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A new oxohalogenide compound Ba7 Co V6O21Cl4 was synthesized by a conventional high-temperature solid state reaction. The title compound is found to crystallize in the orthorhombic system of space group Cmcm with a = 16.726(4), b = 10.568(3), c = 14.808(4) ?, V = 2617.4(12) ?3, Z = 2, Mr = 1803.68, Dc = 3.411 g/cm3, μ = 11.396 mm-1, F(000) = 3172, the final R = 0.0314 and w R = 0.0750 for 1531 observed reflections with I > 2σ(I). Co2+ ions are coordinated by four O and two Cl atoms, forming a Co O4Cl2 octahedron, while V atoms are tetrahedrally coordinated, forming(V2O7)4- groups. The structure of Ba7 Co V6O21Cl4 exhibits a pseudo-onedimensional chain running along the c-axis. Magnetic measurements confirm that Ba7 Co V6O21Cl4 shows a paramagnetic behavior down to 2 K.
A new oxohalogenide compound Ba7 Co V6O21Cl4 was synthesized by a conventional high-temperature solid state reaction. The title compound is found to crystallize in the orthorhombic system of space group Cmcm with a = 16.726 (4), b = 10.568 (3), c = 14.808 (4) ?, V = 2617.4? 12? 3, Z = 2, Mr = 1803.68, Dc = 3.411 g / cm3,? = 11.396 mm-1, F and w R = 0.0750 for 1531 observed reflections with I> 2σ (I). Co2 + ions are coordinated by four O and two Cl atoms, forming a Co O4Cl2 octahedron, while V atoms are tetrahedrally coordinated, forming (V2O7) 4-groups. The structure of Ba7 Co V6O21Cl4 exhibits a pseudo-onedimensional chain running along the c-axis. Magnetic measurements confirm that Ba7Co V6O21Cl4 shows a paramagnetic behavior down to 2K.