Poly[[μ 2 -aqua-μ 3 -(4-carboxy-2-propyl-1 H -imidazole-5-carboxylato-κ 4 N 3 , O 4 : O 4 : O 5 )-sodium] hemihydrate]

The whole molecule of the title compound, [NiCl2(C3H4N2)2(NH3)2], is generated by inversion symmetry. The NiII 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.

Section: Sup-1mentioning

confidence: 99%

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

Kannan¹,

Ganeshraja

Rajkumar

et al. 2013

“…For biological and pharmaceutical properties of imidazoles and imidazole-containing compounds, see: Roman et al (2007); Nanterment et al (2004); Congiu et al (2008); Venkatesan et al (2008); Bhatnagar et al (2011); Puratchikody & Doble (2007); Gaonkar et al (2009). For applications of imidazole and its derivatives in the construction of metalorganic frameworks, see: Huang et al (2008Huang et al ( , 2011.…”

Section: Related Literaturementioning

confidence: 99%

“…Knowledge of the detailed coordination behaviour of imidazoles and their limitation in the possible use in complexes with specific catalytic activity is of great current importance. Imidazoles, namely 1,3-diazacyclopenta-2,4-diene and its derivatives, have found a wide range of applications in coordination chemistry because of their multiple coordination modes as ligands to metal ions and for the construction of novel metal-organic frameworks (Huang et al, 2008(Huang et al, , 2011.…”

Section: S1 Commentmentioning

confidence: 99%

cis-Diaquatetrakis(1-butyl-1H-imidazole-κN³)nickel(II) dichloride

Kannan¹,

Ganeshraja

Rajkumar

et al. 2013

In the title compound, [Ni(C7H12N2)4(H2O)2]Cl2, the nickel(II) ion has a distorted octahedral coordination environment. It is surrounded by three N atoms and one O atom occupying the equatorial plane, and one N and one O atom in the axial positions. The imidazole ring systems are inclined to one another with dihedral angles varying between 38.3 (4) and 74.1 (4)°. In the crystal, molecules are linked via O—H⋯Cl hydrogen bonds involving one Cl− anion and the water molecule in the equatorial plane, forming an inversion dimer-like arrangement. The water molecule in the axial position is hydrogen-bonded to both Cl− anions. There are also a number of C—H⋯Cl hydrogen bonds present, forming a three-dimensional structure. All four alkyl chains are disordered over two positions with refined occupancy ratios of 0.395 (15):0.605 (15), 0.658 (14):0.342 (14), 0.332 (11):0.668 (11) and 0.622 (12):0.378 (12).

Poly[1H-imidazol-3-ium [di-μ-nitrato-sodium]]

Trifa¹,

Bouhali²,

Bouacida³

et al. 2013

In the title compound {(C3H5N2)[Na(NO3)2]}n, the NaI ion is coordinated by eight O atoms from three bidentate nitrate anions and two O atoms from two monodentate nitrate anions, displaying a bicapped trigonal–prismatic geometry. The imidazolium cation is essentially planar (r.m.s. deviation for all non-H atoms = 0.0018 Å). In the crystal, the NaI ions are connected by bridging nitrate ligands, forming layers parallel to (010). The imidazolium cations are sandwiched between these layers. Weak C—H⋯O hydrogen bonds link the layers into a three-dimensional network. In addtion, π–π interactions between the imidazolium rings [centroid–centroid distance = 3.588 (3) Å] are observed.