First Sonogashira coupling reactions with the chlorobenzeneCr(CO)2PPh3 complex
摘要:
Alkynylated benzeneCr(CO)(2)PPh3 complexes 4 are readily synthesized in moderate to good yields by Sonogashira couplings of the chlorobenzeneCr(CO)(2)PPh3 complex 2 with terminal alkynes 3. (C) 1999 Elsevier Science S.A. All rights reserved.
Further studies of the metal–carbonyl bending vibrations of (π-ring)M(CO)<sub>2</sub>X derivatives of the first-row transition metals
作者:A. R. Manning
DOI:10.1039/j19710000106
日期:——
of various (π-ring)M(CO)2X complexes of chromium, manganese, and iron have been investigated in the regions 225–700 and 1850–2100 cm–1. Absorption bands due to vibrations of the (π-ring)M(CO)2 moieties are reported and assigned. Trends in frequencies and relative intensities of those bands which are due largely to the δ(MCO) vibrations are discussed, and shown to depend on the ligand X.
在225–700和1850–2100 cm –1区域研究了铬,锰和铁的各种(π-环)M(CO)2 X络合物的ir光谱。报告并指定了由于(π环)M(CO)2部分的振动引起的吸收带。讨论了这些频带的频率和相对强度的趋势,这些趋势主要是由δ(MCO)振动引起的,并且显示出取决于配体X的趋势。
Iwata, R.; Ogata, I., Nippon Kagaku Zasshi, 1969, vol. 90, p. 1156 - 1159
作者:Iwata, R.、Ogata, I.
DOI:——
日期:——
The structure of (η6-C6H5Cl)Cr(CO)2PPh3
作者:Judith L Eglin、Laura T Smith
DOI:10.1016/s0020-1693(01)00475-3
日期:2001.8
In a synthetic route that varies from the standard procedure requiring irradiation, the (eta (6)-C6H5Cl)Cr(CO)(2)PPh3 complex is obtained upon reacting (eta (C6H5Cl)-C-6)Cr(CO)(3) With tetrakis(triphenylphosphine)palladium(0), CuI, and trimethylsilylphenylacetylene in triethylamine. The X-ray crystal structure of the yellow-orange crystals of (eta (6)-C6H5Cl)Cr(CO)(2)PPh3 allows structural comparisons to related (arene)Cr(Co)(2)PR3 complexes. (C) 2001 Elsevier Science B.V. All rights reserved.