Crystal structure of cis-di­chlorido­(1,4,8,11-tetra­aza­cyclo­tetra­decane-κ4N)chromium(III) (oxalato-κ2O1,O2)(1,4,8,11-tetra­aza­cyclo­tetra­decane-κ4N)chromium(III) bis(perchlorate) from synchrotron 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;    CYCLAM;    SYNCHROTRON RADIATION;    CHROMIUM(III) COMPLEX;    CHLORIDE LIGAND;    OXALATO LIGAND;    CIS-V CONFORMATION;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989016014134

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the asymmetric unit of the title compound, [CrCl2(C10H24N4)][Cr(C2O4)(C10H24N4)](ClO4)2 (C10H24N4 = 1,4,8,11-tetra­aza­cyclo­tetra­decane, cyclam; C2O4 = oxalate, ox), there are two independent halves of the [CrCl2(cyclam)]+ and [Cr(ox)(cyclam)]+ cations, and one perchlorate anion. In the complex cations, which are completed by application of twofold rotation symmetry, the CrIII ions are coordinated by the four N atoms of a cyclam ligand, and by two chloride ions or one oxalate bidentate ligand in a cis arrangement, displaying an overall distorted octa­hedral coordination environment. The Cr—N(cyclam) bond lengths are in the range of 2.075 (5) to 2.096 (4) Å while the Cr—Cl and Cr—O(ox) bond lengths are 2.3358 (14) and 1.956 (4) Å, respectively. Both cyclam moieties adopt the cis-V conformation. The slightly distorted tetra­hedral ClO4− anion remains outside the coordination sphere. The supra­molecular architecture includes N—H⋯O and N—H⋯Cl hydrogen bonding between cyclam NH donor groups, O atoms of the oxalate ligand or ClO4− anions and one Cl ligand as acceptors, leading to a three-dimensional network structure.

【 授权许可】

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