(Benzoato-κO)(benzoic acid-κO)(4,4′-dimethyl-2,2′-bipyridine-κ2 N,N′)hydroxidocopper(II) monohydrate

In the structure of the title complex, [Cu(C7H5O2)(OH)(C12H12N2)(C7H6O2)]·H2O, the CuII ion is penta­coordinated in a tetra­gonal-pyramidal geometry with one O atom of a hydroxide group, one O atom of a benzoate anion and two N atoms of a 4,4′-dimethyl-2,2′-bipyridine ligand occupying the basal plane, and one O atom of a benzoic acid mol­ecule located at the apical site. The title complex was refined with a metal-coordinated OH group and a ‘free’ benzoic acid molecule, although it can be assumed that the proton is delocalized between the OH and the COOH group. The uncoordinated water mol­ecule is equally disordered over two positions. The structure displays O—H⋯O hydrogen bonding

Dibenzoato-κO;κ2 O,O′-(6,6′-dimethyl-2,2′-bipyridine-κ2 N,N′)zinc(II)–benzoic acid (1/1)

In the crystal structure of the title compound, [Zn(C6H5COO)2(C12H12N2)]·C6H5COOH, the Zn atom is penta­coordinated in distorted square-pyramidal geometry by two O atoms of a benzoate anion and two N atoms of a 6,6′-dimethyl-2,2′-bipyridine ligand occupying the basal plane and an O atom of another benzoate anion located at the apical site. In the crystal structure, inter­molecular O—H⋯O and C—H⋯O hydrogen bonds and C—H⋯π inter­actions are present

Di-μ-chlorido-bis­[(2′-carb­oxybiphen­yl-2-carboxyl­ato-κO)(2,2′:6′,2′′-terpyridine-κ3 N,N′,N′′)cadmium(II)] hemihydrate

In the centrosymmetric dinuclear title compound, [Cd2(C14H9O4)2Cl2(C15H11N3)2]·0.5H2O, each of the CdII ions is coordinated by three N atoms from a chelating 2,2′:6′,2′′-terpyridine ligand, two bridging Cl atoms and one O atom of a 2′-carb­oxy-[1,1′-biphen­yl]-2-carboxyl­ate anion. The coordination environment is distorted octa­hedral. In the crystal, inter­molecular O—H⋯O hydrogen bonds link symmetry-related mol­ecules, forming an infinite chain. The half-occupancy water mol­ecule is disordered over two general sites with 0.25 occupancy and is, in turn, disordered over an inversion center

Interacting heavy fermions in a disordered optical lattice

We have theoretically studied the effect of disorder on ultracold alkaline-earth atoms governed by the Kondo lattice model in an optical lattice via simplified double-well model and hybridization mean-field theory. Disorder-induced narrowing and even complete closure of hybridization gap have been predicted and the compressibility of the system has also been investigated for metallic and Kondo insulator phases in the presence of the disordered potential. To make connection to the experimental situation, we have numerically solved the disordered Kondo lattice model with an external harmonic trap and shown both the melting of Kondo insulator plateau and an compressibility anomaly at low-density

5-(4-Methyl­phen­yl)-1,3,4-oxadiazol-2-amine

In the crystal structure of the title compound, C9H9N3O, adjacent mol­ecules are linked through N—H⋯N hydrogen bonds into a three-dimensional network