Crystal structure of bis[cis-diaquabis(phenanthroline) cobalt(II)] bis(citrato)germanate(IV) dinitrate
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Дата
2021
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Анотація
The asymmetric unit of the title compound, [Co(C12H8N2)2(H2O)2]2[Ge-
(C6H5O7)2](NO3)2, features two complex [(C12H8N2)2(H2O)2Co]2+ cations,
two NO3
anions as well as one centrosymmetric [(C6H5O7)2Ge]2 anion.
Two HCit ligands (Cit = citrate, C6H4O7) each coordinate via three different
oxygen atoms (hydroxylate, -carboxylate, -carboxylate) to the Ge atom,
forming a slightly distorted octahedron. The coordination polyhedron of the Co
atom is also octahedral, formed by coordination of four nitrogen atoms from two
phenanthroline molecules and two water oxygen atoms. In the crystal, the
cations and anions are linked by hydrogen bonds and form layers parallel to the
bc plane. The structure exhibits disorder of the NO3
anion [disorder ratio
0.688 (9) to 0.312 (9)]. There are also highly disordered solvent molecules
(presumably water and/or ethanol) in the crystal structure; explicit refinement of
these molecules was not possible, and the content of the voids was instead taken
into account using reverse Fourier transform methods [SQUEEZE procedure in
PLATON; Spek (2015). Acta Cryst. C71, 9–18]. The given chemical formula and
other crystal data do not take into account the unknown solvent molecule(s).
Опис
Ключові слова
crystal structure, bis(-citrato)germanate, 3d metal salt, cobalt
Бібліографічний опис
Acta Crystallographica