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Held, Peter (2015). Crystal structure of bis(dimethyl-ammonium) hexaaquacobalt(II) bis(sulfate) dihydrate. Acta Crystallogr. Sect. E.-Crystallogr. Commun., 71. S. M77 - 7. CHESTER: INT UNION CRYSTALLOGRAPHY. ISSN 2056-9890

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Abstract

The title salt, (C2H8,N)(2)[Co(H2O)(6))](SO4)(2)center dot 2H(2)O, is isotypic with (C2H8,N)(2)[Ni(H2O)(6))](SO4)(2)center dot 2H(2)O. The Co-O bond lengths in the [Co(H2O)(6)](2+) complex cation show very similar distances as in the related Tutton salt (NH4)(2)[Co(H2O)(6))](SO4)(2) [average 2.093 (17) angstrom], but are significantly longer than in the isotypic Ni II compound (Delta d similar or equal to 0.04 angstrom). The cobalt cation reaches an overall bond-valence sum of 1.97 valence units. The S-O distances are nearly equal, ranging from 1.454 (4) to 1.470 (3) angstrom [mean 1.465 (12) angstrom]; however, the O-S-O angles vary clearly from 108.1 (2) to 110.2 (2)degrees [average bond angle 109.5 (9) ]. The non-coordinating water molecules and dimethylammonium cations connect the sulfate tetrahedra and the [Co(H2O)(6)](2+) octahedron via O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds of weak up to medium strength into a three-dimensional framework whereby the complex metal cations and sulfate anions are arranged in sheets parallel to (001).

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Held, Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-403896
DOI:	10.1107/S2056989015003400
Journal or Publication Title:	Acta Crystallogr. Sect. E.-Crystallogr. Commun.
Volume:	71
Page Range:	S. M77 - 7
Date:	2015
Publisher:	INT UNION CRYSTALLOGRAPHY
Place of Publication:	CHESTER
ISSN:	2056-9890
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Crystallography Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/40389