catena-Poly[[tetra-μ-formato-κ8 O:O′-dicopper(II)]-μ-hexamethylenetetramine-κ2 N 1:N 5]
نویسندگان
چکیده
In the title polymeric compound, [Cu2(HCO2)4(C6H12N4)] n , the Cu(II) atom is five-coordinated in a square-pyramidal geometry that is defined by four O atoms from four formate ligands and one N atom from a hexa-methyl-ene-tetra-mine ligand. The two Cu(II) atoms are separated by 2.6850 (7) Å, and together with the four formate ligands they form a paddle-wheel unit. The hexa-mine ligand uses only two of its four N atoms to link Cu2 cluster units, affording a zigzag chain running along the b-axis direction. The hexa-mine ligand lies on a mirror plane.
منابع مشابه
catena-Poly[[tetra-μ-benzoato-κ8 O:O′-dicopper(II)]-μ-[N-(pyridin-4-yl)nicotinamide]-κ2 N:N′-[dibenzoato-κ2 O-copper(II)]-μ-[N-(pyridin-4-yl)nicotinamide]-κ2 N:N′]
In the polymeric title compound, [Cu(3)(C(7)H(5)O(2))(6)(C(11)H(9)N(3)O)(2)](n), square-planar-coordinated Cu(II) ions on crystallographic inversion centres are bound by two monodentate benzoate anions. The resulting [Cu(benzoate)](2) fragments are joined to centrosymmetic [Cu(2)(benzoate)(4)] paddlewheel clusters [Cu⋯Cu = 2.6331 (5) Å] by means of bridging N-(pyridin-4-yl)nicotinamide (4-pna) ...
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In the title compound, [Ni(CHO(2))(2)(C(4)H(4)N(2))(H(2)O)], the nickel(II) cations are coordinated by three O-bonded-formato anions, two N-bonded-pyrazine ligands and one water mol-ecule in an octa-hedral coordination mode. The nickel(II) cations are connected by μ-1,3-bridging formato anions and N,N'-bridging pyrazine ligands into a three dimensional coordination network. The asymmetric unit ...
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