Hydrothermal Synthesis, Structure, Properties of a Novel Supramolecular Complex: [LaCd(bpy)₄(NO₃)₅]

A novel lanthanum cadmium complex [LaCd(bpy)₄(NO₃)₅] (where bpy = 2,2′-Bipyridine) has been synthesized and structurally characterized by X-ray diffraction method, elemental analysis, spectral method (IR), powder X-ray diffraction (XRD), electronic spectra (UV–vis) and photoluminescence properties. The complex crystallizes in the monoclinic space group <i>P21</i>/<i>c</i> with unit cell parameters <i>a</i> = 16.883(2) Å, <i>b</i> = 14.382(2) Å, <i>c</i> = 18.981(3) Å, <i>β</i> = 96.806(2), <i>V</i> = 4576.5(11) ų, and <i>Z</i> = 4. The complex is completed by two crystallographically and chemically independent, octahedrally coordinated Cd(II) ion and icosahedronly coordinated La(III) ion. The electronic spectra and photoluminescence of the complex has been described.[Supplemental materials are available for this article. Go to the publisher's online edition of Molecular Crystals and Liquid Crystals to view the free supplemental file.]一种新型镧镉配合物[LaCd(bpy)₄(NO₃)₅]（其中bpy为2,2′-联吡啶（2,2′-Bipyridine））已成功合成，并通过X射线衍射（X-ray diffraction）法、元素分析、红外（IR）光谱法、粉末X射线衍射（XRD）、紫外-可见（UV–vis）电子光谱以及光致发光性能测试完成了结构表征。该配合物属于单斜晶系，空间群为P2₁/c，晶胞参数为：a=16.883(2) 埃，b=14.382(2) 埃，c=18.981(3) 埃，β=96.806(2)°，晶胞体积V=4576.5(11) 埃³，晶胞内分子数Z=4。该配合物包含两个晶体学与化学上均独立的配位中心：八面体配位的镉(II)离子与二十面体配位的镧(III)离子。本研究已对该配合物的电子光谱及光致发光性能进行了阐述。本文附带补充材料，可前往出版商旗下《分子晶体与液晶（Molecular Crystals and Liquid Crystals）》在线版免费查阅相关补充文件。