کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9769840 | 1501932 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and crystal structures of two new Cd(II) complexes with 3-(2-pyridy)pyrazole-based ligand: influence of anions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Two new Cd(II) complexes with a 3-(2-pyridyl)pyrazole-based ligand, [Cd(L)2(SCN)2] (1) and {[Cd(L)2N3](ClO4)}n (2) (L=3-(2-pyridyl)pyrazol-1-ylmethylbenzene) were synthesized and structurally characterized by elemental analyses, IR and single crystal X-ray diffraction analysis. Complex 1 crystallizes in the monoclinic system, space group C2/c, with a=14.833(3), b=13.790(3), c=15.970(3) Ã
, β=110.89(3)° and Z=4, while 2 crystallizes in the monoclinic system, space group P21/c, with a=13.622(4), b=23.286(7), c=10.547(3) Ã
, β=111.084(6)° and Z=4. In the two complexes, the Cd(II) centers are coordinated by six nitrogen atoms, in which four from two distinct L ligands and two from thiocyanato (1) or azido (2) anions. Complex 1 has a mononuclear structure, whereas 2 has a 1D chain structure bridged by azido anions. In 2, the azido adopts a μ-1,3-trans coordination mode, which is not common in the azide Cd(II) complexes. In addition, in the structure of 2, the 1D chains were further assembled into a quasi-3D supramolecular network by the C-Hâ¯O hydrogen-bonding interactions. The structural difference of the two complexes is attributable to the different anions, which have different coordination natures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 754, Issues 1â3, 8 November 2005, Pages 71-76
Journal: Journal of Molecular Structure - Volume 754, Issues 1â3, 8 November 2005, Pages 71-76
نویسندگان
Xue-Song Shi, Chun-Sen Liu, Jian-Rong Li, Yue Guo, Jiang-Ning Zhou, Xian-He Bu,