Solvothermal synthesis and crystal structure of Sb(III) and Sb(V) thioantimonates: [Mn(en)3]2Sb2S5 and [Ni(en)3(Hen)]SbS4

Crystal structure of μ3-tetrathioantimonato-tris[(cyclam)zinc(II)] tetrathioantimonate acetonitrile disolvate dihydrate showing Zn disorder over the cyclam ring planes (cyclam = 1,4,8,11-tetraazacyclotetradecane)

In the crystal structure of the title compound, [Zn(cyclam)]²⁺ cations and SbS₄^3– anions are present, which are linked to aceto­nitrile and water solvate mol­ecules via inter­molecular hydrogen bonding.

Reaction of Zn(ClO₄)₂·6H₂O with cyclam (cyclam = 1,4,8,11-tetra­aza­cyclo­tetra­decane, C₁₀H₂₄N₄) and Na₃SbS₄ in an aceto­nitrile/water mixture led to the formation of crystals of the title compound, [Zn₃(SbS₄)(C₁₀H₂₄N₄)₃](SbS₄)·2CH₃CN·2H₂O or [(Zn-cyclam)₃(SbS₄)₂](H₂O)₂(aceto­nitrile)₂. The set-up of the crystal structure is similar to that of [(Zn-cyclam)₃(SbS₄)₂]^.8H₂O reported recently [Danker et al. (2021 ▸). Dalton Trans. 50, 18107–18117]. The crystal structure of the title compound consists of three crystallographically independent Zn^II cations (each disordered around centers of inversion), three centrosymmetric cyclam ligands, one SbS₄^3– anion, one water and one aceto­nitrile mol­ecule occupying general positions. The aceto­nitrile mol­ecule is equally disordered over two sets of sites. Each Zn²⁺ cation is bound to four nitro­gen atoms of a cyclam ligand and one sulfur atom of the SbS₄^3– anion within a distorted square-pyramidal coordination. The cation disorder of the [Zn(cyclam)]²⁺ complexes is discussed in detail and is also observed in other compounds, where identical ligands are located above and below the [Zn(cyclam)]²⁺ plane. In the title compound, the building units are arranged in layers parallel to the bc plane forming pores in which the aceto­nitrile solvate mol­ecules are located. Inter­molecular C—H⋯S hydrogen bonding links these units to the SbS₄^3– anions. Between the layers, additional water solvate mol­ecules are present that act as acceptor and donor groups for inter­molecular N—H⋯O and O—H⋯S hydrogen bonding.

Synthesis and crystal structure of poly[[di-μ3-tetrathioantimonato-tris[(cyclam)cobalt(II)]] acetonitrile disolvate dihydrate] (cyclam = 1,4,8,11-tetraazacyclotetradecane)

In the crystal structure of the title compound, the [SbS₄]³⁻ anions are linked by the Co(cyclam) complex cations into rings, which are further connected into layers that are linked by inter­molecular hydrogen bonding via the water solvate mol­ecules and are arranged in such a way that cavities are formed, in which the disordered aceto­nitrile solvate mol­ecules are located.

Reaction of Co(ClO₄)₂·6H₂O with cyclam (cyclam = 1,4,8,11-tetra­aza­cyclo­tetra­deca­ne) and Na₃SbS₄·9H₂O (Schlippesches salt) in a mixture of aceto­nitrile and water leads to the formation of crystals of the title compound with the composition {[Co₃(SbS₄)₂(C₁₀H₂₄N₄)₃]·2CH₃CN·2H₂O}_n or {[(Co-cyclam)₃(SbS₄)₂]·2(aceto­nitrile)·2H₂O}_n. The crystal structure of the title compound consists of three crystallographically independent [Co-cyclam]²⁺ cations, which are located on centers of inversion, one [SbS₄]³⁻ anion, one water and one aceto­nitrile mol­ecule that occupy general positions. The aceto­nitrile mol­ecule is disordered over two orientations and was refined using a split model. The Co^II cations are coordinated by four N atoms of the cyclam ligand and two trans-S atoms of the tetra­thio­anti­monate anion within slightly distorted octa­hedra. The unique [SbS₄]³⁻ anion is coordinated to all three crystallographically independent Co^II cations and this unit, with its symmetry-related counterparts, forms rings composed of six Co-cyclam cations and six tetra­thio­anti­monate anions that are further condensed into layers. These layers are perfectly stacked onto each other so that channels are formed in which acetontrile solvate mol­ecules that are hydrogen bonded to the anions are embedded. The water solvate mol­ecules are located between the layers and are connected to the cyclam ligands and the [SbS₄]³⁻ anions via inter­molecular N—H⋯O and O—H⋯S hydrogen bonding.

