钴碳原子簇络合物的研究——α-萘基,α-噻吩基和取代苯基苯乙炔六羰基二钴络合物的合成

Study on Cobalt-Carbon Cluster--Synthesis ofα-Naphthyl,α-Thienyl and Substituted-Phenyl Phenylacetylene Dicobalt Hexacarbonyls

通过α-萘基、α-噻吩基和取代苯基苯乙炔与Co2(CO)8的络合反应以及对氨基苯基苯乙炔六羰基二钴与乙酰氯的N-乙酰化反应,合成了十二个新的二芳基乙炔六羰基二钴络合物。实验表明,氨基对位的钴碳簇核PhC_(2)Co_(2)(CO)_(6)对苯胺的亲核活性无显著影响。

12 New diarylacetylenedicobalt hexacarbonyl complexes have been synthesized by complexation reaction of α-naphthyl,α-thienyl or substituled-phenyl phenylace-tylene with Co_(2)(CO)_(8) and N-acetylalion of p-aminophenyl phenylacetylenedicobalt hexacarbonyl.The structures of all the complexes were characterized by elemental analysis,IRand ^(1)HNMR spectroscopy.Through comparison of N-acetylation of p-aminophenyl phenylacetylenedicobalt hexacarbonyl and aniline under comparable conditions,it was found that the cluster core PhC_(2)Co_(2)(CO)_(6) para to an amino group attached to aromatic ring does not obviously affect the nucleophilicily of aniline.