with ROH. The crystal structure of (2) has been determined from single-crystal X-ray diffraction data (Mo-Kα radiation). The complex crystallizes in the space group P21/c with unit-cell dimensions a= 12.324(7), b= 8.535(1), c= 17.897(9)Å, β= 126.71(3)°, Z= 4, and R 0.030 for 1 408 independent observations. In the dimeric molecular structure, with crystallographic site symmetry, two uranium atoms are joined
通式的新配合物[U(η-C 3 H ^ 5)2(OR)2 ] [R =的Et(1),
镨我(2),或卜吨(3)]已经制备由[C的反应(η-C 3 H ^ 5)4 ]与ROH。的(2)的晶体结构已经从单晶测定X射线衍射数据(
钼ķ α辐射)。该复合物在单元格尺寸为a = 12.324(7),b = 8.535(1),c = 17.897(9)Å,β= 126.71(3)°的空间群P 2 1 / c中结晶,Z = 4,R = 0.030(针对1 408个独立观测值)。在二聚体分子结构中,具有由于晶体学位点对称,两个
铀原子通过两个醇盐桥连接。
铀的配位多面体可以看作是扭曲的五边形双锥体,其赤道面由η-烯丙基
配体的末端碳和桥连氧所限定。双锥体的轴向位置被剩余的桥接氧和末端氧占据。后者显示出线性配位[U–O–C 178.0(10)°]。其他相关的键距为:U–O(桥接)2.271(10)和2.413(10);U–O(终端)2