Acta Crystallographica Section E: Crystallographic Communications | |
Crystal structure of trans-bis(ethane-1,2-diamine-κ2N,N′)bis(thiocyanato-κN)chromium(III) perchlorate from synchrotron data | |
Choi, J.-H.1  Moon, D.2  | |
[1] Department of Chemistry, Andong National University, Andong 760-749, Republic of Korea;Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, Republic of Korea | |
关键词: CRYSTAL STRUCTURE; SYNCHROTRON RADIATION; ETHANE-1,2-DIAMINE; THIOCYANATE; TRANS-GEOMETRY; CHROMIUM(III) COMPLEX; HYDROGEN BONDS; | |
DOI : 10.1107/S2056989015009184 | |
学科分类:数学(综合) | |
来源: International Union of Crystallography | |
【 摘 要 】
The structure of the title compound, [Cr(NCS)2(C2H8N2)2]ClO4, has been determined from synchroton data. The asymmetric unit consists of one half of a centrosymmetric CrIII complex cation and half of a perchlorate anion with the Cl atom on a twofold rotation axis. The CrIII ion is coordinated by the four N atoms of two ethane-1,2-diamine (en) ligands in the equatorial plane and two N-bound thiocyanate (NCS−) anions in a trans-axial arrangement, displaying a slightly distorted octahedral geometry with crystallographic inversion symmetry. The Cr—N(en) bond lengths are in the range 2.053 (16)–2.09 (2) Å, while the Cr—N(thiocyanate) bond length is 1.983 (2) Å. The five-membered en rings are disordered over two sites, with occupancy ratios of 0.522 (16):0.478 (16). Each ClO4− anion is disordered over two sites with equal occupancy. The crystal structure is stabilized by intermolecular hydrogen bonds involving the en NH2 groups as donors and perchlorate O and thiocyanate S atoms as acceptors.
【 授权许可】
CC BY
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