Syntheses, structures, and magnetic properties of two kinds of unique heterometallic chains with mixed-bridging ligands of tricyanometalate and alkoxide.
The reactions of copper(II) salts, 1,3-bis(dimethylamino)-2-propanol (bdmapH) or 1,3-bis(amino)-2-propanol (bapH) and [(Tp)Fe(CN)(3)](-) (Tp = tris(pyrazolyl)hydroborate) gave four mixed-bridged heterometallic one-dimensional (1D) coordination polymers, {[(Tp)(2)Fe(2)(CN)(6)(OAc)(bdmap)Cu(2)(H(2)O)]·2H(2)O}(n) (1, HOAc = acetic acid), {[(Tp)(2)Fe(2)(CN)(6)(Pa)(bdmap)Cu(2)(H(2)O)]·2MeCN}(n) (2, HPa = propionic acid), {[(Tp)(2)Fe(2)(CN)(6)(Tfa)(bdmap)Cu(2)(H(2)O)]·2MeCN}(n) (3, HTfa = trifluoroacetic acid), and {[(Tp)(2)Fe(2)(CN)(6)(OAc)(bap)Cu(2)(MeOH)]·2MeOH·H(2)O}(n) (4). Complexes 1-3 show unique branched zigzag chain structures and complex 4 exhibits as a steplike chain. Ferromagnetic interactions between Fe(III) and Cu(II) ions by bridging cyanides are observed in all complexes. Strong antiferromagnetic interactions are presented between the Cu(II) ions in complexes 1-3, whereas similar antiferromagnetic coupling between Cu(II) ions is obviously weakened in complex 4 because of the distortion of penta-coordinated Cu(II) ions.
Kang
Ling-Chen
LC
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, PR China.
Chen
Xin
X
Wang
Hui-Sheng
HS
Li
Yi-Zhi
YZ
Song
You
Y
Zuo
Jing-Lin
JL
You
Xiao-Zeng
XZ