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In the title compound, C(26)H(25)ClN(4)O(3)S, the acyclic imine group exhibits an E configuration. The triazole ring is oriented at dihedral angles of 53.84 (2), 70.77 (1) and 32.59 (3)° with respect to the benzene rings of the 2-chloro-benzyl-idene, 4-methyl-benzyl-sulfanyl and 3,4,5-trimethoxy-phenyl groups, respectively. The crystal packing is stabilized by weak inter-molecular C-H⋯N, C-H⋯S and C-H⋯π inter-actions.

In the title mononuclear complex, [Ni(C(8)H(7)O(3))(2)(C(3)H(4)N(2))(2)], the Ni(II) atom, lying on a twofold rotation axis, is coordinated by four carboxyl-ate O atoms from two bidentate 3-hydroxy-phenylacetato ligands and two N atoms from two imidazole mol-ecules in a distorted octa-hedral geometry. A three-dimensional network is formed via inter-molecular O-H⋯O and N-H⋯O hydrogen bonds and π-π stacking inter-actions between the imidazole and benzene rings of neighboring mol-ecules [centroid-centroid distance = 3.856 (2) Å].

The asymmetric unit of the title compound, {[AgNd(C(6)H(4)NO(2))(2)(C(2)O(4))]·2H(2)O}(n), contains one Nd(III) atom, one Ag(I) atom, one oxalate ligand, two nicotinate ligands and two uncoordinated water mol-ecules. The Nd(III) atom is eight-coordinated in a distorted square-anti-prismatic coordination geometry by four O atoms from two oxalate ligands and four O atoms from four nicotinate ligands. The Ag(I) atom has a T-shaped configuration, defined by two N atoms from two nicotinate ligands and one O atom from one oxalate ligand. The nicotinate and oxalate ligands link the Nd and Ag atoms into a three-dimensional coordination framework. O-H⋯O and O-H⋯N hydrogen bonds donated by water mol-ecules are observed in the crystal.

The title compound, C(22)H(24)N(4)O(4)S, adopts a trans configuration with respect to the C=N double bond. A weak intra-molecular C-H⋯N hydrogen bond is observed between the N atom of the C=N double bond and its neighboring phenyl H atom. The crystal structure is stabilized by inter-molecular C-H⋯N hydrogen bonds and C-H⋯π inter-actions.

In the title compound, [Ag(C(6)H(5)NO(2))(2)]ClO(4), the Ag(I) atom shows an almost linear coordination geometry, defined by two N atoms from two pyridine-3-carboxylic acid ligands. The complex cations are linked by hydrogen bonds between the carboxyl groups into a chain. The chains are further connected through C-H⋯O hydrogen bonds and a weak Ag⋯O inter-action [2.757 (8) Å] into a layer. Another Ag⋯O inter-action [2.899 (2) Å] and a C-H⋯O hydrogen bond connect the layers into a three-dimensional network.

In the mol-ecular structure of the title compound, C(13)H(12)N(2)O(4)S(2), there is a dihedral angle of 0.41 (13)° between the benzene and thia-zole rings. In the crystal, inversion dimers linked by two C-H⋯O inter-actions together with π-π stacking between the parallel benzene rings of adjacent mol-ecules [centroid-centroid distance = 3.673 (2) Å].