Poly[tetra­aquadi‐μ3‐malonato‐cobalt(II)­calcium(II)]

The structure of the polymeric title compound, [CaCo(C₃H₂O₄)₂(H₂O)₄]_n, consists of CaO₈ and CoO₆ polyhedra linked together by malonate groups. The Co atom lies on a centre of symmetry in an octa­hedral arrangement, and is coordinated by four malonate O atoms in a planar arrangement and two water mol­ecules in a trans conformation. The geometry around the Ca atom, which lies on a twofold axis, may be described as a distorted square anti­prism, which involves two water mol­ecules and six malonate O atoms. The Co—O and Ca—O bond lengths are in the ranges 2.0711 (12)–2.1004 (14) and 2.3775 (12)–2.6329 (12) Å, respectively.     

Two novel glycine metal halogenides: catena‐poly[[[diaqua­nickel(II)]‐di‐μ‐glycine] dibromide] and catena‐poly[[[tetra­aqua­magnesium(II)]‐μ‐glycine] dichloride]

In catena‐poly[[[diaqua­nickel(II)]‐di‐μ‐glycine] dibromide], {[Ni(C₂H₅NO₂)₂(H₂O)₂]Br₂}_n, (I), the Ni atom is located on an inversion centre. In catena‐poly[[[tetra­aqua­magnesium(II)]‐μ‐glycine] dichloride], {[Mg(C₂H₅NO₂)(H₂O)₄]Cl₂}_n, (II), the Mg atom and the non‐H atoms of the glycine mol­ecule are located on a mirror plane. All other atoms are located on general positions. The atomic arrangements of both compounds are characterized by [MO₆] octa­hedra (M = Ni or Mg) connected by glycine mol­ecules, with the halogenide ions in the inter­stices. In (I), four of the coordinating O atoms are from glycine and two are from water mol­ecules, building layers of octa­hedra and organic mol­ecules. In (II), two of the coordinating O atoms are from glycine and four are from water mol­ecules. The octa­hedra and organic mol­ecules form chains.     

Poly[[μ‐aqua‐bis­(μ‐2,4‐dichloro­phen­oxy­acetato)barium(II)] monohydrate]

In the title coordination polymer, {[Ba(C₈H₅Cl₂O₃)₂(H₂O)]·H₂O}_n, each Ba^II atom is nine‐coordinated by six carboxyl­ate O atoms and one ether O atom from five symmetry‐related 2,4‐dichloro­phenoxy­acetate ligands, and by two O atoms from water mol­ecules, thus defining a distorted tricapped trigonal prism. The Ba^II ions are bridged by bidentate water mol­ecules and by tridentate and tetra­dentate 2,4‐dichloro­phenoxy­acetate groups, leading to a two‐dimensional layer structure. The crystal structure is further stabilized by hydrogen‐bonding inter­actions within each layer.     

Poly[tetra­aqua­di‐μ3‐malonato‐calcium(II)­zinc(II)]

The title complex, [CaZn(C₃H₂O₄)₂(H₂O)₄]_n, is a two‐dimensional polymer and consists of CaO₈ and ZnO₆ polyhedra linked together by malonate ligands. The Ca^II cation, lying on a twofold axis, is coordinated by two water mol­ecules and six malonate O atoms. The Zn^II cation, which lies on an inversion center in an octa­hedral environment, is coordinated by four malonate O atoms in an equatorial arrangement and two water mol­ecules in axial positions. The Zn—O and Ca—O bond lengths are in the ranges 2.0445 (12)–2.1346 (16) and 2.3831 (13)–2.6630 (13) Å, respectively. The structure comprises alternating layers along the [101] plane, the shortest Zn⋯Zn distance being 6.8172 (8) Å. The whole three‐dimensional structure is maintained and stabilized by the presence of hydrogen bonds.     

Di­aqua­bis­[μ‐(R,R)‐tartrato‐κ4O1,O2:O3,O4]­dinickel(II) trihydrate

In the crystal structure of the title compound, [Ni₂(C₄H₄O₆)₂(H₂O)₂]·3H₂O, two nickel cations, two tartrate anions and two water mol­ecules form the dimeric complex. Each nickel cation is in a distorted octahedral environment composed of four O atoms of two crystallographically independent tartrate anions, one water mol­ecule and one O atom of a symmetry‐equivalent tartrate anion. The asymmetric unit contains three additional water mol­ecules which are connected via hydrogen bonding.     

