The reaction of K-3[Cr(CN)(6)] and the copper(II) bis-diamino complex of the ligand 1,3-diaminopropane (tn) led to the new cyanide-bridged 3D polymer {[(Cu(tn)(2))(3)(Cr(CN)(6))][Cr(CN)(6)]}(infinity) (1). Crystallographic data for 1: trigonal space group R (3) over bar, a = b = 15.4908(11), c = 16.7699(13) angstrom, Z = 3, V = 3485.0(4) angstrom(3), By the same reaction using trans-cyclohexane-(1R,2R)-diamine [1R,2Rchxn] or trans-cyclohexane-(1S,2S)-diamine [1S,2Schxn] as ligands, the chiral 1D polymers {[Cu(1R,2Rchxn)(2)](3)[Cr(CN)(6)](2)center dot 4.75H(2)O}(infinity) (2) and {[Cu(1S,2Schxn)(2)](3)[Cr(CN)(6)](2)center dot 4.25H(2)O}(infinity) (3), respectively, were obtained. 2 and 3 are isostructural and crystallize in the triclinic space group P1, with a = 8.5421(6), b = 12.6379(9), c = 16.1571 (111) angstrom, alpha = 104.594(5)degrees, beta = 98.425(6)degrees, gamma= 97.440(5)degrees, Z = 1, V = 1644.3(2) angstrom(3) for 2, and a = 8,5435(8), b = 12.6309(12), c = 16.1711(17) angstrom, alpha = 104.632 degrees, beta = 98.429(8)degrees, gamma = 97.375(8)degrees, Z = 1, and V = 1645.1(3) angstrom(3) for 3. The complexes have been characterized by X-ray crystallography, IR, and magnetic susceptibility measurements. The chirality of 2 and 3 has been confirmed by circular dichroism measurements in the solid state. From the magnetic point of view, 1 shows 3D ferromagnetic ordering at ca. 4K, and 2 shows a weak intrachain ferromagnetic exchange, as a result of magnetic orbital orthogonality between Cr(III) and Cu(II) in the chain, with very long Cu-N(cyano) distances (2.665(5) and 2.671(5) angstrom) due to the long Jahn-Teller axis of the copper(II) ions.