Synthesis and crystal structure of (1,4,7,10-tetra-aza-cyclo-dodecane-κ4 N)(tetra-sulfido-κ2 S 1,S 4)manganese(II)

The title compound, [Mn(S4)(C8H20N4)], was accidentally obtained by the hydro-thermal reaction of Mn(ClO4)2·6H2O, cyclen (cyclen = 1,4,7,10-tetra-aza-cyclo-dodeca-ne) and Na3SbS4·9H2O in water at 413 K, indicating that polysulfide anions might represent inter-mediates in the synthesis of thio-metallate compounds using Na3SbS4·9H2O as a reactant. X-ray powder diffraction proves that the sample is slightly contaminated with NaSb(OH)6 and an unknown crystalline phase. The crystal investigated was twinned with a twofold rotation axis as the twin element, and therefore a twin refinement using data in HKLF-5 format was performed. The asymmetric unit of the title compound consists of one MnII cation, one [S4]2- anion and one cyclen ligand in general positions. The MnII cation is sixfold coordinated by two cis-S atoms of the [S4]2- anions, as well as four N atoms of the cyclen ligand within an irregular coordination. The complexes are linked via pairs of N-H⋯S hydrogen bonds into chains, which are further linked into layers by additional N-H⋯S hydrogen bonding. These layers are connected into a three-dimensional network by inter-molecular N-H⋯S and C-H⋯S hydrogen bonding. It is noted that only one similar complex with MnII is reported in the literature.

Synthesis and crystal structure of catena-poly[[bis[(2,2';6',2''-terpyridine)-manganese(II)]-μ4-penta-thio-dianti-monato] tetra-hydrate] showing a 1D MnSbS network

In the crystal structure of the title compound, two [Sb₂S₅ [anions built up of two SbS₃ units sharing common corners with each linked by two [Mn(terpyridine)]²⁺ cations into chains that are further linked into a 3D network by inter­molecular O—H⋯O and O—H⋯S hydrogen bonding.

The asymmetric unit of the title compound, {[Mn₂Sb₂S₅(C₁₅H₁₁N₃)₂]·4H₂O}_n, consists of two crystallographically independent Mn^II ions, two unique terpyridine ligands, one [Sb₂S₅]⁴⁻ anion and four solvent water mol­ecules, all of which are located in general positions. The [Sb₂S₅]⁴⁻ anion consists of two SbS₃ units that share common corners. Each of the Mn^II ions is fivefold coordinated by two symmetry-related S atoms of [Sb₂S₅]⁴⁻ anions and three N atoms of a terpyridine ligand within an irregular coordination. Each two anions are linked by two [Mn(terpyridine)]²⁺ cations into chains along the c-axis direction that consist of eight-membered Mn₂Sb₂S4 rings. These chains are further connected into a three-dimensional network by inter­molecular O—H⋯O and O—H⋯S hydrogen bonds. The crystal investigated was twinned and therefore, a twin refinement using data in HKLF-5 [Sheldrick (2015 ▸). Acta Cryst. C71, 3–8] format was performed.

Room temperature synthesis, crystal structure and selected properties of the new compound [Mn2(bipy)4SbS4](ClO4)

The new compound [Mn2(bipy)4SbS4](ClO4) was prepared by a new synthetic route for the preparation of thioantimonates(V) that can be used even at room temperature. Mixing aqueous solutions of [Mn(bipy)3](ClO4)2 and Na3SbS4 · 9H2O leads to immediate crystallization of the pure compound. In the structure an SbS4 3– anion acts as a tetradentate bridge connecting two Mn2+ cations of [Mn(bipy)3]2+ complexes (bipy = 2,2′-bipyridine). The compound features a hitherto unknown [Mn2(bipy)4SbS4]+ cation. Bipy ligands of adjacent cations are arranged parallel to each other leading to weak off-center parallel π-π interactions stabilizing the crystals. Magnetic measurements indicate weak antiferromagnetic exchange interactions between the Mn2+ centers.

Two manganese–amine complexes incorporating thioantimonates and exhibiting diversiform roles of amine ligands

Two manganese–amine complexes incorporating thioantimonates with diversiform structure-directing actions of the amine ligands have been synthesized and characterized.

Two polymorphs of tris(ethylenediamine)cobalt(III) tetrathioantimonate(V)

Details of the structures of two polymorphs of tris(ethylenediamine)cobalt(III) tetrathioantimonate(V), [Co(C₂H₈N₂)₃][SbS₄], are reported. The first polymorph crystallizes in the orthorhombic space group Pna2₁, whereas the second polymorph belongs to the tetragonal space group P4₂bc. Both structures contain octahedral [Co(en)₃]³⁺ cations (en is ethylenediamine) and tetrahedral [SbS₄]³⁻ anions, which are interconnected via various N-H∙∙∙S hydrogen bonds to form two different types of three-dimensional network.

The First Example of Solvothermally Synthesized Thioantimonates(V) with Ethylenediamine Coordinated Lanthanide(III): [Sm(en)4]SbS4·0.5en and [Sm(en)3(H2O)(μ-SbS4)]∞

Under mild solvothermal conditions two novel thioantimonates(V) [Sm(en)4]SbS4 x 0.5en (1) and [Sm(en)3(H2O)(micro-SbS4)]infinity (2) were synthesized; the structure of 1 contains discrete [Sm(en)4]3+ and [SbS4]3 ions, while 2 consists of neutral [Sm(en)3(H2O) (micro-SbS4)] one-dimensional chains.