In the title coordination polymer, {[Eu(C(7)H(2)NO(5))(H(2)O)(3)]·H(2)O}(n), the Eu(III) atom is eight-coordinated by a tridentate 4-oxidopyridine-2,6-dicarboxyl-ate (hpc) trianion, two monodentate hpc anions and three water mol-ecules, forming a distorted bicapped trigonal-prismatic coordination geometry. The hpc ligands bridge adjacent Eu(III) ions, forming infinite double chains. Adjacent ch...

The polymeric title compound, [Zn(C(7)H(6)N(5))(2)](n), was synthesized by the hydro-thermal reaction of Zn(NO(3))(2) with 2-amino-benzonitrile in the presence of NaN(3). The zinc(II) metal centre displays a distorted octa-hedral coordination environment provided by N atoms of two bidentate chelating and two monodentate 5-(2-amino-phen-yl)tetra-zolate ligands. These ligands act as bridges, link...

A pair of linear cyanamide (NCNH(2)) ligands, two monodentate 4-(1H-imidazol-1-yl)phenol (L) ligands and two nitrate anions link the Cu(II) atom into a mononuclear unit, [Cu(NO(3))(2)(C(9)H(8)N(2)O)(2)(NCNH(2))(2)]. The coordination polyhedron of the Cu atom is an elongated octa-hedron distorted by Jahn-Teller effects. Inter-molecular O-H⋯O, O-H⋯N, N-H⋯O and N-H⋯N hydrogen-bonding inter-actions...

Using potentially bidentate ligands (-SC2H4NH2), we produced [2Fe-2S]+ species of different coordination geometries by fission of [4Fe-4S]2+ complexes. Even though the ligands are monodentate in the cubane complexes, both mono- and bidentate complexes were observed in the [2Fe] fission products through self-assembly because of the high reactivity of the tricoordinate iron sites. The electronic ...

Catechol O-methyltransferase (COMT) is a SAM- and Mg2+-dependent methyltransferase that regulates neurotransmitters through methylation. Simulations and experiments have identified divergent catecholamine substrate orientations in the COMT active site: molecular dynamics simulations have favored a monodentate coordination of catecholate substrates to the active site Mg2+, and crystal structures...

The reactions of dppf-nickel(0) with alkyl halides proceed via three-coordinate nickel(0) intermediates the form [Ni(dppf)(L)]. effects identity added ligand (L) on catalyst speciation and rates [Ni(COD)(dppf)] have been investigated using kinetic experiments density functional theory calculations. A series monodentate ligands in attempts to identify trends reactivity. Sterically bulky electron...

A new two-dimensional (2D) coordination polymer of the formula {Cu(ox)(4-Hmpz)·1/3H2O}n (1) (ox = oxalate and 4-Hmpz 4-methyl-1H-pyrazole) has been prepared, its structure determined by single-crystal X-ray diffraction. It consists corrugated oxalato-bridged copper(II) neutral layers featuring two alternating bridging modes group within each layer, symmetric bis-bidentate (?-?2O1,O2:?2O2?,O1?) ...

In the title compound, [U(C(4)F(9)O(3)S)O(2)(C(4)H(8)O)(3)], each U(VI) ion is located on a twofold rotation axis and is seven-coordinated by two terminal O atoms in the axial positions [U-O = 1.737 (5) Å] and five O atoms from two monodentate nona-fluoro-butane-sulfonate (NfO(-)) and three tetra-hydro-furan ligands in the equatorial plane [U-O = 2.388 (5)-2.411 (4) Å] in a penta-gonal-bipyrami...

In the title complex, {[Mn(C(14)H(6)O(6)S)(C(2)H(6)O(2))(H(2)O)(2)]·C(4)H(9)NO}(n), the Mn(II) ion is six-coordinated in a trans-octa-hedral geometry by two carboxyl-ate O atoms from two 5,5-dioxodibenzo[b,d]thio-phene-3,7-dicarboxyl-ate (L) ligands in a monodentate mode, two O atoms from two ethyl-ene glycol (EG) mol-ecules and two aqua O atoms. The metal ions are linked by the EG and L ligand...

The title compound, [Cd(NO(3))(2)(C(11)H(13)N(3))(2)], was synthesized by hydro-thermal reaction of Cd(NO(3))(2) and S-2-(pyrrolidin-2-yl)-1H-1,3-benzimidazole. The Cd atom lies on an inversion centre. The distorted octa-hedral Cd environment contains two planar trans-related N,N-chelating S-2-(pyrrolidin-2-yl)-1H-1,3-benzimidazole ligands in one plane and two monodentate nitrate ligands. N-H⋯O...