C 10 H 8 Cd 2 O 7 ,monoclinic, P2 1 /n (no. 14), a =6.886(5) Å, b =7.359(5) Å, c =22.779(5) Å, b =94.518(5)°, Source of materialAllreagentsand solventwereobtained from commercial sources and used without further purification. Amixture of phthalic acid (o-H 2 bdc, 0.017 g, 0.1m mol), Cd(Ac) 2 × 2H 2 O( 0.027 g, 0.1 mmol) and 8mLdistilled H 2 Owas sealed in a15mlTeflon-linedstainless-steel reactorand heated at 130°Cfor three days. After cooling to ambient temperature, colorless crystals of the title compound were collected in 28 %yield. Experimental detailsAll Hatoms on Catoms were generated at idealized positions and refineda sr iding with d(C-H)=0 .93-0 .96Å ,a nd U iso (H) = 1.2 U eq (C). The hydroxyl Hatom was not included in the model. DiscussionThe asymmetric unit of the crystal structure consitst of two Cd(II) ions, one o-phthalate anion (o-bdc), one acetate anion (Ac) and onehydroxylgroup. Both Cd1 and Cd2 areoctahedrallysix-coordinated. Cd1 is coordinated by six oxygen atomsfrom four individual o-bdc anions, one Ac anion and one hydroxylgroup. Cd2 is coordinated by six oxygen atomsf rom two different o-bdc anions, two distinct Ac anions and two individual hydroxyl groups. The Cd-O bond lengths vary from 2.266 (4)

Abstract

C 36 H 26 CoN 9 O, monoclinic, P2 1 /n (no. 14), a =13.3290(5) Å, b =12.5385(5) Å, c =18.3604(8) Å, b =103.007(4)°,Source of material 2-(2-pyridyl)benzimidazole (2-pb) was prepared according to [1]. Otherr eagents were purchased commercially and used as received.Amixture of 2-pb (0.020 g, 0.1 mmol), Co(Ac) 2 × 4H 2 O (0.025 g, 0.1mmol) and 8mLdistilled H 2 Owas sealed in a15ml Teflon-lined stainless steel reactor and heated at 150°C for three days.After coolingtoambient temperature, brown crystals of the title compound were collected and washed with distilled water (yield 32 %). Experimental detailsAllHatoms on Catoms were generated at idealized positions and refined as riding with d(C-H) =0 .93 Å, and U iso (H) = 1.2 U eq (C). Thewater Hatoms were located from difference Fourier maps andr efined as riding atomsw ith d(O-H)=0 .861-0.863Åand U iso =1.5 U eq (O). DiscussionCoordination compounds based on benzimidazolic ligands have attractedmuch attention due to their applications as luminescence and biocidal materials [2].Theacetone solvateofthe titlecomplex wasreported in [2]. The asymmetric unit of the title crystal structure contains one Co(III) ion, three deprotonated 2-pb ligands and one lattice water molecule. In the isolated complex, the Co(III) ion is six-coordinated by nitrogen atomsfrom three different deprotonated 2-pb ligands, forming an octahedron. The 2-pb ligands coordinate the Co(III) ion through imidazole and pyridyln itrogen atoms. The Co-N bond lengths vary from 1.906 (2)

Source of materialBis(2-(1-imidazolyl)ethyl)ether(BIE) was prepared according to [1]. Otherreagents were obtained from commercial suppliers and used withoutf urther purification.Amixture of 5-hydroxybenzene-1,3-dicarboxylic acid (H 3 L, 0.018g,0.1 mmol), Cu(Ac) 2 × H 2 O(0.020g,0.1 mmol), BIE (0.021 g, 0.1 mmol) and 8mLdis-tilled H 2 Owas sealed in a15mlTeflon-linedstainless-steel reactora nd heated at 140°Cf or threed ays. Afterc ooling to room temperature, green crystals of the title compound were obtained and washed with distilled water (yield 47 %). Experimental detailsAllHatoms on Catoms were generated at idealized positions and refineda sr iding with d(C-H)=0 .93-0 .97Å ,a nd U iso (H) = 1.2 U eq (C). The water Hatomsand hydroxylHatom of the compound were located from difference Fourier maps and refined as riding atomsw ith d(O-H) =0 .825-0.866 Åa nd U iso = 1.5 U eq (O). DiscussionOver the past fewy ears, coordination polymers have attracted much interest due to their intriguing architectures and potential applications in fields such as magnetism,electrical conductivity and ion exchange [1]. The asymmetric unit of the crystal structure consists of one Cu(II) ion, one BIE ligand, one HL anion and one water molecule. The Cu(II) ion is five-coordinated by two nitrogen atomsf rom two different BIE ligands, three oxygen atomsf rom two individual HL anions and one water molecule, forming atrigonal bipyramid. The Cu-N bond lengths vary from 1.965(2)-1.978(2) Å, and the Cu-O bond distances range from 1.980(1)-2.400(2) Å. The two carboxylate groups possess m 1 -h 1 :h 0 coordination mode. In this way, the HL anions connect the Cu(II) ions to form infinite chains, which are further interconnected by the BIE ligands to a layer.

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