A new two-dimensional manganese(II) coordination polymer with alternating double end-on and single end-to-end azido bridges: Crystal structure and magnetic properties

A novel 2D copper(II) coordination polymer with bidentate coligands and alternating double EO- and single EE-azido bridges

“…The CuÁ Á ÁCu separation in the dimer is 3.304 Å. These values lie in the typical range for double EO azido-bridging copper(II) complexes (2.9004-3.5034 Å) [12,23,[27][28][29][30]. In 1 each dinuclear unit is further linked through single EE azide bridges to four neighboring dimers, leading to a neutral 2D network with a pseudo-honeycomb (6, 3) topology (Fig.…”

“…It is also observed that the asymmetric EO complexes display magnetic properties from weak ferromagnetic to slightly antiferromagnetic, while the asymmetric EE complexes exhibit magnetic properties from slightly ferromagnetic to strongly antiferromagnetic [17][18][19][20][21][22]. However, the magnetism in multidimensional metal-azido complexes with both EO and EE bridging modes is complicated because of flexible azido-bridging modes and different bond parameters [11,23]. So how these factors act on the magnetic properties of the complexes has always been a hot topic of research.…”

“…While the same reactants were self-assembled in MeCN, a novel 2D azido-bridged copper(II) coordination polymer [CuL(N 3 ) 2 ] n (1) was obtained [25]. In continuation of our interest in complexes with azido bridges, herein we report the synthesis, structure, and magnetic properties of the first 2D copper(II)-azido coordination polymer with bidentate coligands and alternating double EO-and single EE-azido bridges [11,23]. In addition, complexes 1 and 2 are isomers.…”

Dimerization of Paramagnetic Trinuclear Complexes by Coordination Geometry Changes Showing Mixed Valency and Significant Antiferromagnetic Coupling through −Pt···Pt– Bonds

“…Figure shows the plots of the 2 J values against the M---M distances found in several 1D compounds in which high-spin Mn­(+2) ions (Table S2), ,− Co­(+2) ions (Table S3), ,,,− and Ni­(+2) ions (Table S4) ,,− are bridged by organic molecules or second metals. As a general trend, the strength of the interaction becomes weaker as the M---M distance becomes longer.…”