A new packing variant of catena-poly[[aquachlorocopper(II)]-mu-pyrazine-2-carboxylato-O,N:N'].
Single crystals of the title coordination polymer, [CuCl(C5H3N2O2)(H2O)], have been prepared by hydrothermal synthesis. The compound is composed of infinite one-dimensional chains of pseudo-square-pyramidal Cu(II) ions connected via pyrazine-2-carboxylate ligands. A network of O-H...O hydrogen bonding between adjacent chains is responsible for a bilayer structure different from the previously reported polymorph.
Synthesis and structural characterization of 2-pyrazinecarboxylate zinc compound {[Zn2(Pyz)2(H2O)4] · SO4}n (Pyz = 2-pyrazinic acid)
A solvothermal reaction of 2-pyrazinic acid with Zn(SO4)2 · 7H2O yielded the title complex of the formula {[Zn2(Pyz)2(H2O)4] · SO4}n (I). X-ray diffraction study shows that the complex I crystallizes in mono-clinic system, space group P21/c, with lattice parameters a = 11.2687(6), b = 7.3511(4), c = 11.8506(7) Å, β = 95.070(2)°, V = 977.83(9) Å3, Z = 4, and ρcalcd = 2.184 mg m−3.
Handbook of Concrete Engineering
Handbook of concrete engineering , Handbook of concrete engineering , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی