Nurcan Akduran

Crystal Structure of 15,21‐Bis(diethoxyphosphinoyl)‐2,5,8‐trioxa‐16,20‐diazatricyclo‐ [20.4.0.09,14] hexacosa‐9,11,13,22,24,26(1)‐hexaene‐Ethylphosphonic Acid‐Water (1/1/1)

The title compound (C 31 H 55 N 2 O 13 P 3 ) crystallizes in the triclinic space group P1 with a=12.676(4) A, b=13.733(3)A, c=14.042(2)A, α=67.94(4)°, β=77.15(4)°, γ=61.95(4)°, V=1996.2(8)A 3 , Z=2, D x =1.259 g.cm -3 . The structure was solved by direct methods and refined by full-matrix least-squares method (R=0.055). The macrocyclic ligand is an 18-membered lariat ether containing two N and three etheral O atoms and two phosphonate side groups. The title compound consists of the macrocyclic ligand, one ethyl phosphonic acid and one water molecule, as a whole. In the macrocyclic ring, the mean N...O distance is 5.481(6) A. The relative macrocyclic inner hole size, estimated as twice the mean distance of the donor atoms from their centroid is approximately 2.29 A.

2,4-[2,2′-Methylenebis(4-nitrophen­oxy)]-2,4,6,6-tetrachlorocyclo-2λ5,4λ5,6λ5-triphosphazatriene (ansa)

The title compound, C13H8Cl4N5O6P3, consists of a non-planar trimeric phosphazene ring and a bulky 2,2′-methylenebis(4-nitrophenoxy) side group which predominantly determines the molecular shape. With respect to the corresponding values in the reference compound N3P3Cl6, the endocyclic angle around one P atom is the same, but the exocyclic angle is increased, while the endocyclic and exocyclic angles about another P atom are both decreased. This situation is different from that in other reported phosphazene derivatives.

Crystal structure of catena-poly[[[di­aqua­bis­(2,4,6-tri­methyl­benzoato-κO)cobalt(II)]-μ-aqua-κ2O:O] dihydrate]

In {[Co(C10H11O2)2(H2O)3]·2H2O}n, the CoII atom is coordinated by two TMB anions and two water molecules in the basal plane, while another water molecule bridges the CoII atoms in the apical directions, forming polymeric chains running along [001].

Crystal structure of bis­(μ-3-nitro­benzoato)-κ3O,O′:O;κ3O:O,O′-bis­[bis­(3-cyano­pyridine-κN1)(3-nitro­benzoato-κ2O,O′)cadmium]

In the title cadmium complex of 3-nitrobenzoate and 3-cyanopyridine, binuclear centrosymmetric molecules are present, with cadmium being surrounded in an N2O5 coordinaton set in a distorted pentagonal–bipyramidal shape.

Crystal structure of catena-poly[[aqua­bis­(4-cyano­benzoato-κO)copper(II)]-μ-N,N-di­ethyl­nicotinamide-κ2N1:O]

The asymmetric unit of the title polymeric compound contains one CuII atom, one coordinating water molecule, two 4-cyanobenzoate (CB) ligands and one coordinating N,N-diethylnicotinamide (DENA) molecule. The DENA ligands bridge adjacent Cu2+ ions, forming polymeric coordination chains running along the b axis.

Crystal structure of trans-di­aqua­bis­(4-cyano­benzoato-κO)bis­(N,N-di­ethyl­nicotinamide-κN)cadmium

The CdII atom in the title complex, [Cd(C10H14N2O)2(C8H4NO2)2(H2O)2], is located on an inversion centre and is coordinated by an N2O4 donor set from pairs of water, 4-cyanobenzoate and N,N-diethylnicotinamide ligands.

Crystal structure oftrans-diaquabis(4-cyanobenzoato-κO)bis(N,N-diethylnicotinamide-κN)cadmium

In the crystal, the title centrosymmetric ZnII complex molecules are linked by O—H⋯O hydrogen bonds into supramolecular chains propagating along the [110] direction.