Herein, we report the coordination properties towards Zn(ii), Cd(ii) and Pb(ii) of two hexadentate ligands containing pyridinecarboxylate groups with ethane-1,2-diamine (bcpe) or cyclohexane-1,2-diamine (bcpc) backbones. The X-ray crystal structures of [Zn(bcpe)], [Cd(bcpe)] and [Cd(bcpc)] show hexadentate binding of the ligand to the metal ions, with the coordination polyhedron being best desc...

A transition-metal-free direct oxidative trifluoromethylation of unsymmetrical biaryls has been achieved by the simple combination of trifluoromethanesulfinate and phenyliodine bis(trifluoroacetate). The trifluoromethylation is selectively observed in the electron-rich arenes.

The title compound, C(18)H(20)N(2)O(2), was prepared by Mannich-type reaction of phenol, ethane-1,2-diamine and formaldehyde. The heterocyclic rings adopt half-chair conformations. The acyclic methyl-ene groups attached to the N atoms are in an axial position. In the crystal, weak C-H⋯O hydrogen bonds link the mol-ecules into dimers. These dimers are further connected via C-H⋯π contacts.

The asymmetric unit of the title compound, [Ni(C(2)H(8)N(2))(3)](C(8)H(4)O(5))·H(2)O, contains one [Ni(en)(3)](2+) cation (en is ethane-1,2-diamine), one 5-hy-droxy-isophthalate dianion and one water mol-ecule. In the cation, the Ni(2+) ion is coordinated by six N atoms from three ethyl-enediamine ligands in a distorted octa-hedral geometry. The complex ions and water mol-ecules are linked by w...

Histamine intolerance is characterized by a large variety of diffuse symptoms, whichcannot bewell attributed, andwhich cannot be graspedbyclassical clinical diagnostics. The authors present a new, three-phase concept for the diagnosis and therapeutical support of this clinical picture. The steps include a standardized anamnestic questionnaire, clinical and chemical evidence of the diamine oxida...

The title complex, [CuCl(2)(C(9)H(13)N(3))], is mononuclear and contains a five-coordinate Cu(II) atom. The geometry of the Cu(II) atom can be described as tetra-gonal-pyramidal derived from the calculation of the value τ = 0.102. The three N atoms of the pyridine and ethane-1,2-diamine ligands and one Cl atom belong to the basal plane and the other Cl atom represents the axial position of the ...

Thin film composite membranes of polyamide prepared by vapour phase interfacial polymerization between a diamine and an acyl chloride are applied to nanofiltration.