Bis[O-propan-2-yl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ²S,S′]nickel(II)

The title compound, [Ni(C₁₁H₁₆O₂PS₂)₂], is a neutral four-coordinate mononuclear complex with a square-planar geometry. The complex lies on an inversion center. The metal atom is surrounded by two chelating isobidentate O-propan-2-yl (4-eth­oxy­phen­yl)dithio­phospho­nate ligands in a trans configuration binding through the S-donor atoms. The Ni—S bond lengths are 2.2328 (5) and 2.2369 (5) Å, an insignificant difference to be considered anisobidentate. The Ni...P separation is 2.8224 (5) Å and the S—P bond lengths are 2.0035 (7) and 2.0053 (7) Å. The S—Ni—S (chelating) and S—Ni—S (trans) bond angles are 88.321 (18) and 180°. The Ni—S—P bond angles are 83.26 (2) and 83.33 (2)°, indicating a very minor distortion from ideal square-planar geometry for the Ni atom. The P atom, however, is distorted quite significantly from an ideal tetra­hedral geometry, as reflected by the S—P—S and O—P—C bond angles of 101.93 (3) and 100.70 (7)°, respectively.

Bis[O-methyl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ²S,S′]nickel(II)

In the title compound, [Ni(C₉H₁₂O₂PS₂)₂], the Ni^II atom resides on an inversion center and is coordinated by four S atoms [Ni—S = 2.2328 (4) and 2.2455 (3) Å] in a distorted square-planar geometry [S—Ni—S = 88.443 (13) and 91.557 (13)°]. In the crystal, mol­ecules related by translation in [110] are linked into chains via weak C—H...O inter­actions. The crystal packing exhibits short inter­molecular S...S contacts of 3.3366 (5) Å.

Bis[μ-O-isopropyl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ²S:S′]bis­{[O-iso­propyl (4-eth­oxy­phen­yl)dithio­phos­phonato-κ²S,S′]mercury(II)}

The title compound, [Hg₂(C₁₁H₁₆O₂PS₂)₄], is a dinuclear complex with a distorted tetra­hedral geometry around each Hg^II atom. Although the two Hg^II atoms are surrounded by the same ligand, two different coordination modes are observed: one is chelating and the other bridging. The Hg—S bonds form two distinct pairs of long and short bonds. One pair includes both chelating and bridging Hg—S bonds with approximately equal bond lengths of 2.4042 (8) and 2.3997 (7) Å, respectively. The other pair is significantly longer at 2.9361 (9) and 2.8105 (8) Å, respectively. This pattern forms a center of inversion through the mol­ecule with an equal and opposite effect occurring at the other Hg^II atom. The S—Hg—S angles vary widely from 76.26 (2) to 154.65 (3)°, indicative of a distorted tetra­hedral arrangement of the S atoms around the Hg^II atom. The P—S bond lengths are 1.9681 (10) and 2.0519 (11)°, clearly indicating partial double-bond character in the former. The mol­ecule contains an inversion center situated between the two Hg^II atoms.

Bis[O-isopropyl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ²S,S′]lead(II)

The title compound, [Pb(C₁₁H₁₆O₂PS₂)₂], is a neutral four-coordinate mononuclear complex with a distorted square-pyramidal geometry of the PbS₄ core. The apical Pb^II atom of each pyramid is 1.33059 (3) Å above the basal S₄ plane. The metal atom is surrounded by two chelating dithio­phospho­nate ligands binding through the S-donor atoms. The ligands are anisobidentate as the pyramid is comprised of Pb—S bond lengths that vary substanti­ally [2.6999 (7), 2.7128 (6), 2.8877 (7) and 2.9472 (7) Å], clearly indicating two short and two longer bond lengths. The P—S bond lengths are also paired as shorter [1.9959 (9) and 1.9877 (8) Å] and slightly longer [2.0115 (9) and 2.0245 (9) Å], indicating an anisobidentate nature of the ligand whereby the shorter P—S bond has more double-bond character than the other. The S—Pb—S (chelating) bond angles range from 71.841 (18) to 72.692 (19)°, whilst the Pb—S—P bond angles range from 84.70 (3) to 90.51 (3)°.

Bis[O-propyl (4-eth­oxy­phen­yl)dithio­phospho­nato-κ²S,S′]nickel(II)

The title compound, [Ni(C₁₁H₁₆O₂PS₂)₂], contains a four-coordinate Ni^II cation with an idealized square-planar geometry. The metal atom is surrounded by two chelating isobidentate dithio­phospho­nate ligands in a trans or anti configuration, binding through the S-donor atoms.

2-[(4-Bromo­benzyl­idene)amino]­ethanol

In the crystal structure of the title compound, C₉H₁₀BrNO, molecules are linked via O—H...N hydrogen bonds of a moderate strength between the hy­droxy groups and the imine N atoms. These hydrogen bonds, as well as the planes of the bromo­phenyl rings, are situated in alternating planes parallel to (013) and (0-13). In addition, there are weak C—H...π inter­actions in the structure.