In the title compound, (C(3)H(7)N(6))(2)[Cu(C(7)H(3)NO(5))(2)]·6H(2)O, the coordination geometry of the Cu(II) atom can be described as distorted octa-hedral. The equatorial plane is defined by four O atoms from two 4-hydroxy-pyridine-2,6-dicarboxyl-ate ligands. The axial positions are occupied by the N atoms of the same ligands. There is an extensive three-dimensional hydrogen-bond network rei...

In the title compound, C(24)H(17)N(2)O(4) (+)·NO(3) (-)·0.25H(2)O, the central pyridine ring of the 2',6'-bis-(4-carb-oxy-phen-yl)-4,4'-bipyridin-1-ium cation is almost coplanar with one benzene ring [dihedral angle = 1.03 (5)°], while it makes dihedral angles of 9.59 (5)° with the other benzene ring and 13.66 (6)° with the pyridinium ring. In the crystal, N-H⋯O and O-H⋯O hydrogen bonds link th...

Background: An efficient, promoted tri-component catalytic reaction between barbituric acid (or N,N-dimethyl barbituric acid), 4-hydroxy coumarin, and a wide range of aryl aldehydes using zinc oxide nanowires (ZnO NWs) to obtain some new 4-hydroxychromenylarylmethyl-6-hydroxypyrimidine-2,4-diones is described. Method: The reactants were successfully condensed ...

The title compound, C(12)H(9)N(2) (+)·C(7)H(4)ClO(3) (-)·C(12)H(8)N(2)·C(7)H(5)ClO(3), contains one phenanthrolinium (Hphen) cation, one phenanthroline (phen) mol-ecule, one 4-chloro-2-hydroxy-benzoate anion (hcba) and one 4-chloro-2-hydroxy-benzoic acid (Hhcba) mol-ecule in the asymmetric unit. The phen mol-ecule is approximately parallel to Hphen, making a dihedral angle of 1.98 (6)°. The cen...

2,2-Bis[4-(2-methacryloxyethoxy)phenyl] propane (bisEMA; CAS 24448-20-2) is an epoxy methacrylate that was developed as a substitute for another epoxy methacrylate, 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy) phenyl]propane (bis-GMA; CAS 1565-94-2), used in dental composite resins. In the 2012 Finnish Product Register of Chemicals, bis-EMA appears in some anaerobic glues and in one gelcoat. Som...

Using a novel ditopic N-donor ligand, 1,4-bis(3-pyridylaminomethyl)benzene (L), four metal(II)-complexes formulated as CdL(SO4)(H2O)2 (1), CdL(1,3-bdc) (1,3-H2bdc = 1,3-benzene dicarboxylic acid) (2), PbL(1,3-bdc) (3) and ZnL(1/2)(2,5-tdc) (2,5-H2tdc = 2,5-thiophene dicarboxylic acid) (4) have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Co...