The conformations of two copper(I) complexes of 1H-benzimidazole-2(3H)-thione and thio­saccharinate

(Acetonitrile-1κN)[μ-1H-benzimidazole-2(3H)-thione-1:2κ²S:S][1H-benzimidazole-2(3H)-thione-2κS]bis­(μ-1,1-dioxo-1λ⁶,2-benzothia­zole-3-thiol­ato)-1:2κ²S³:N;1:2κ²S³:S³-dicopper(I)(Cu—Cu), [Cu₂(C₇H₄NO₂S₂)₂(C₇H₆N₂S)₂(CH₃CN)] or [Cu₂(tsac)₂(Sbim)₂(CH₃CN)] [tsac is thio­saccharinate and Sbim is 1H-benzimidazole-2(3H)-thione], (I), is a new copper(I) compound that consists of a triply bridged dinuclear Cu—Cu unit. In the complex mol­ecule, two tsac anions and one neutral Sbim ligand bind the metals. One anion bridges via the endocyclic N and exocyclic S atoms (μ-S:N). The other anion and one of the mercaptobenzimidazole mol­ecules bridge the metals through their exocyclic S atoms (μ-S:S). The second Sbim ligand coordinates in a monodentate fashion (κS) to one Cu atom, while an acetonitrile mol­ecule coordinates to the other Cu atom. The Cu^I—Cu^I distance [2.6286 (6) Å] can be considered a strong `cuprophilic' inter­action. In the case of [μ-1H-benzimidazole-2(3H)-thione-1:2κ²S:S]bis­[1H-benzimidazole-2(3H)-thione]-1κS;2κS-bis­(μ-1,1-dioxo-1λ⁶,2-benzo­thia­zole-3-thiol­ato)-1:2κ²S³:N;1:2κ²S³:S³-dicopper(I)(Cu—Cu), [Cu₂(C₇H₄NO₂S₂)₂(C₇H₆N₂S)₃] or [Cu₂(tsac)₂(Sbim)₃], (II), the acetonitrile mol­ecule is substituted by an additional Sbim ligand, which binds one Cu atom via the exocylic S atom. In this case, the Cu^I—Cu^I distance is 2.6068 (11) Å.

A triclinic polymorph of cyclo-tetra-μ-thio­saccharinato-κ⁸S:S-tetra­kis[(triphenyl­phosphane-κP)silver(I)]

The triclinic structure of the title compound, cyclo-tetra­kis­(μ-1,1-dioxo-1λ⁶,2-benzothia­zole-3-thiol­ato-κ²S:S)tetra­kis­[(triphenyl­phosphane-κP)silver(I)], [Ag₄(C₇H₄NO₂S₂)₄(C₁₈H₁₅P)₄], is a polymorph of the previously reported monoclinic structure [Dennehy, Mandolesi, Quinzani & Jennings (2007). Z. Anorg. Allg. Chem. 633, 2746–2752]. In both polymorphs, the complex lies on a crystallographic inversion centre and the bond distances are closely comparable. Some differences can be found in the inter­atomic angles and torsion angles involving the inner Ag₄S₄ skeleton. The polymorphs contain essentially identical two-dimensional layers, but with different layer stacking arrangements. In the triclinic form, all layers are related by lattice translation, while in the monoclinic form they are arranged around glide planes so that adjacent layers are mirrored with respect to each other.

Aripiprazole salts. I. Aripiprazole nitrate

The crystal structure of aripiprazole nitrate (systematic name: 4-(2,3-dichloro­phen­yl)-1-{4-[(2-oxo-1,2,3,4-tetra­hydro­quino­lin-7-yl)­oxy]but­yl}piperazin-1-ium nitrate), C₂₃H₂₈Cl₂N₃O₂⁺·NO₃^- or AripH⁺·NO₃^-, is presented and the mol­ecule com­pared with the aripiprazole molecules reported so far in the literature. Bond distances and angles appear very similar, except for a slight lengthening of the C-NH distances involving the protonated N atom, and the main differences are to be found in the mol­ecular spatial arrangement (revealed by the sequence of torsion angles) and the inter­molecular inter­actions (resulting from structural elements specific to this structure, viz. the nitrate counter-ions on one hand and the extra protons on the other hand as hydrogen-bond acceptors and donors, respectively). The result is the formation of [100] strips, laterally linked by weak [pi]-[pi] and C-Cl...[pi] inter­actions, leading to a family of undulating sheets parallel to (010).

Aripiprazole salts. II. Aripiprazole perchlorate

The mol­ecular structure of aripiprazole perchlorate (systematic name: 4-(2,3-dichloro­phenyl)-1-{4-[(2-oxo-1,2,3,4-tetra­hydro­quinolin-7-yl)­oxy]­butyl}­piperazin-1-ium perchlor­ate), C₂₃H₂₈Cl₂N₃O₂⁺·ClO₄^-, does not differ substantially from the recently published structure of aripiprazole nitrate [Freire, Polla & Baggio (2012). Acta Cryst. C68, o170-o173]. Both compounds have almost identical bond distances, bond angles and torsion angles. The two different counter-ions occupy equivalent places in the two structures, giving rise to very similar first-order `packing motifs'. However, these elemental arrangements inter­act with each other in different ways in the two structures, leading to two-dimensional arrays with quite different organizations.

Monodentate and bridging behaviour of the sulfur-containing ligand 4′-[4-(methyl­sulfan­yl)phen­yl]-4,2′:6′,4′′-terpyridine in two discrete zinc(II) complexes with acetyl­acetonate

The Zn complexes bis­(acetyl­acetonato-κ²O,O′)bis­{4′-[4-(methyl­sulfan­yl)phen­yl]-4,2′:6′,4′′-terpyridine-κN¹}zinc(II), [Zn(C₅H₇O₂)₂(C₂₂H₁₇N₃S)₂], (I), and {μ-4′-[4-(methyl­sulfan­yl)phen­yl]-4,2′:6′,4′′-terpyridine-κ²N¹:N^1′′}bis­[bis­(acetyl­acetonato-κ²O,O′)zinc(II)], [Zn₂(C₅H₇O₂)₄(C₂₂H₁₇N₃S)], (II), are discrete entities with different nuclearities. Compound (I) consists of two centrosymmetrically related monodentate 4′-[4-(methyl­sul­fan­­yl)phen­yl]-4,2′:6′,4′′-terpyridine (L1) ligands binding to one Zn^II atom sitting on an inversion centre and two centro­symmetrically related chelating acetyl­acetonate (acac) groups which bind via carbonyl O-atom donors, giving an N₂O₄ octa­hedral environment for Zn^II. Compound (II), however, consists of a bis-monodentate L1 ligand bridging two Zn^II atoms from two different Zn(acac)₂ fragments. Intra- and inter­molecular inter­actions are weak, mainly of the C—H...π and π–π types, mediating similar layered structures. In contrast to related structures in the literature, sulfur-mediated nonbonding inter­actions in (II) do not seem to have any significant influence on the supra­molecular structure.