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Liu Shutang, Honrath, U.. Synthesis and Structure or Organo-Phosphido-Bridged Tri-and Tetracobalt Carbonyl Cluster Co5(CO)3(μ3- PR), Co4(μ-CO)2(CO)8(μ5-PR)3(R = NEt3, OBu-n, NMe2) and Heteronuclear Cluster Compounds Co2Fe(CO)9 (μ3-PR) (R = NEt2,Ph)[J]. Chem. J. Chinese Universities, 1985, 6(5): 377.