Applying Ni(II) Amine Complexes and Sodium Thiostannate as Educts for the Generation of Thiostannates at Room Temperature

Hilbert, Jessica, Näther, Christian and Bensch, Wolfgang (2017) Applying Ni(II) Amine Complexes and Sodium Thiostannate as Educts for the Generation of Thiostannates at Room Temperature Crystal Growth & Design, 17 (9). pp. 4766-4775. DOI 10.1021/acs.cgd.7b00728.

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Abstract

A new versatile and fast room temperature synthesis route was developed in which Na4SnS4·14H2O and selected Ni(II)amine complexes (amine = ethylenediamine (en), 1,2-diaminocyclohexane (1,2-dach), 1,2-diaminopropane (1,2-dap), 2-(aminomethyl)pyridine (2amp)) were reacted in aqueous tren (tren = tris(2-aminoethyl)amine) solutions affording crystallization of six new compounds. During the reaction heteroleptic Ni2+ centered complexes are formed in situ by replacement of two bidentate ligands by the tetradentate tren molecule. The compounds poorer in water of the pseudopolymorphs of [Ni(tren)(en)]2[Sn2S6]·xH2O (x = 2 (1) and 6 (2)) and [Ni(tren)(1,2-dach)]2[Sn2S6]·xH2O (x = 3 (3) and 4 (4)) are formed after a very short reaction time of 1 day. Remarkably, keeping the reaction slurries at room temperature for 7 days the thermodynamically stable water richer compounds were obtained. The remaining compounds, [Ni(tren)(1,2-dap)]2[Sn2S6]·4H2O (5) and [Ni(tren)(2amp)]2[Sn2S6]·10H2O (6), crystallized between 1 and 7 days. The water of crystallization molecules in all compounds are involved in extended hydrogen bonding interactions significantly affecting the packing of cations and anions. Hirshfeld surfaces analyses give a detailed picture of intermolecular interactions which lead to the different packing motifs in the crystal structures.

Document Type: Article
Research affiliation: Kiel University
Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
DOI etc.: 10.1021/acs.cgd.7b00728
ISSN: 1528-7483
Date Deposited: 16 Jan 2018 15:45
Last Modified: 17 Jan 2018 08:00
URI: http://eprints.uni-kiel.de/id/eprint/41521

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