Aqua­(5,10,15,20-tetra­phenyl­porphyrin­ato-κ⁴N)cadmium(II)–18-crown-6 (1/1)

The title compound, [Cd(C₄₄H₂₈N₄)(H₂O)]·(C₁₂H₂₄O₆), was made by the reaction of the [Cd(TPP)] with an excess of 18-crown-6 in chloro­benzene (where TPP is tetra­phenyl­porphyrinate). The Cd^II cation is chelated by a TPP anion and coordinated by a water mol­ecule in a distorted N₄O square-pyramidal geometry, the Cd^II cation being displaced by 0.7533 (9) Å from the mean plane of four N atoms of TPP anion. The porphyrin core presents a significant distortion, the maximum atomic deviation from the 24-atom mean plane is 0.1517 (2) Å. The 18-crown-6 mol­ecule is linked with the Cd^II complex via classical O—H...O hydrogen bonds. In the crystal, weak C—H...π inter­actions link the complex and 18-crown-6 mol­ecules into a three-dimensional supra­molecular architecture.

catena-Poly[bis­(μ₃-2-phenyl­acetato-κ³O,O′:O)bis­(μ₂-2-phenyl­acetato-κ²O:O′)dicopper(II)(Cu—Cu)]

The title polymeric compound, [Cu₂(C₈H₇O₂)₄]_n, was synthesized by the reaction of copper acetate with aqueous phenyl­acetic acid. The unique Cu^II atom is coordinated by five O atoms from the carboxyl­ate groups of phenyl­acetate ligands, and the strongly distorted octa­hedral coordination environment is completed by a Cu—Cu bond of 2.581 (2) Å, at whose mid-point is located an inversion centre. The crystal structure consists of infinite polymeric linear chains of Cu²⁺ ions, running along [100], linked by bridging phenyl­acetate groups.

(3R*,6R*,4'S*,8'R*,3''R*,6''R*)-3,3''-Diisopropyl-6,6''-dimethyl-2',6'-di­phenyl­dispiro­[cyclo­hexane-1,4'-(3,7-dioxa-2,6-di­aza­bicyclo­[3.3.0]octa­ne)-8',1''-cyclo­hexa­ne]-2,2''-dione

The two oxazolidine rings (A and B) of the title compound, C₃₄H₄₄N₂O₄, display roughly half-chair conformations, which could be described as twisted on the C-O bond. Together, the fused oxazolidine rings have a butterfly shape, with the H atoms attached to the ring junction C atoms in a cis orientation. The cyclo­hexane rings of both p-menthone fragments display chair conformations. The absolute configuration could not be determined from the X-ray diffraction data, but the relative configuration of the stereocentres could be deduced.