title: Lanthanide(III)-cobalt(II) heterometallic coordination polymers with radical adsorption properties.
abstract: Two new coordination polymers {[Ln(2)(PDA)(6)Co(3)(H(2)O)(6)] x xH(2)O}(n) [Ln = Nd, x = 7 (1); Ln = Gd, x = 3.25 (2); H(2)PDA = pyridine-2,6-dicarboxylic acid] have been prepared under hydrothermal conditions with Ln(NO(3))(3) x 6H(2)O, CoO, and H(2)PDA in a molar ratio of 2:3:6. X-ray crystallographic analyses reveal that they crystallize in the hexagonal group P6/mcc and exhibit a nanotubular 3D framework. The adsorption experiment shows that 1 and 2 can adsorb radicals, which is proven by electron paramagnetic resonance spectra with the characteristic bands of the radicals at g = 2.006 and 2.005, respectively.
authors.affiliation: Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Zhao
authors.forename: Bin
authors.initials: B
authors.lastname: Zhao
authors.forename: Yue
authors.initials: Y
authors.lastname: Ma
authors.forename: Wei
authors.initials: W
authors.lastname: Shi
authors.forename: Peng
authors.initials: P
authors.lastname: Cheng
authors.forename: Zong-Hui
authors.initials: ZH
authors.lastname: Jiang
authors.forename: Dai-Zheng
authors.initials: DZ
authors.lastname: Liao
authors.forename: Shi-Ping
authors.initials: SP
authors.lastname: Yan