Bis{μ-2-[bis­(pyridin-2-yl)methyl­idene]hydrazinecarbothio­amidato}bis­[bromido­copper(II)] methanol disolvate

In the centrosymmetric binuclear title compound, [Cu₂Br₂(C₁₂H₁₀N₅S)₂]·2CH₃OH, the Cu^II ion adopts a slightly dis­torted square-pyramidal coordination geometry. The hydrazine carbothio­amide moiety and one of the pyridyl rings together adopt an almost planar arrangement, with a maximum deviation of 0.052 (4) Å for the C atom of the thio­urea moiety. There are two mol­ecules of methanol solvent per complex in the asymmetric unit. The nonconventional intra­molecular C—H...Br hydrogen bonds make the mol­ecule more rigid, whereas the conventional N—H...N and O—H...Br inter­molecular hydrogen-bonding inter­actions, supported with N—H...π inter­actions, establish a supra­molecular linkage among the mol­ecules in the crystal. An intermolecular C—H...O inter­action is also present.

catena-Poly[[[{1-[(E)-phenyl(pyridin-2-yl-κN)methylidene]semicarbazidato-κ²N¹,O}copper(II)]-μ-dicyanamido-κ²N¹:N⁵] monohydrate]

The Cu^II atoms in the title coordination polymer, {[Cu(C₁₃H₁₁N₄O)(C₂N₃)]·H₂O}_n, are N,N′,O-chelated by the deprotonated Schiff base ligands, and adjacent metal atoms are bridged by the dicyanamide ions, generating a polymeric chain that propagates along the b axis. The two independent metal atoms show a square-pyramidal N₄O coordination. The two independent water mol­ecules are disordered over two positions; each water mol­ecule is a hydrogen-bond donor to a carbonyl O atom. Weak N—H...N hydrogen bonding is also observed.

(Cyanato-κN){1-[(E)-phen­yl(pyridin-2-yl-κN)methyl­idene]semicarbazidato-κ²N¹,O}copper(II)

The Cu^II atom in the title compound, [Cu(C₁₃H₁₁N₄O)(NCO)], is N,N′,O-chelated by the mono-deprotonated Schiff base ligand and it is also covalently bonded to the nitro­gen end of the cyanate ion. The Cu^II atom shows a square-planar coordination that is distorted towards square-pyramidal owing to an inter­molecular Cu...N_cyanate inter­action [2.623 (2) Å], which gives a centrosymmetric dimer. In the square-planar description, the Cu^II atom is displaced out of the square plane [r.m.s. deviation = 0.048 Å] by 0.084 (1) Å in the direction of the apical occupant. In the crystal, adjacent complex dimers are linked by an amine N—H...N hydrogen-bond pair, also giving a centrosymmetric cyclic association [graph set R₂²(8)], generating a linear chain parallel to [110].

Dichlorido(1-{(E)-[phen­yl(pyridin-2-yl-κN)methyl­idene]amino-κN}pyrrolidin-2-one-κO)copper(II) monohydrate

The Cu^II atom in the title compound, [CuCl₂(C₁₆H₁₅N₃O)]·H₂O, is N,N′,O-chelated by the neutral Schiff base ligand and exists in a square-pyramidal geometry. It is displaced by 0.316 (1) Å out of the square plane (r.m.s. deviation = 0.015 Å) in the direction of the apical Cl atom. The apical Cl atoms of adjacent complex units are hydrogen-bond acceptors to two water mol­ecules, the inter­action generating a centrosymmetric dimer through a cyclic R₄²(8) association.

{2-[(2-Carbamoylhydrazin-1-yl­idene)methyl-κ²N¹,O]-5-meth­oxy­phenolato-κO¹}chloridocopper(II)

The asymmetric unit of the title compound, [Cu(C₉H₁₀N₃O₃)Cl], contains two independent mol­ecules with similar structures. The Cu^II cation is N,O,O′-chelated by the deprotonated Schiff base ligand and is further coordinated by a Cl⁻ anion in a distorted ClNO₂ square-planar geometry. In the crystal, adjacent mol­ecules are linked by N—H...O and N—H...Cl hydrogen bonds, forming a two-dimensional network parallel to [100].

Di-μ-azido-κ⁴N¹:N^1′-bis­({1-[(E)-phen­yl(pyridin-2-yl-κN)methyl­idene]thio­semi­carbazidato-κ²N¹,S}copper(II))

In the title compound, [Cu₂(C₁₃H₁₁N₄S)₂(N₃)₂], the Cu^II cation is N,N′,S-chelated by the deprotonated Schiff base ligand and is coordinated by the azide anion, while an N atom from an adjacent azide anion bridges the Cu^II cation at the apical position with a longer Cu—N distance of 2.533 (3) Å, completing the distorted N₄S square-pyramidal coordination geometry. A pair of azide anions bridge the two Cu^II cations, forming a centrosymmetric binuclear mol­ecule. In the crystal, the binuclear mol­ecules are linked by an N—H...N hydrogen bond into a ribbon running along the a axis.

(1-{(E)-[Phen­yl(pyridin-2-yl-κN)methyl­idene]amino-κN}pyrrolidin-2-one-κO)bis­(thio­cyanato-κN)copper(II)

The Cu^II atom in the title compound, [Cu(NCS)₂(C₁₆H₁₅N₃O)], is bonded to the N atoms of two thio­cyanate ions, and is N,N′-chelated by the Schiff base ligand. The four N atoms surround the metal atom to form a distorted square; the square environment is distorted towards a square pyramid by a long Cu...O inter­action. In the crystal, two C atoms of the pyrrolidin-2-one ring are disordered over two positions in a 1:1 ratio.