Poly[μ‐aqua‐diaqua‐μ4‐malonato‐μ3‐malonato‐barium(II)nickel(II)]

The title complex, [BaNi(C₃H₂O₄)₂(H₂O)₃]_n, is polymeric, with two non‐equivalent malonate dianions bridging one Ni atom and five different Ba atoms. The Ni atoms have a distorted octahedral (NiO₆) environment, and are coordinated by four malonate O atoms in a planar arrangement and two water molecules in axial positions. The Ba atom may be described as a BaO₉ polyhedron in a monocapped square‐antiprismatic environment, which involves two water molecules and seven O atoms from different malonate ligands. The three‐dimensional structure is further maintained and stabilized by hydrogen bonds.     

Diaqua­malonato(1,10‐phenanthro­line)­zinc(II)

In the crystal structure of the title complex, [Zn(C₃H₂O₄)(C₁₂H₈N₂)(H₂O)₂], the Zn^II atom displays a distorted octa­hedral geometry, being coordinated by two N atoms from the 1,10‐phenanthroline ligand, two O atoms from different carboxyl­ate groups of the chelating malonate dianion and two O atoms of cis water mol­ecules. The complex mol­ecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding inter­actions between coordinated water molecules and the uncoordinated carboxyl­ate O atoms of neighboring mol­ecules, and aromatic π–π stacking inter­actions between neighboring phenanthroline rings.     

μ‐3,4′‐Bi‐1,2,4‐triazole‐di‐μ‐chloro‐cuivre(II) monohydraté

In the title compound, μ‐3,4′‐bi‐1,2,4‐triazole‐di‐μ‐chloro‐copper(II) monohydrate, {[CuCl₂(C₄H₄N₆)]·H₂O}_n, the Cu atom is located in a distorted octahedron consisting of two N atoms and four Cl atoms. The structural unit is an infinite chain in which octahedral groups, connected by shared edges, are also linked by bitriazole mol­ecules. The bitriazole ligand, the Cu atom and the water O atom all lie on independent twofold axes. The structure is held together by hydrogen bonds between the water mol­ecules and the non‐coordinated N atoms of the ligand, and by van der Waals forces.     

Di‐μ‐aqua‐bis­[(N‐salicyl­idene‐β‐alaninato‐κ3O,N,O′)copper(II)] urea disolvate

Crystals of the title compound, [Cu₂(C₁₀H₉NO₃)₂(H₂O)₂]·2CH₄N₂O, consist of two (N‐salicyl­idene‐β‐alaninato‐κ³O,N,O′)copper(II) coordination units bridged by two water moieties to form a dimer residing on a crystallographic inversion center, along with two uncoordinated urea mol­ecules. The Cu^II atom has square‐pyramidal coordination, with three donor atoms of the tridentate Schiff base and an O atom of the bridging aqua ligand in the basal plane. The axial position is occupied by the second bridging water ligand at a distance of 2.5941 (18) Å. Hydro­gen bonds between mol­ecules of urea and the neighboring dimer units lead to the formation of a two‐dimensional grid of mol­ecules parallel to [101]. The superposition of the normals of the pyramidal base planes in the direction [100] indicates possible π–π interactions between the neighboring units.     

Di­aqua(2,2′‐bi­pyridine)­malonato­manganese(II)

In the crystal structure of the title compound, [Mn(C₃H₂O₄)(C₁₀H₈N₂)(H₂O)₂], the Mn^II atom demonstrates a distorted octahedral geometry, being coordinated by two N atoms of a 2,2′‐bi­pyridine ligand, two O atoms from the carboxyl­ate groups of the chelating malonate dianion and two O atoms of two cis water mol­ecules. The complex mol­ecules are linked to form a three‐dimensional supramolecular array by both hydrogen‐bonding interactions between coordinated water and the carboxyl­ate groups of neighboring mol­ecules and aromatic π–π‐stacking interactions of the bi­pyridine rings.     

catena‐Poly[[aqua­bis(1H‐benzimidazole‐κN3)manganese(II)]‐μ‐adipato]

In the title polymeric complex, [Mn(C₆H₈O₄)(C₇H₆N₂)₂(H₂O)]_n, the Mn^II atom is surrounded by two adipate dianions, two benzimidazole mol­ecules and one coordinated water mol­ecule. The Mn atoms and coordinated water mol­ecule are located on a twofold axis, and the bridging adipate ligand is located on an inversion center. The adipate dianions bridge neighboring Mn^II atoms to form polymeric chains. Each Mn^II atom is seven‐coordinate, the longest Mn—O bond length being 2.5356 (16) Å.     

