(E)-N-Ethyl-2-[(E)-3-(hy-droxy-imino)-butan-2-yl-idene]hydrazinecarbothio-amide.

In the crystal structure of the title compound, C(7)H(14)N(4)OS, mol-ecules are linked through N-H⋯S and O-H⋯N hydrogen bonds and C-H⋯S interactions, forming chains propagating along [21-1].

Bis{N-ethyl-2-[3-(hy-droxy-imino-κN)butan-2-yl-idene]hydrazinecarbothio-amide-κN,S}nickel(II) dichloride.

In the title complex, [Ni(C(7)H(14)N(4)OS)(2)]Cl(2), the Ni(II) ion is six-coordinated in a distorted octa-hedral geometry by four N atoms from the two imine and two oxime groups, and two S atoms from the thione groups. Two chloride ions complete the asymmetric unit. In the crystal, mol-ecules are linked through N-H⋯Cl and O-H⋯Cl hydrogen bonds into an infinite chain propagating along [101].

Bis{2-[3-(hy-droxy-imino-κN)butan-2-yl-idene]-N-methyl-hydrazinecarbothio-amide-κN,S}nickel(II) dichloride.

The asymmetric unit of the title compound, [Ni(C(6)H(12)N(4)OS)(2)]Cl(2), contains two independent Ni(II) complex cations and four chloride anions. Each Ni(II) ion is six-coordinated in a distorted octa-hedral geometry by four N atoms from the two imine and two oxime groups and two S atoms from the thione group. In the crystal, the cations and anions are linked through N-H⋯Cl and O-H⋯Cl hydrogen bonds into infinite chains propagating along [10[Formula: see text]].

(E)-2-[(E)-3-(Hy-droxy-imino)-butan-2-yl-idene]-N-methyl-hydrazinecarbothio-amide.

In the title compound, C(6)H(12)N(4)OS, an intra-molecular N-H⋯N hydrogen-bond is present giving rise to an S(5) ring motif. In the crystal, double-stranded chains propagating along [10[Formula: see text]] are formed via pairs of O-H⋯S and N-H⋯S hydrogen bonds. The chains are further stabilized by C-H⋯S interactions.