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Another Example for the Ability of the $\rm SbS^{3-}_{3}$ Anion to act as a Bidentate Ligand: Solvothermal Synthesis, Crystal Structure, Calculated and Experimental Raman Spectra of [Cr(tren)SbS 3 ]·H 2 O
Author(s) -
Möller Karina,
Näther Christian,
Bannwarth Alexander,
Bensch Wolfgang
Publication year - 2007
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.200700378
Subject(s) - denticity , ligand (biochemistry) , molecule , chemistry , raman spectroscopy , crystallography , crystal structure , hydrogen bond , ion , amine gas treating , aqueous solution , thermal decomposition , organic chemistry , biochemistry , physics , receptor , optics
The new charge neutral complex [Cr(tren)SbS 3 ]·H 2 O was synthesized under solvothermal conditions applying CrCl 3 ·6H 2 O, Sb 2 S 3 , and S as starting material in an aqueous tren solution (tren = tris(2‐aminoethyl)amine)). The compound crystallizes in the non‐centrosymmetric space group P2 1 2 1 2 1 with a = 8.7779(15), b = 10.7122(17), c = 15.4286(18) Å, V = 1450.8(4) Å 3 . In the structure the Cr 3+ ion is surrounded by four N atoms of the amine molecules and by two S atoms of a trigonal pyramidal [SbS 3 ] 3− group, i.e., the latter acts as a bidentate ligand. A three‐dimensional network is formed via hydrogen bonds between the complexes and water molecules. The main resonances in the Raman spectrum can be explained on the basis of calculated data. The most intense band is due to the Sb‐S stretching vibration. The thermal properties were investigated by DTA‐TG measurements. On heating [Cr(tren)SbS 3 ]·H 2 O decomposes in two distinct steps. The first step corresponds to the removal of the water molecules and the second step to the loss of the tren ligand.