TY - JOUR
T1 - Synthesis, structural and magnetic study of two new alternating 1D azido-bridged cobalt(II) complexes.
AU - Mautner, Franz A.
AU - Sudy, Beate
AU - Berger, Christian
AU - Fischer, Roland C.
AU - Vicente, Ramon.
N1 - M1 - Copyright (C) 2017 American Chemical Society (ACS). All Rights Reserved.
CAPLUS AN 2012:824755(Journal; Online Computer File)
PY - 2012
Y1 - 2012
N2 - Two new 1-dimensional azido-bridged Co(II) compds. [Co2(μ1,1-N3)2(μ1,3-N3)2(4-Etpy)4]n (1) and [Co3(μ1,1-N3)4(μ1,3-N3)2(3-pic)6]n (2) (4-Etpy = 4-ethylpyridine, 3-pic = 3-picoline) were structurally and magnetically characterized. Compd. 1 crystallizes in the monoclinic system with space group Cc and compd. 2 in the triclinic system with space group P1̅. In both complexes the Co centers are octahedrally coordinated by two pyridine deriv. ligands in trans-conformation and four azido groups. In 1, the azido groups act in the alternating di-EO/di-EE bridging mode to form the 1-dimensional system oriented along the a-axis of monoclinic unit cell, whereas in 2, the 1-dimensional system along the triclinic c-axis is built by the di-EO/di-EO/di-EE topol. of azido bridges, the 1st example for Co(II) ions. The magnetic properties of 1 and 2 are reported. Both complexes obey the Curie-Weiss law at high temps. with neg. Weiss consts. of θ = -65.9 and -63.6 K for 1 and 2, resp. At low temps. 1 and 2 are weak ferromagnets due to spin canting. [on SciFinder(R)]
AB - Two new 1-dimensional azido-bridged Co(II) compds. [Co2(μ1,1-N3)2(μ1,3-N3)2(4-Etpy)4]n (1) and [Co3(μ1,1-N3)4(μ1,3-N3)2(3-pic)6]n (2) (4-Etpy = 4-ethylpyridine, 3-pic = 3-picoline) were structurally and magnetically characterized. Compd. 1 crystallizes in the monoclinic system with space group Cc and compd. 2 in the triclinic system with space group P1̅. In both complexes the Co centers are octahedrally coordinated by two pyridine deriv. ligands in trans-conformation and four azido groups. In 1, the azido groups act in the alternating di-EO/di-EE bridging mode to form the 1-dimensional system oriented along the a-axis of monoclinic unit cell, whereas in 2, the 1-dimensional system along the triclinic c-axis is built by the di-EO/di-EO/di-EE topol. of azido bridges, the 1st example for Co(II) ions. The magnetic properties of 1 and 2 are reported. Both complexes obey the Curie-Weiss law at high temps. with neg. Weiss consts. of θ = -65.9 and -63.6 K for 1 and 2, resp. At low temps. 1 and 2 are weak ferromagnets due to spin canting. [on SciFinder(R)]
KW - prepn azido bridged cobalt ethylpyridine picoline coordination polymer
KW - crystal structure azido bridged cobalt ethylpyridine picoline coordination polymer
KW - magnetic property azido bridged cobalt ethylpyridine picoline coordination polymer
U2 - 10.1016/j.poly.2012.04.039
DO - 10.1016/j.poly.2012.04.039
M3 - Article
SN - 0277-5387
VL - 42
SP - 95
EP - 101
JO - Polyhedron
JF - Polyhedron
IS - 1
ER -