镧系金属杂—2,3,4,5—四苯基环戊二烯环状化合物的合成及其表征

SYNTHESIS AND CHARACTERIZATION OF f-ELEMENTS-2,3,4,5-TETRAPHENYL-CYCLOPENTADIENE COMPLEXES

二苯乙炔和金属锂在乙醚中反应得到1,4-二锂四苯基丁二烯,再与无水氧化希土反应得到了两种系金属条-2,3,4,5-四苯基环戊二烯环状化合物。通过元素分析、红外光谱、核磁共振谱、热失重及电子能谱的分析,对所合成的化合物进行了表征;并对化合物的水解产物作了红外光谱、质谱和核磁共振谱分析,确认下列两种化合物的存在:

1,4-dilithiotetraphenylbutadiene was obtained by the reaction of diphenylacetylene with lithium in Et2O and two kinds of f-elements-2,3,4,5-tetraphenyl-cyclopentadiene complexes were prepared by the further reaction of Li(C6H5)C=C(C6H5)(C6H5)C = C(C6H5) Li with LnCl3 in THF. These complexes were identified by elements analyses, IR, NMR, thermal ana-lyses and ESCA. The analyses of hydrolytic products were made by IR, MS and NMR. The tructural formulae of the complexes are as follows: