Издательство СО РАН

Издательство СО РАН

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Поиск по журналу

Журнал структурной химии

2012 год, номер 2

CRYSTAL STRUCTURE AND SPECTROSCOPIC PROPERTIES OF TRANS-DICHLOROBIS(1,3-PROPANEDIAMINE)chromium(III) perchlorate

J.-H. Choi1, A. Takayama2, T. Suzuki2
1 Department of Chemistry, Andong National University
2 Department of Chemistry, Okayama University
jhchoi@andong.ac.kr
Ключевые слова: crystal structure, trans-isomer, chromium(III) complex, 1, 3-propanediamine, spectral properties
Страницы: 395-399

Аннотация

The crystal structure of trans-[Cr(tn)2Cl2]ClO4 (tn = 1,3-propanediamine) is determined by a single-crystal X-ray diffraction study at 185 K. The Cr atom is in a slightly distorted octahedral environment coordinated by four nitrogen atoms of two tn ligands and two chlorine atoms in trans position. The orientations of two six-membered rings in the complex cation are in an anti chair-chair conformation with respect to each other. The mean Cr-N(tn) and Cr-Cl bond lengths are 2.0862(2) and 2.3112(6) Å respectively. The ClO anions have a slightly distorted tetrahedral geometry with Cl-O lengths and O-Cl-O angles influenced by the hydrogen bonding. The crystal packing is stabilized by several hydrogen bonds. The infrared and electronic absorption spectral properties are also described along with the results of X-ray crystallography.