Rhodium and Iridium Complexes Bearing “Capping Arene” Ligands: Synthesis and Characterization
Rhodium and Iridium Complexes Bearing “Capping Arene” Ligands: Synthesis and Characterization
复制标题
带有“封端芳烃”配体的铑和铱配合物:合成和表征
DOI:
10.1021/acs.organomet.1c00250
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发表时间:
2021
期刊:
影响因子:
2.8
通讯作者:
Gunnoe, T. Brent
中科院分区:
文献类型:
--
作者:
Gu, Shunyan;Musgrave, Charles B.;Gehman, Zoë M.;Zhang, Ke;Dickie, Diane A.;Goddard, William A.;Gunnoe, T. Brent
A series of olefin-coordinated RhIand IrIcomplexes bearing “capping arene” ligands (5-XFP and 6-XFP, see below) of the general formulas (FP)M(olefin)X, [(FP)M(olefin)2][M(olefin)2X2], and [(FP)M(olefin)2]BF4(FP = “capping arene” ligands, X = halide or pseudohalide, olefin = ethylene, cyclooctene, (olefin)2= (C2H4)2or cyclooctadiene) were synthesized and characterized. Single-crystal X-ray diffraction studies revealed structural differences that are a function of the identity of the capping arene ligand and the metal. For 5-XFP ligands (5-XFP = 1,2-bis(N-7-azaindolyl)-benzene and derivatives with substituents on the arene moiety), the coordination to both Rh and Ir gives rise to complexes that are best described as 16-electron and square planar. For 6-XFP ligands (6-XFP = 8,8′-(1,2-phenylene)diquinoline and derivatives with substituents on the arene moiety), the structures of Rh and Ir complexes are better considered as 18-electron and trigonal bipyramidal due to an η2-C,Cinteraction between the metal center and the arene group of the capping arene ligand. Variable-temperature1H NMR spectroscopy studies of ethylene rotation demonstrated that the Ir complexes possess higher activation barriers to rotation in comparison to Rh complexes and the 6-XFP complexes tend to give ethylene higher rotational barriers in comparison to 5-XFP complexes for complexes of the type (FP)Rh(η2-C2H4)Cl. DFT calculations are consistent with enhanced Rh to ethylene π-back-donation for Rh complexes ligated by the 6-XFP ligands in comparison to the 5-XFP ligands.
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影响因子:
3.9
作者:
Jonathan P. Rourke
通讯作者:
Jonathan P. Rourke
影响因子:
--
作者:
E. Lundquist;J. Huffman;K. Folting;K. G. Caulton
通讯作者:
K. G. Caulton
影响因子:
15
作者:
Valahovic,MarkT;Gunnoe,TBrent;Sabat,Michal;Harman,WDean
通讯作者:
Harman,WDean
DOI:
10.1039/j19700002875
发表时间:
1970
期刊:
Journal of The Chemical Society A: Inorganic, Physical, Theoretical
影响因子:
--
作者:
K. Moseley;J. Kang;P. Maitlis
通讯作者:
P. Maitlis
影响因子:
15
作者:
Liu Z;Yamamichi H;Madrahimov ST;Hartwig JF
通讯作者:
Hartwig JF