Crystal structure of [2,13-bis­(acetamido)-5,16-dimethyl-2,6,13,17-tetra­aza­tri­cyclo­[16.4.0.07,12]docosane-κ4N]silver(II) dinitrate from synchrotron X-ray data

Acta Crystallographica Section E: Crystallographic Communications

Choi, J.-H.¹  Moon, D.² 

[1] Department of Chemistry, Andong National University, Andong 36729, Republic of Korea;Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea

关键词: CRYSTAL STRUCTURE;    MACROCYCLE;    SYNCHROTRON RADIATION;    SILVER(II) COMPLEX;    NITRATE ION;    TRANS-III CONFORMATION;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989018003560

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The asymmetric unit of the title compound, [Ag(C24H46N6O2)](NO3)2 [C24H46N6O2 is (5,16-dimethyl-2,6,13,17-tetra­aza­tri­cyclo­[16.4.0.07,12]docosane-2,13-di­yl)diacetamide, L], consists of one independent half of the [Ag(C24H46N6O2)]2+ cation and one nitrate anion. The Ag atom, lying on an inversion centre, has a square-planar geometry and the complex adopts a stable trans-III conformation. Inter­estingly, the two O atoms of the pendant acetamide groups are not coordinated to the AgII ion. The longer distance of 2.227 (2) Å for Ag—N(tertiary) compared to 2.134 (2) Å for Ag—N(secondary) may be due to the effects of the attached acetamide group on the tertiary N atom. Two nitrate anions are very weakly bound to the AgII ion in the axial sites and are further connected to the ligand of the cation by N—H⋯O hydrogen bonds. The crystal packing is stabilized by hydrogen-bonding inter­actions among the N—H donor groups of the macrocycle and its actetamide substituents, and the O atoms of the nitrate anions and of an acetamide group as the acceptor atoms.

【 授权许可】

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