Journal
INORGANIC CHEMISTRY
Volume 43, Issue 3, Pages 931-944Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic034999d
Keywords
-
Categories
Ask authors/readers for more resources
Six new metal-organic coordination networks based on linking unit 2,5-bis(4-pyridyl)-1,3,4-thiadiazole (L-1) or 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (L-3) and inorganic Cu-II, Cd-II, and Co-II salts have been prepared and structurally characterized by single-crystal X-ray analysis. Using L-1 to react with three different Cu-II salts, Cu(OAc)(2).H2O, Cu(NO3)(2).3H(2)O, and CuSO4.5H(2)O, respectively, two different one-dimensional (1-D) coordination polymers, {[Cu2L1(mu-OAc)(4)](CHCl3)(2)}(n) (1) [triclinic, space group P (1) over bar, a = 7.416(3) Angstrom, b = 8.207(3) Angstrom, c = 14,137(5) Angstrom, alpha = 100.333(7)degrees, beta = 105.013(6)degrees, gamma = 94.547(6)degrees, Z = 1] and {[CuL1(NO3)(2)](CHCl3)(0.5)}(n) (2) [monoclinic, space group C2/c, a = 28.070(8) Angstrom, b = 9.289(3) Angstrom, c = 15.235(4) Angstrom, beta = 113.537(5)degrees, Z = 8], and a chiral 3-D open framework, {[CuL1(H2O)(SO4)](H2O)(2)}(n) (3) [orthorhombic, space group P2(1)2(1)2(1), a = 5.509(2) Angstrom, b = 10.545(4) Angstrom, c = 29.399(11) Angstrom, Z = 4], were obtained. Reaction of L-1 and Cd(ClO4)(2).6H(2)O or CO(ClO4)(2).6H(2)O, in the presence of NH4SCN, yielded another 3-D open framework, {[CdL1(NCS)(2)](CH3OH)(1.5)}(n) (4) [monoclinic, space group C2/c, a = 28.408(10) Angstrom, b = 9.997(5) Angstrom, c = 7.358(4) Angstrom, beta = 99.013(8)degrees, Z = 4], or a 2-D network, {[Co(L-1)(2)(NCS)(2)](H2O)(2.5)}(n) (5) [orthorhombic, space group Pnna, a = 22.210(5) Angstrom, b = 12.899(3) Angstrom, c = 20.232(4) Angstrom, Z = 4]. When L-1 was replaced by L-3 to react with Co(ClO4)(2).6H(2)O and NH4SCN, another 2-D coordination polymer, [Co(L-3)(2)(NCS)(2)](n) (6) [monoclinic, space group P2(1)/c, a = 8.120(3) Angstrom, b = 9.829(4) Angstrom, c = 17.453(6) Angstrom, beta = 103,307(6)degrees, Z = 2], was constructed. These results indicate that the nature of the ligands, metal centers, or counteranions plays the critical role in construction of these novel coordination polymers. The interesting porous natures of two 3-D open frameworks 3 and 4 were investigated by TGA and XPRD techniques, and the magnetic properties of the Cu-II and Co-II complexes were studied by variable-temperature magnetic susceptibility and magnetization measurements.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available