primaryalcohols, and N-alkylation of amines with primaryalcohols. Notably, the Ir complexes were found