trans-Chloridobis­(ethane-1,2-di­amine-κ²N,N′)(thio­cyanato-κN)cobalt(III) diammine­tetra­kis­(thio­cyanato-κN)cromate(III)

The title ionic complex [CoCl(NCS)(C₂H₈N₂)₂][Cr(NCS)₄(NH₃)₂], which crystallizes as a non-merohedral twin, is build up of a complex cation [CoCl(NCS)(en)₂]⁺ (en is ethane-1,2-di­amine) and the Reinecke's salt anion [Cr(NCS)₄(NH₃)₂]⁻ as complex counter-ion. A network of N—H...S and N—H...Cl hydrogen bonds, as well as short S...S contacts [3.538 (2) and 3.489 (3) Å], between the NCS groups of the complex anions link the mol­ecules into a three-dimentional supra­molecular network. Intensity statistic indicated twinning by non-mero­hedry with refined weighs of twin components are 0.5662:0.4338.

Chlorido­bis­(1,10-phenanthroline-κ²N,N′)copper(II) chlorido­(1,10-phen­anthroline-κ²N,N′)(pyridine-2,6-di­carboxyl­ato-κ³O²,N,O⁶)manganate(II) methanol monosolvate

The title complex, [CuCl(C₁₂H₈N₂)₂][Mn(C₇H₃NO₄)Cl(C₁₂H₈N₂)]·CH₃OH, consists of discrete [CuCl(phen)₂]⁺ cations (phen is 1,10-phenanthroline), [MnCl(pydc)(phen)]⁻ anions (H₂pydc is 2,6-pyridine-2,6-di­carb­oxy­lic acid) and one methanol solvent mol­ecule of crystallization per asymmetric unit. It should be noted, that a solvent-masking procedure as implemented in OLEX2 [Dolomanov et al. (2009). J. Appl. Cryst. 42, 339–341] was used to remove the electronic contribution from one disordered solvent molecule, presumably methanol. Only the atoms used in the refined model are reported in chemical formula and related values. The Cu^II ion is five-coordinated by two phenanthroline ligands and one chloride ion in a distorted trigonal–bipyramidal geometry. The dihedral angle between the phen ligands is 65.21 (5)°. The Mn^II ion is six-coordinated by one Cl atom, two N atoms from a phen ligand, as well one N atom and two O atoms from pydc in a distorted octa­hedral coordination geometry, with cis angles ranging from 72.00 (8) to 122.07 (8)° and trans angles ranging from 143.98 (8) to 163.15 (6)°. In the crystal, C—H...O, O—H...O and C—H...Cl hydrogen bonds, cation–anion π–π inter­actions between the phen ring systems with centroid–centroid distances in the range 3.881 (34)–4.123 (36) Å, as well as cation–cation, anion–anion π–π inter­actions between the phen rings with centroid–centroid distances in the range 3.763 (4)–3.99 (5) Å and pydc rings with centroid–centroid distances 3.52 (5) Å link the various components.

Poly[[tri-μ-aqua-do­deca­aqua­tris­(μ₃-1-hy­droxy­ethyl­idene-1,1-di­phospho­nato)tricalcium(II)tripalladium(II)] penta­hydrate]

The asymmetric unit of the title compound, {[CaPd{CH₃OHC(PO₃)₂}(H₂O)₅]·5/3H₂O}_n, consists of one half of the complex [Pd{CH₃OHC(PO₃)₂}]²⁻ anion (point group symmetry m..), one Ca²⁺ cation [site symmetry (.2.)] that is surrounded by three water mol­ecules (one of which is on the same rotation axis) and by three disordered lattice water mol­ecules. The anions form a trinuclear metallocycle around a crystallographic threefold rotation axis. The cations are related by a twofold rotation axis to form a [Ca₂(H₂O)₁₀]²⁺ dimer. The slightly distorted square-planar coordination environment of the Pd^II atoms in the complex anions is formed by O atoms of the bidentate chelating phospho­nate groups of the 1-hy­droxy­ethyl­idene-1,1-di­phospho­nate ligands. In the crystal, cations are bound to anions through —Ca—O—P—O— bonds, as well as through O—H...O hydrogen bonds, resulting in a three-dimensional polymer. The structure is completed by five disordered solvent mol­ecules localized in cavities within the framework.