本文报导了六种新的二茂镱苯甲酸衍生物的合成:CP_2Y_6OCOC_6H_4(o—OC_2H_5),Cp_2Y_bOCOC6H_4(o—CH_2CH_2CH_3),Cp_2Y_bOCOC_6H_4(o—Cl),Cp_2Y_bOCOC_6H_4(o—Br),Cp_2Y_bOCOC_6H_4(O—I),Cp_2Y_bOCOC_6H_4(o—NHC_6H_5)。这些化合物经元素分析、光谱、质谱鉴定,均为羧酸阴离子与二茂镱的桥式配位二聚体结构。红外光谱及光电子能谱数 In this paper, the synthesis of six new ytterbium (Ⅲ) -benzoic acid derivatives was reported. The structures of two new ytterbium (Ⅲ) -benzoic acid derivatives were reported as follows: CP_2Y_6OCOC_6H_4 (o-OC_2H_5), Cp_2Y_bOCOC6H_4 (o-CH_2CH_2CH_3), Cp_2Y_bOCOC_6H_4 (o-Cl), Cp_2Y_bOCOC_6H_4 ), Cp_2Y_bOCOC_6H_4 (o-NHC_6H_5). These compounds were identified by elemental analysis, spectroscopy and mass spectrometry, all of them were bridged coordination dimer structures of carboxylic acid anions and ytterbium titanate. Infrared spectroscopy and photoelectron spectroscopy