Stereochemical aspects of phosphor-1,1-dithiolato metal complexes (dithiophosphates, dithiophosphinates): Coordination patterns, molecular structures and supramolecular associations—I

Bismuth(III) dimethyldithioarsinate, Bi(S2AsMe2)3: A new dimer formed through Bi ? S secondary bonding

“…This suggests that coordination patterns analogous to those identified for dithiophosph(in)ates [1,2], that is, monometallic monoconnective [monodentate (1)], monometallic biconnective [isobidentate (2) or anisobidentate (3)], bimetallic biconnective (4), or bimetallic triconnective (5), can also be expected for dithioarsinates. Dimeric bismuth(III) dithioarsinate Bi(S 2 AsMe 2 ) 3 displays the first authenticated (by X-ray diffraction) example of the bimetallic triconnective coordination pattern (5) (Scheme 1).…”

“…In (organo)metal dithiophosph(in)ato complexes, R n M(S 2 ) m , (n ‫ס‬ 0, 1, 2, 3; RЈ ‫ס‬ alkyl, aryl, alkoxo, PRЈ 2 aryloxo) the ligands are known to display a broad variety of coordination patterns [1,2], and small changes in the peripheral groups may produce dramatic structural changes in analogous compounds of the same general formula, in which only RЈ is different [3,4]. In view of this, it seems of interest to see what effects the replacement of phosphorus for arsenic in the ligand would have and therefore to com-*To whom correspondence should be addressed.…”

“…S secondary bonds. With these considerations in mind, we initiated a program of syntheses and structural investigations of dithioarsinato (organo)metal complexes, aiming at comparing the structures of compounds of general formula R n M(S 2 ) m with E ‫ס‬ P and As. In fact, we have ERЈ 2 previously prepared and spectroscopically characterized some main group (organo)metal dithioarsinates [14][15][16], and we intend to determine the FIGURE 2 The structure of the dimer, showing the association of two monomeric units through secondary interactions.…”

Synthesis and spectroscopic characterization of dimethyl/di(n‐butyl)tin(IV)bis(O,O′‐ditolyl dithiophosphate) complexes. Crystal structures of Me2Sn[S2P(OC6H4Me‐o)2]2 and n‐Bu2Sn[S2P(OC6H4Me‐o)2]2

“…Reactions of dimethyl/di(n-butyl)tin(IV) dichloride with ammonium salts of (9) • in the X-ray structure determination. Coupling constant values for compounds 4-6 could not be interpreted from the spectra due to the complexity of the methylene multiplets of the n-butyl group.…”

“…Studies over the last few decades have consistently shown interest in the versatility of bonding modes of metals with sulfur-containing ligands, including those on a variety of dithio ligating systems of tin with O,O -dialkyl dithiophosphates 1 -10 and O,Oalkylene dithiophosphate, 11 -14 for which monodentate, 1,9,10 anisobidentate as well as bidentate 4,9,10 forms have been reported. The biocidal importance 15 of organotin moieties as well as organophosphorus compounds is well known.…”