| 摘 要： | Organoboryl germanium(Ⅱ) oxides were synthesized from the 1,4-addition reaction of L'Ge(L'=HCC(CH_2)N(Ar)]C(Me)N(Ar),Ar=2,6-iPr_2C_6H_3) with selected monosubstituted arylboronic acids RB(OH)_2(R=2,6-Me_2C_6H_3,2,4,6-Me_3C_6H_2,1-Naph) at the molar ratios of 1:1 and 2:1.The mononuclear products RB(OH)OGeL(L=CHC(Me)N(Ar)]_2,Ar=2,6-iPr_2C_6H_3;R=2,6-Me_2C_6H_3(1),2,4,6-Me_3C_6H_2(2),1-Naph(3)) containing the Ge-O-B core were obtained smoothly through the 1:1 reaction.However,the reaction of L'Ge with 2,6-Me_2C_6H_3B(OH)_2 in a 2:1 ratio gave only the mononuclear product(1) instead of the expected binuclear one.What's more,a new borate compound (2,6-Me_2C_6H_3)_4B_5O_6]~-H:C]~+(4)(:C=CN(iPr)C(Me)]_2) was concomitantly formed when the in situ prepared L'Ge was used as the precursor.In contrast,the use of 2,4,6-Me_3C_6H_2B(OH)_2 or1-NaphB(OH)_2 as the organoboryl source in the similar reaction led to the formation and isolation of the binuclear products RB(OGeL)2(R=2,4,6-Me_3C_6H_2(5),1-Naph(6)) containing the Ge-O-B-O-Ge core in a straight way.Compounds 1~6 were determined by single-crystal X-ray diffraction analysis.
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