Di-μ-oxido-bis­[bis­(diiso­propyl­aceta­midinato)-κN;κ²N,N′-germanium(IV)]

The title compound, [Ge₂(C₈H₁₇N₂)₄O₂], crystallizes with imposed twofold symmetry, which allows the monodentate amidinate ligands to be arranged in a cisoid fashion. The independent Ge—O distances within the central Ge₂O₂ ring, which is essentially planar (r.m.s. deviation = 0.039 Å), are 1.7797 (8) and 1.8568 (8) Å. The germanium centres adopt a distorted trigonal–bipyramidal geometry, being coordinated by the two O atoms and by one bidentate and one monodentate amidinate ligand (three N atoms). One N-isopropyl group is disordered over two positions; these are mutually exclusive because of `collisions' between symmetry-equivalent methyl groups and thus each has 0.5 occupancy.

5-Bromo-4-(3,5-di­bromo-2-hy­droxy­phen­yl)-2-(piperidin-1-yl)-1,3-di­thiol-2-ylium bromide

In the title salt, C₁₄H₁₃Br₃NOS₂⁺·Br⁻, synthesized by bromination of mesoionic 2-[2-(piperidin-1-yl)-1,3-di­thiol-2-ylium-4-yl]phenolate in glacial acetic acid, the dihedral angle between the 1,3-di­thiol­ium ring and the phenolic substituent ring is 45.9 (3)° due to the steric influence of the ortho-Br group on the 1,3-di­thiol­ium ring. The piperidine ring adopts a chair conformation. In the crystal, the cation and anion are linked by an O—H...Br hydrogen bond.

rac-1-(5-Bromo-2-hy­droxy­phen­yl)-1-oxopropan-2-yl morpholine-4-carbo­dithio­ate

In the racemic title compound, C₁₄H₁₆BrNO₃S₂, synthesized from the corresponding ω-bromo­propio­phenone, the dihedral angle between the plane of the phenol group and that of the planar section [maximum deviation = 0.040 (2) Å] of the morpholine-4-carbodi­thiol­ate moiety is 76.36 (10)°. A strong intra­molecular phenol O—H...O hydrogen bond if present in the mol­ecule. In the crystal, only weak C—H...S and C—H...O inter­actions are found.

4-Bromo-2-[5-methyl-2-(morpholin-4-yl)-1,3-thia­zol-4-yl]phenol

In the title compound, C₁₄H₁₅BrN₂O₂S, synthesized by the reaction of the corresponding phenacyl thio­cyanate with morpholine, the dihedral angle between the 1,3-thia­zole ring and the phenolic substituent ring is 23.46 (10)° as a result of the steric influence of the ortho-methyl group on the thia­zole ring. A strong intra­molecular phenolic O—H...N hydrogen bond is present in the mol­ecule. In the crystal, a weak C—H...O_phenol hydrogen bond gives rise to chains lying parallel to [20-1]. A short inter­molecular Br...O_morpholine inter­action is also present [3.1338 (19) Å].