Polymorphism of the Double Octa(ε-caprolactam)europium(III) Hexa(isothiocyanato)chromate(III) Complex

A new structural polymorph of the compound [Eu(ε-C 6 H 11 NO) 8 ][Cr(NCS) 6 ] was isolated from the solid product mixture obtained in the reaction of EuCl 3 , K 3 [Cr(NCS) 6 ], and ε-caprolactam (ε-C 6 H 11 NO) in aqueous solution. The crystals were triclinic, space group. P , Z = 2, a = 14.2320(4)...

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Published inRussian journal of coordination chemistry Vol. 45; no. 1; pp. 42 - 46
Main Authors Virovets, A. V., Peresypkina, E. V., Cherkasova, E. V., Cherkasova, T. G.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2019
Springer Nature B.V
Subjects
Aqueous solutions
Caprolactam
Chemistry
Chemistry and Materials Science
Chromates
Europium
Inorganic Chemistry
Physical Chemistry
Polymorphism
ε-caprolactam
X-ray diffraction
double complex salt
polymorphism
chromium(III)
europium(III)
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Summary:A new structural polymorph of the compound [Eu(ε-C 6 H 11 NO) 8 ][Cr(NCS) 6 ] was isolated from the solid product mixture obtained in the reaction of EuCl 3 , K 3 [Cr(NCS) 6 ], and ε-caprolactam (ε-C 6 H 11 NO) in aqueous solution. The crystals were triclinic, space group. P , Z = 2, a = 14.2320(4) Å, b = 14.5298(4) Å, c = 17.0014(5) Å, α = 92.4190(10)°, β = 91.0880(10)°, γ = 108.4850(10)°, V = 3329.39 Å 3 , ρ(calcd.) = 1.454 g/cm 3 , R 1 = 0.0419 (CIF file CCDC no. 1827162).
ISSN:1070-3284
1608-3318
DOI:10.1134/S1070328419010123