Hexachloridobis­{μ2-2-(piperazin-1-yl)-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine}­trizinc dihydrate

In the trinuclear title compound, [Zn3Cl6(C13H20N4)2]·2H2O, each terminal ZnII atom is coordinated by an N3 donor set from the Schiff base ligands and two Cl atoms in a distorted square-pyramidal geometry. The central ZnII atom is tetra­hedrally coordinated by two piperazine N atoms from two Schiff base ligands and two Cl atoms. The piperazine rings adopt chair conformations. In the crystal structure, adjacent complex mol­ecules are linked into a three-dimensional network via N—H⋯O, C—H⋯Cl and C—H⋯O hydrogen bonds. The structure includes two water mol­ecules, one of which is disordered over two positions with occupancies of 0.753 (15) and 0.247 (15)

Aqua{2-(morpholin-4-yl)-N-[1-(2-pyri­dyl)ethyl­idene]ethanamine-κ3 N,N′,N′′}bis­(thio­cyanato-κN)manganese(II)

In the title compound, [Mn(NCS)2(C13H19N3O)(H2O)], the Schiff base acts as an N,N′,N"-tridentate ligand, forming two five-membered chelating rings with the MnII atom. The distorted octa­hedral geometry around the metal atom is completed by two cis-positioned N-bound thio­cyanate ligands and one water mol­ecule. In the crystal, adjacent mol­ecules are linked through O—H⋯O, O—H⋯S and C—H⋯S hydrogen bonds into a three-dimensional supra-mol­ecular structure. An intra­molecular C—H⋯O hydrogen bond also occurs

Dibromido{2-(morpholin-4-yl)-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine-κ3 N,N′,N′′}cadmium

The CdII ion in the title compound, [CdBr2(C13H19N3O)], is five-coordinated by the N,N′,N′′-tridentate Schiff base ligand and two Br atoms in a distorted square-pyramidal geometry. In the crystal, inter­molecular C—H⋯O and C—H⋯Br hydrogen bonds link adjacent mol­ecules into layers parallel to the ab plane. An intra­molecular C—H⋯Br inter­action is also observed

{N,N-Dimethyl-N′-[1-(2-pyrid­yl)ethyl­idene]ethane-1,2-diamine-κ3 N,N′,N′′}bis­(thio­cyanato-κN)copper(II)

The asymmetric unit of the title compound, [Cu(NCS)2(C11H17N3)], consists of two crystallographically independent mol­ecules. In each mol­ecule, the CuII ion is five-coordinated in a distorted square-pyramidal geometry wherein the basal plane is defined by the N,N′,N"-tridentate Schiff base and one N-bound thio­cyanate ligand. The second N-donor thio­cyanate group, located at the apical site, completes the coordination environment. In the crystal, inter­molecular C—H⋯S and C—H⋯N hydrogen bonds link adjacent mol­ecules into infinite layers parallel to the ac plane. Intra­molecular C—H⋯N inter­actions are also observed

Aqua­{2-morpholino-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine-κ3 N,N′,N′′}bis­(thio­cyanato-κN)nickel(II)

In the title compound, [Ni(NCS)2(C13H19N3O)(H2O)], the NiII ion is six-coordinated by the N,N′,N′′-tridentate Schiff base, the N atoms of two thio­cyanate ligands and one water O atom in a distorted octa­hedral geometry. Intra­molecular C—H⋯N and C—H⋯O hydrogen bonds occur. In the crystal, O—H⋯S, O—H⋯O and C—H⋯S hydrogen bonds link adjacent mol­ecules into layers parallel to the ac plane

Dichlorido{2-morpholino-N-[1-(2-pyri­dyl)ethyl­idene]ethanamine-κ3 N,N′,N′′}cadmium

In the title compound, [CdCl2(C13H19N3O)], the CdII ion is five-coordinate, with the N,N′,N′′-tridentate Schiff base ligand 2-morpholino-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine and two Cl atoms in a distorted square-pyramidal geometry. In the crystal structure, C—H⋯Cl hydrogen-bonding inter­actions connect the mol­ecules into a three-dimensional network

Di-μ-thio­cyanato-κ2 N:S;κ2 S:N-bis­({2-morpholino-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine-κ3 N,N′,N′′}(thio­cyanato-κN)cadmium)

In the title complex, [Cd2(NCS)4(C13H19N3O)2], the two CdII ions are bridged by a pair of thio­cyanate N:S-bridging ligands around an inversion center. One terminal thio­cyanate N atom and one N,N′,N′′-tridentate Schiff base ligand complete a distorted CdN5S octa­hedral geometry about each CdII atom. In the crystal, the Schiff base aromatic rings of adjacent mol­ecules are arranged above each other into infinite chains along the a axis with alternate centroid–centroid separations of 3.5299 (13) and 3.7857 (13) Å

Aqua­{2-morpholino-N-[1-(2-pyrid­yl)ethyl­idene]ethanamine-κ3 N,N′,N′′}bis­(thio­cyanato-κN)cobalt(II)

In the title complex, [Co(NCS)2(C13H19N3O)(H2O)], the CoII ion is six-coordinated by the N,N′,N′′-tridentate Schiff base, the N atoms of two thio­cyanate ligands and one water mol­ecule in a distorted octa­hedral geometry. Intra­molecular C—H⋯N and C—H⋯O hydrogen bonds occur. In the crystal, inter­molecular O—H⋯O, O—H⋯S, C—H⋯S and S⋯S [3.5546 (18) Å] inter­actions result in an infinite three-dimensional network

2,6-Diamino-4-oxo-3,4-dihydropyrim­idin-1-ium chloride dihydrate

In the crystal structure of the title compound, C4H7N4O+·Cl−·2H2O, adjacent cations are connected to one another through N—H⋯O hydrogen bonds, forming infinite chains along the b axis. These chains are further hydrogen bonded to the chloride anions and water mol­ecules, resulting in a three-dimensional network. The pyrimidine rings of adjacent mol­ecules are arranged in an anti­parallel manner above each other with centroid–centroid distances of 3.435 (1) Å, indicative of π–π inter­actions

[(1S,2S)-2-(1-{[2-(2-Oxidobenzyl­idene­amino)­cyclo­hex­yl]imino}­eth­yl)phenolato-κ4 O,N,N′,O′]copper(II)

In the title compound, [Cu(C21H22N2O2)], the cyclo­hexyl ring adopts a chair conformation with the two imine groups linked at equatorial positions. The CuII ion is coordinated by two N atoms and two O atoms from the bis-Schiff base ligand in a slightly distorted square-planar geometry. The dihedral angle between the two benzene rings is 45.89 (9)°. The crystal structure is devoid of any classical hydrogen bonds. However, inter­molecular C—H⋯O inter­actions are present and stabilize the structure