catena‐Poly[tris(ethylenediamine‐κ2N,N′)nickel(II) [[trithiocyanato‐κ3N‐sodium(I)]‐μ‐aqua‐κ2O:O]]

The title complex, {[Ni(C₂H₈N₂)₃][Na(NCS)₃(H₂O)]}_n, con­sists of discrete [Ni(en)₃]²⁺ dications (en is ethyl­enedi­amine) and polymeric [(H₂O)_0.5Na(NCS)₃(H₂O)_0.5]_n^2n? anions. The compound crystallizes in space group Pc1. The Ni^II atom lies on a threefold axis and has a distorted octahedral coordination geometry. The Na⁺ cation also lies on a site with imposed crystallographic threefold symmetry and is coordinated by the thio­cyanate N atoms (the thio­cyanates are in general posi­tions), by one water mol­ecule with crystallographically imposed 32 symmetry and by a second water mol­ecule with crystallographically imposed symmetry. The unique Na atom thus has trigonal–bipyramidal coordination. The O atoms of the water mol­ecules bridge the Na⁺ cations to form one‐dimensional polymeric chains in the crystal structure. The [Ni(en)₃]²⁺ dications are distributed around and between the chains and are linked to them via N—H?S hydrogen bonds.     

Poly[tetraaquadi‐μ4‐malonato‐barium(II)zinc(II)]

The title complex, [BaZn(C₃H₂O₄)₂(H₂O)₄]_n, is polymeric, due to the connectivity brought about by each malonate dianion bonding to two different Zn^II cations and two different Ba^II cations. The Ba^II cations, on crystallographic twofold axes, have slightly distorted square‐anti­prismic coordination, with Ba—O distances ranging from 2.795 (2) to 2.848 (2) Å. The Zn^II cations, which lie on crystallographic centres of symmetry, have distorted octa­hedral coordination, with Zn—O bonds in the range 2.0364 (19)–2.3248 (18) Å. The water mol­ecules participate in extensive O—H⋯O hydrogen bonding. The structure comprises alternating layers along [100], with one type containing Zn^II cations and malonate dianions, while the other is primarily composed of Ba^II cations and water mol­ecules.     

Bis(μ‐3‐nitrobenzene‐1,2‐dicarboxyl­ato)‐κ8O1,O2:O2,O3;O3,O2:O2,O1‐bis­[triaqua­(2‐carboxy‐3‐nitro­benzoato‐κ2O,O′)lanthanum(III)] dihydrate

The title compound, [La₂(C₈H₃NO₆)₂(C₈H₄NO₆)₂(H₂O)₆]·2H₂O, consists of dimeric units related by an inversion center. The two La^III atoms are linked by two bridging bidentate carboxyl­ate groups and two monodentate carboxyl­ate groups. Each La^III atom is nine‐coordinated by six O atoms from five different carboxyl­ate groups and three from water mol­ecules. Hydrogen bonds between the water mol­ecules and between the solvent water and a carboxyl­ate O atom are observed in the structure. In the crystal packing, there are slipped π–π stacking inter­actions between the parallel benzene rings. Both hydrogen‐bonding and π–π inter­actions combine to stabilize the three‐dimensional supra­molecular network.     

A one‐dimensional coordination polymer with metal–metal inter­actions: catena‐poly­[[tri­aqua­barium(II)]‐μ‐aqua‐κ2O:O‐di‐μ‐thio­salicyl­ato‐κ4O:O]

In the title compound, [Ba(C₇H₅O₂S)₂(H₂O)₄]_n, the Ba^II atom lies on a mirror plane and is nine‐coordinated by four bridging carboxylate O atoms of the thio­salicyl­ate ligands, two bridging water mol­ecules and three terminal water mol­ecules. There is an intramolecular S—H⋯O hydrogen bond between the S and O atoms in the thio­salicyl­ate ligand. A one‐dimensional coordination polymer is formed via weak metal–metal interactions along polymeric zigzag chains.     

