Competing hydrogen-bond acceptors in ethylenediammonium oxotrithiotungstate(VI)

Abstract

The structure of the title compound, (C(2)H(10)N(2))[WOS(3)], consists of ethylenediammonium dications and tetrahedral [WOS(3)](2-) dianions, which are linked with the aid of four varieties of hydrogen bond, namely N-H...O, N-H...S, C-H...O and C-H...S. The strength and number of these hydrogen bonds affect the W-O and W-S bond distances.

Synthesis and characterization of bis(alkylammonium) tetrasulfidometalates

“…The isostructural bis(n-propylammonium) tetrasulfidometalates crystallize in the centrosymmetric orthorhombic space group Pnma and the structure consists of two crystallographically independent organic cations and a [MS 4 ] 2À with the cations and anions located on mirror planes, resulting in two identical M-S distances in these compounds. This same structural feature of anion and cations lying on mirror planes is observed in K þ , Rb þ , Cs þ , ammonium and methylammonium [MS 4 ] 2À compounds [26,27,[29][30][31][32][33][34][35][36][37], all of which crystallize in the orthorhombic space group Pnma and exhibit two identical M-S distances (table 1). In the bis(alkylammonium) tetrasulfidometalates, the structures of the bis(methylammonium) [29,30] and bis(n-propylammonium) [27] compounds were reported by us.…”

“…The importance of organic tetrasulfidometalates can be evidenced by the usefulness of bis(methylammonium) tetrasulfidotungstate for the acquisition and analysis of natural abundance solid-state 33 S MAS NMR spectra [2]. As part of our research in this area, we are investigating the synthesis, spectral characteristics, thermal properties, and structural aspects of tetrasulfido compounds of Mo and W [6][7][8][9][10]. The research has resulted in a rich structural chemistry of the tetrahedral [MS 4 ] 2À (M ¼ Mo, W) compounds charge balanced by organic ammonium cations [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28].…”

Oxygen out, sulfur in: The alkali metal sulfidotungstates K2[WS4] and novel Na2[WS4] ⋅ 4 H2O

“…Regarding sulfidotungstates(VI), there are a few compounds known to literature, which are rather well investigated, however, only with monovalent countercations. The earliest works comprise structure elucidation of ammonium sulfidotungstate, [2] followed by the derivatives of the larger alkali metals rubidium, [3] cesium [4] and two closely related modifications of Cu 2 [WS 4 ] [5] as coinage metal representatives. Furthermore, a verified plethora of alkylated and arylated ammonium salts according to ( R 1–4 NH 3–0 ) 2 [WS 4 ] ( e. g. R =ethyl, butyl, [6] methylbenzyl, [7] etc.)…”

Structural and Electronic Investigation of Tetrachalcogenidomolybdate Dianions

“…In this study, we sought to examine structure and electronic environment of the four metal‐chalcogen bonds in several [MoS 4 ] 2− and [MoO 2 S 2 ] 2− dianions (Scheme ) by examining the both X‐ray crystal structures determined by X‐ray crystallography and structures derived from DFT calculations. X‐ray crystal structures are known for a wide variety of compounds containing [MoS 4 ],, and [MoO 2 S 2 ] dianions. Despite the utility of (PPh 4 ) 2 [MoS 4 ] in the preparation of bimetallic compounds, and nucleophilic substitution reactions with alkyl halides, its molecular structure has not yet been reported.…”