cis-Bromido(methyl­amine)­bis­(propane-1,3-di­amine)­cobalt(III) dibromide

In the title compound, [CoBr(CH₅N)(C₃H₁₀N₂)₂]Br₂, the cobalt^III ion has a distorted octa­hedral coordination environment and is surrounded by four N atoms in the equatorial plane, with an additional N atom and the Br atom occupying the axial positions. In the crystal, the complex cation and the two counter anions are linked via N—H...Br and C—H...Br hydrogen bonds, forming a three-dimensional network.

trans-Diamminedichloridobis(1H-imidazole-κN³)nickel(II)

The whole mol­ecule of the title compound, [NiCl₂(C₃H₄N₂)₂(NH₃)₂], is generated by inversion symmetry. The Ni^II ion, which is located on an inversion center, has a distorted octa­hedral coordination environment and is surrounded by two ammine N atoms and two Cl atoms in the equatorial plane, with two N atoms of two imidazole groups occupying the axial positions. The imidazole ring makes a dihedral angle of 81.78 (18)° with the Ni/N/Cl equatorial plane. In the crystal, mol­ecules are linked via N—H...Cl hydrogen bonds and C—H...π inter­actions, forming a three-dimensional network.

Ethyl 8′′-chloro-1′-methyl-2,12′′-dioxo-12′′H-di­spiro­[indoline-3,2′-pyrrolidine- 3′,6′′-indolo[2,1-b]quinazoline]-4′-carboxyl­ate

In the title compound, C₂₉H₂₃ClN₄O₄, the quinazoline-indole system and the indolin-2-one system are each essentially planar, with maximum deviations from their mean planes of 0.150 (2) and 0.072 (2) Å, respectively. The central pyrrolidine ring adopts a twisted conformation on the C—C bond involving the spiro C atoms. Its mean plane forms dihedral angles of 83.37 (9) and 86.56 (8)°, respectively, with the indole rings of the indolin-2-one and quinazoline-indole systems. In the crystal, mol­ecules are linked via pairs of N—H...O hydrogen bonds, forming inversion dimers. The dimers are linked via C—H...O hydrogen bonds, forming chains propagating along [001].