Hexaaqua­magnesium bis­{4-[(5-bromo-2-hy­droxy­benzyl­idene)amino]­benzene­sulfonate} dihydrate

In the title hydrated mol­ecular salt, [Mg(H2O)6](C13H9BrNO4S)2·2H2O, the Mg2+ ion (site symmetry ) adopts a near regular MgO6 octa­hedral coordination geometry. In the anion, the dihedral angle between the aromatic rings is 2.5 (2)° and an intra­molecular O—H⋯N hydrogen bond generates an S(6) ring. In the crystal, the components are linked by O—H⋯O and O—H⋯Br hydrogen bonds

Aqua­dipyridine­bis­(N-p-tolysulfonyl-l-leucinato)nickel(II)

In each of the two mol­ecules in the asymmetric unit of the title compound, [Ni(C13H18NO4S)2(C5H5N)2(H2O)], the geometry of the Ni2+ ion is an extremely distorted trans-NiN2O4 octa­hedron, arising from its coordination by one water mol­ecule, two pyridine mol­ecules, and one O-monodentate and one O,O′-bidentate deprotonated N-p-tolysulfonyl-l-leucine ligand. In the crystal, mol­ecules are linked by N—H⋯O and O—H⋯O hydrogen bonds, forming chains along the c axis. An intra­molecular O—H⋯O hydrogen bond occurs in one of the mol­ecules

Bis[2-acetyl-3-methyl­pyrazine (2-hydroxy­benzo­yl)hydrazonato]zinc(II) monohydrate

In the title compound, [Zn(C14H13N4O2)2]·H2O, the ZnII centre is six-coordinated by four N and two O donors of two 2-acetyl-3-methyl­pyrazine (2-hydroxy­benzo­yl)hydrazonate ligands, and forms a distorted octa­hedral structure

Hexaaqua­cobalt(II) bis­[4-(2-hydroxy­benzyl­ideneamino)­benzene­sulfonate]

In the cation of the title compound, [Co(H2O)6](C13H10NO4S)2, the Co atom lies on a centre of symmetry and its coordination geometry is octahedral. The crystal structure is stabilized by water–anion O—H⋯O hydrogen bonds. An intra­molecular O—H⋯N hydrogen bond occurs in the anion

N′-[1-(2-Pyrid­yl)ethyl­idene]nicotino­hydrazide

In the the title compound, C13H12N4O, the dihedral angle between the aromatic ring planes is 21.7 (3)°. In the crystal structure, interm­olecular N—H⋯O hydrogen bonds lead to C(4) chains

Hexaaqua­magnesium(II) bis­[4-(3-eth­oxy-2-hydroxy­benzyl­ideneamino)-3-methyl­benzene­sulfonate]

In the title compound, [Mg(H2O)6](C16H16NO5S)2, the Mg2+ ion (site symmetry 2) adopts an almost regular octa­hedral coordination geometry. The anion is stabilized by an intra­molecular O—H⋯N hydrogen bond, generating an S(6) ring, and the dihedral angle between the aromatic rings is 41.02 (7)°. In the crystal, the cations and anions are linked by O—H⋯O hydrogen bonds, generating sheets lying parallel to (100)

Tetra­aqua­bis[2-(thio­semi­carbazono­methyl)benzene­sulfonato]manganese(II)

In the title compound, [Mn(C8H8N3O3S2)2(H2O)4], the MnII atom (site symmetry ) adopts a slightly distorted octa­hedral MnO6 geometry. The mol­ecular conformation is supported by N—H⋯N and O—H⋯O hydrogen bonds. In the crystal, mol­ecules inter­act by O—H⋯O, O—H⋯S, N—H⋯O and N—H⋯S hydrogen bonds, thereby forming (011) sheets

μ-2,2′-(Azinodimethylene)dibenzene­sulfonato-bis­[hepta­aqua­europium(III)] bis­[2,2′-(azino­dimethylene)dibenzene­sulfonate] deca­hydrate

In the title compound, [Eu2(C14H10N2O6S2)(H2O)14](C14H10N2O6S2)2·10H2O, the complete bimetallic cation is generated by crystallographic inversion symmetry. The Eu atom adopts a distorted dodeca­hedral coordination arising from one O-bonded 2,2′-azinodibenzene­sulfonate ligand and seven water mol­ecules. In the crystal structure, the components are linked by multiple O—H⋯O and O—H⋯N hydrogen bonds

4-[(4-Diethyl­amino-2-hydroxy­benzyl­idene)ammonio]-3-methyl­benzene­sulfonate

In the zwitterionic title compound, C18H22N2O4S, the dihedral angle between the aromatic rings is 16.39 (11)° and an intra­molecular N—H⋯O hydrogen bond occurs. In the crystal, mol­ecules are linked by O—H⋯O hydrogen bonds, forming chains propagating in [01]