A Family of New Glutarate Compounds: Synthesis, Crystal Structures of: Co(H2O)5L(1), Na2[CoL2] (2), Na2[L(H2L)4/2] (3), {[Co3(H2O)6L2](HL)2} • 4H2O (4), {[Co3(H2O)6L2](HL)2} • 10H2O (5), {[Co3(H2O)6L2]L2/2} • 4H2O (6), and Na2{[Co3(H2O)2]L8/2] • 6H2O (7), and Magnetic Properties of 1 and 2 with H2L = HOOC-(CH2)3-COOH

Seven new glutaric acid complexes, Co(H(2)O)(5)L 1, Na(2)[CoL(2)] 2, Na(2)[L(H(2)L)(4/2)] 3, {[Co(3)(H(2)O)(6)L(2)](HL)(2)} center dot 4H(2)O 4, {[Co(3)(H(2)O)(6)L(2)](HL)(2)} center dot 10H(2)O 5, {[Co(3)(H(2)O)(6)L(2)]L(2/2)} center dot 4H(2)O 6, and Na(2){[Co(3)(H(2)O)(2)]L(8/2)] center dot 6H(2)O 7 were obtained and characterized by single-crystal X-ray diffraction methods along with elemental analyses, IR spectroscopic and magnetic measurements (for 1 and 2). The [Co(H(2)O)(5)L] complex molecules in 1 are assembled into a three-dimensional supramolecular architecture based on intermolecular hydrogen bonds. Compound 2 consists of the Na(+) cations and the necklace-like glutarato doubly bridged (1)(infinity)[CoL(4/2)](2-) anionic chains, and 3 is composed of the Na(+) cations and the anionic hydrogen bonded ladder-like (1)(infinity)[L(H(2)L)(4/2)](2-) anionic chains. The trinuclear {Co(3)(H(2)O)(6)L(2)](HL)(2)} complex molecules with edge-shared linear trioctahedral [Co(3)(H(2)O)(6)L(2)](2+) cluster cores in 4 and 5 are hydrogen bonded into two-dimensional (2D) networks. The edge-shared linear trioctahedral [Co(3)(H(2)O)(6)L(2)](2+) cluster cores in 6 are bridged by glutarato ligands to generate one-dimensional (1D) chains, which are then assembled via interchain hydrogen bonds into 2D supramolecular networks. The corner-shared linear [Co(3)O(16)] trioctahedra in 7 are quaternate bridged by glutarato ligands to form 1D band-like anionic {[Co(3)(H(2)O)(2)]L(8/2)}(2+) chains, which are assembled via interchain hydrogen bonds into 2D layers, and between them are sandwiched the Na+ cations. The magnetic behaviors of 1 and 2 obey the Curie-Weiss law with chi(m) = C/(T - Theta) with the Curie constant C = 3.012(8) cm(3). mol(-1) . K and the Weiss constant Theta = -9.4(7) K for 1, as well as C = 2.40(I) cm(3) . mol(-1) . K and Theta = -2.10(5) K for 2, indicating weak antiferromagnetic interactions between the Co(II) ions.