An Azide-Bridged Copper(II) Ferromagnetic Chain Compound Exhibiting Metamagnetic Behavior

1997

The one-dimensional chain complex [Cu(2)(mgr;(2)-1,1-N(3))(2)(mgr;(2)-1,3-NO(3))(2)(mgr;(2)-1,3-Me(3)NCH(2)CO(2))(2)](n)() (1) contains three different bridge groups,mgr;(2)-1,1-azide (end-on),mgr;(2)-nitrate, andmgr;(2)-syn,syn-carboxylate, arranged so that the azide and carboxylate groups bridge equatorially and dictate the intrachain magnetic behavior between the copper magnetic orbitals. Variable-temperature magnetic susceptibility studies at low field, and magnetization studies at variable field, reveal dominant intrachain ferromagnetism (J = 26 cm(-)(1)) but also much weaker interchain ferromagnetism (THETAV; = 2.3 K) and antiferromagnetism (J(eff) = -0.18 cm(-)(1)). The structure has…