作者: P. Zanello , A. Cinquantini , S. Mangani , G. Opromolla , L. Pardi
DOI: 10.1016/0022-328X(94)88122-7
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摘要: … The resulting black-brown precipitate was filtered and was extracted with CH,Cl,, yielding a black-green solution, which was layered with 5 ml of diethyl ether and cooled to +2”C, …