Synthesis and crystal structures of cyclopentadienyl dimolybdenum carbonyl complexes |
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| Authors: | Li-Juan Tian Zhi-Hong Ma Zhan-Gang Han Xue-Zhong Zheng Jin Lin |
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| Institution: | (1) The College of Chemistry & Material Science, Hebei Normal University, 050016 Shijiazhuang, People’s Republic of China;(2) College of Basic Medicine, Hebei Medical University, 050017 Shijiazhuang, People’s Republic of China; |
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| Abstract: | Reactions of the fulvenes C5H4C(R
1
R
2) (R
1 = CH2CH3, R
2 = CH3 (1); R
1 = R
2 = C2H5 (2); R
1, R
2 = (CH2)4 (3), R
1,R
2 = (CH2)5 (4)] with Mo(CO)6 in refluxing xylene gave the corresponding cyclopentadienyl dimolybdenum carbonyl complexes (η5-C5H4CR1′R2′Mo(CO)3]2 (R
1′ = CH2CH3, R
2′ = CH3 (5); R
1′ = R
2′ = C2H5 (6); R
1′, R
2′ = CH(CH2)3 (7); R
1′, R
2′ = CH(CH2)4 (8)], which were characterized by elemental analysis, IR and 1H NMR spectra. The molecular structures were determined by single-crystal X-ray diffraction. The results indicated the exocyclic
double bond of the ligands 1 and 2 changed into a single bond and the exocyclic double bond of the ligands 3 and 4 underwent a double-bond isomerization process. |
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| Keywords: | |
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