187533-19-3Relevant academic research and scientific papers
Structure and Magnetic Behavior of a New 1-D Compound with Simultaneous End-On Azido and Carboxylato Bridges. Unexpected Strong Ferromagnetic Coupling for a Cu-N-Cu Bond Angle of 111.9° as a Consequence of Ligand HOMOs Countercomplementarity
Escuer, Albert,Vicente, Ramon,Mautner, Franz A.,Goher, Mohamed A. S.
, p. 1233 - 1236 (1997)
The X-ray structure of the μ-carboxylate-μ1.1-azido-bridged compound {[Cu(Hpht)(N3)]·H2O}n has been determined (Hpht = hydrogen phthalate). Crystal data: formula C8H7CuN3O5, monoclinic, P21/m (No. 11), a = 7.383(3) A?, b = 6.568(4) A?, c = 10.659(4) A?, β= 93.38(3)°, Z = 2. The compound is found to be a system formed by chains of copper atoms bridged simultaneously by syn-syn carboxylato and end-on azido bridges. The copper chains are linked by a second carboxylato bridge, giving a 2-D compound. Magnetic measurements indicate strong ferromagnetic coupling, which affords a good example of unexpected magnetic properties due to the countercomplementarity of the superexchange pathways of the two ligands.
