Three novel 1-D coordination polymers consisting of {Mn[N(CN) 2 ] 2 } structural units and L ؍ 2 pyridines (i.e., 2), 2,2-bipyridine (i.e., 3), and 4,4-bipyridine (i.e., 4) have been synthesized and characterized by single crystal X-ray crystallography and magnetic susceptibility studies. Compound 2 crystallizes in the monoclinic space group P2
/n with a ؍ 7.5401 (7) A s , b ؍ 13.2643 (4) A s , c ؍ 8.6973 (9) A s , ؍ 114.954 (2)3, V ؍ 788.65 (11) A s 3 , and Z ؍ 2 with R(R w ) ؍ 0.0451 (0.1067). In 2, linear 1-D chains containing trans--[N(CN) 2 ] ؊ ligands and two pyridine ligands are formed while cis--[N(CN) 2 ] ؊ coordination gives rise to zigzag chains with chelated 2,2-bipyridine ligands in 3 which crystallizes in the monoclinic space group C2/c with a ؍ 6.6769 (3) A s , b ؍ 17.2008 (2) A s , c ؍ 13.0142 (4) A s , b ؍ 90.110 (4)3, V ؍ 1494.65 (8) A s 3 , and Z ؍ 4 with R(R w ) ؍ 0.0514 (0.1218). Interestingly, incorporation of 4,4-bipyridine into the structure of 4 produces a unique cylindrical 1-D chain consisting of four trans--[N(CN) 2 ] ؊ :s, one coordinated water, and an unusual monodentate 4,4-bipyridine ligand. X-ray crystallography established the orthorhombic space group Iba2 with a ؍ 22.378 (6) A s , b ؍ 22.517 (5) A s , c ؍ 13.519 (5) A s , V ؍ 6812 (3) A s 3 , and Z ؍ 8 with R(R w ) ؍ 0.0384 (0.0861). The magnetic susceptibilities of each compound were studied in the 2+300 K temperature range and the data 5tted to the 1-D Fisher chain model for S ؍ 5/2 with g-values of 2.00 and intrachain exchange constants, J/k B ؍ ؊0.10, ؊0.17, and ؊0.24 K for 2, 3, and 4, respectively.