...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polyhedron: The International Journal for Inorganic and Organometallic Chemistry >4+1 and 4+2 coordinated complexes of magnesium phthalocyanine with dioxane
【24h】

4+1 and 4+2 coordinated complexes of magnesium phthalocyanine with dioxane

机译：酞菁镁与二恶烷的4 + 1和4 + 2配位配合物

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two complexes of magnesium phthalocyanine with dioxane were obtained. They co-crystallise in the centrosymmetric space group of the triclinic system. One of them is biaxially ligated (4+2) complex MgPc(dioxane)2 and the other is bridged μ-dioxane(MgPc)_2. The interaction of the bridged dioxane molecule with two MgPc molecules is stronger than the interaction of two dioxane molecules axially ligated to the metal center of MgPc on the both sides of the Pc-plane. The strength of the MgO bond in these complexes correlates with their thermal stability. Owing to the Mg?O interaction of the bridged dioxane molecule with two MgPc units and formation of the μ-dioxane(MgPc)_2 complex, the Mg atom is significantly displaced (0.357(3)) from the plane defined by four isoindole N atoms of Pc. This interaction causes a distortion of planar Pc(2-) macrocycle to the saucer-shape form. In biaxially ligated MgPc(dioxane)_2 molecule the Pc(2-) macroring exhibits the planar form. Due to the steric hindrance of the axial ligand, the crystals exhibit better solubility than the parent MgPc, since the structure is less stabilized by π-π interactions between the aromatic Pc(2-) macrorings than in the structure of MgPc. Ligation of MgPc by dioxane does not change the colouring properties compared with the MgPc pigment. The calculated 3D molecular electrostatic potential maps are helpful for understanding the organisation and arrangement of molecules in the crystal.
机译：获得了酞菁镁与二恶烷的两种络合物。它们在三斜晶系的中心对称空间群中共结晶。其中一个是双轴连接的（4 + 2）配合物MgPc（dioxane）2，另一个是桥接的μ-二恶烷（MgPc）_2。桥接的二恶烷分子与两个MgPc分子的相互作用要强于轴向连接到Pc平面两侧MgPc的金属中心的两个二恶烷分子的相互作用。这些配合物中MgO键的强度与其热稳定性相关。由于桥接的二恶烷分子与两个MgPc单元之间的Mg2O相互作用以及μ-二恶烷（MgPc）_2配合物的形成，Mg原子从由四个异吲哚N原子限定的平面上明显位移了（0.357（3））。个人电脑。这种相互作用导致平面Pc（2-）大环向碟形形状的变形。在双轴连接的MgPc（二恶烷）_2分子中，Pc（2-）大环呈平面形式。由于轴向配体的位阻，晶体显示出比母体MgPc更好的溶解度，这是因为芳香族Pc（2-）环之间的π-π相互作用比MgPc的结构更不稳定。与MgPc颜料相比，二恶烷对MgPc的连接不会改变着色性能。计算出的3D分子静电势图有助于理解晶体中分子的组织和排列。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号