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Crystal Structures and Selected Properties of Co II Containing Thiostannates prepared by a New Room Temperature Route
Author(s) -
Lühmann Henning,
Jeß Inke,
Näther Christian,
Bensch Wolfgang
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900227
Subject(s) - hydrogen bond , crystallography , chemistry , molecule , pyridine , crystal structure , octahedron , ligand (biochemistry) , cyclohexane , crystallization , stereochemistry , medicinal chemistry , organic chemistry , biochemistry , receptor
The room temperature reaction of Na 4 Sn 2 S 6 · 5H 2 O with CoCl 2 · 6H 2 O and 2‐(aminomethyl)pyridine (2‐AMP) or trans ‐1,2‐diamino‐cyclohexane (DACH) leads to crystallization of two compounds with the compositions [Co(2‐(aminomethyl)pyridine) 3 ] 2 Sn 2 S 6 · 10H 2 O ( 1 ) and [Co( trans ‐1,2‐diaminocyclohexane) 3 ] 2 Sn 2 S 6 · 8H 2 O ( 2 ). In both compounds [Sn 2 S 6 ] 4– anions are present that are charge balanced each by two Co 2+ centered complexes. Each of the two Co II cations are sixfold coordinated by six N atoms of three 2‐AMP or DACH ligands within slightly distorted octahedra. In compound 1 , the two complexes are linked by one [Sn 2 S 6 ] 4– anion via strong N–H ··· S hydrogen bonds into centrosymmetric charge neutral trimeric units, that are further linked by weak C–H ··· S and N–H ··· S hydrogen bonds into chains that are directed along the a axis. These chains are further joined by N–H ··· O and O–H ··· O hydrogen bonds into a 3D network, with the H 2 O molecules forming chains along the b axis. The crystal structure of 2 is similar to that of 1 featuring trimeric units which are also linked into chains. Between the chains water molecules are embedded that link the chains into a 3D network. Upon heating 2 in a thermobalance the water and ligand molecules are removed in discrete steps, indicating that compounds with more condensed thiostannate networks will form.