Di‐μ‐sulfido‐bis[diaqua(18‐crown‐6)­barium(II)]–saccharin (1/2)

The mol­ecule of the title compound {systematic name: di‐μ‐sulfido‐bis[di­aqua(1,4,7,10,13,16‐hexaoxa­cyclo­octade­cane‐κ⁶O)barium(II)] bis­[1,2‐benzisothiazol‐3(2H)‐one 1,1‐dioxide]}, [Ba₂S₂(C₁₂H₂₄O₆)₂(H₂O)₄](C₇H₅NO₃S)₂, lies on an inversion centre. The Ba^II atom encapsulated by the 18‐crown‐6 ring is coordinated by the six O atoms of the crown, two water O atoms and two bridging S atoms. The four‐membered ring composed of the Ba^II atoms and the bridging S atoms makes a dihedral angle of 67.1 (1)° with the crown‐ether ring. The aromatic ring system of the saccharin moiety is essentially planar. The packing is built up from layers of the mol­ecules and is stabilized by three intermolecular O—H?O hydrogen bonds.     

Diaquabis(1,3‐propanediamine‐κ2N,N′)nickel(II) bis(sulfanilate)

The title compound, [Ni(C₃H₁₀N₂)₂(H₂O)₂](C₆H₆NO₃S)₂, contains alternating layers of sulfanilate anions and di­aqua­bis(1,3‐propane­di­amine)­nickel(II) cations. The Ni atom lies on an inversion centre and is hexacoordinated by the 1,3‐propane­di­amine ligands, which function as N,N′‐bidentate ligands, and the water mol­ecules, which are in a trans arrangement. The sulfanilate anions are arranged in layers, with the sulfonate and amine groups directed towards opposite sides of the layer. The structure is stabilized by a network of hydrogen bonding between the O and N atoms of the sulfanilate anions, the water mol­ecules, and the N atoms of the 1,3‐propane­di­amine ligands.     

Bis(μ‐diphenyl­phosphinato‐κ2O:O′)bis­[aqua­(diphenyl­phosphinato‐κO)bis­(pyridine‐κN)cobalt(II)]

In the centrosymmetric title compound, [Co₂(C₁₂H₁₀O₂P)₄(C₅H₅N)₄(H₂O)₂], each approximately octa­hedral Co atom features two trans‐coordinated pyridine mol­ecules, one water mol­ecule, a terminally coordinated monodentate diphenyl­phosphinate ligand, and two bidentate diphenyl­phosphinate ligands that bridge the two Co atoms across a centre of inversion to form a dimeric binuclear complex. The discrete mol­ecules are linked by double hydrogen bonds between the terminally coordinated diphenyl­phosphinate ligand and the water mol­ecule to form a continuous chain along the crystallographic b axis.     

catena‐Poly[[[tetra­aqua­zinc(II)]‐μ‐4,4′‐bipyridine] bis­(4‐hydroxy­benzene­sulfonate) trihydrate]

In the title compound, {[Zn(C₁₀H₈N₂)(H₂O)₄](C₆H₅O₄S)₂·3H₂O}_n, the Zn atom, the bipyridine ligand and one of water mol­ecules are located on twofold rotation axes. The Zn atom is coordinated by four O atoms from four water mol­ecules and two N atoms from two 4,4′‐bipyridine mol­ecules in a distorted octa­hedral geometry. The Zn²⁺ ions are linked by the 4,4′‐bipyridine mol­ecules to form a one‐dimensional straight chain propagating along the c axis. The 4‐hydroxy­benzene­sulfonate counter‐ions are bridged by the solvent water mol­ecules through hydrogen bonds to generate a two‐dimensional layer featuring large pores. In the crystal packing, the intra­layer pores form one‐dimensional channels along the c axis, in which the one‐dimensional [Zn(C₁₀H₈N₂)(H₂O)₄]²⁺ chains are encapsulated. Electrostatic inter­actions between cations and anions and extensive hydrogen bonds result in a three‐dimensional supra­molecular structure.     

Diaqua­bis[5‐(pyrazin‐2‐yl‐κN1)‐1H‐tetra­zolato‐κN1]manganese(II) and diaqua­bis[5‐(pyrazin‐2‐yl‐κN1)‐1H‐tetra­zolato‐κN1]zinc(II)

The two new title complexes, [Mn(C₅H₃N₆)₂(H₂O)₂] and [Zn(C₅H₃N₆)₂(H₂O)₂], are isomorphous. In both compounds, the metal atom is located on an inversion center and is coordinated by four N atoms from two 5‐(pyrazin‐2‐yl)‐1H‐tetra­zolate anions in the basal plane and by two O atoms of water ligands in the apical positions to form a distorted octa­hedral geometry. Inter­molecular hydrogen‐bond inter­actions between the uncoordinated N atoms of the tetra­zolate anions and the H atoms of the water mol­ecules lead to the formation of a three‐dimensional network.