EPR study of copper(II) ions in zinc 1-malate trihydrate

✍ Scribed by Raffaele P. Bonomo; Angel J. Di Bilio; Francesco Riggi

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 345 KB
• Volume: 151
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(88)85275-8

✦ Synopsis

The EPR spectrum of Cu2+ ions in zinc I-malate trihydrate has been measured at 150 K for a large number of orientations of the applied magnetic field. Analysis yields the following spin Hamiltonian parameters: g, =2.0894* 0.0009, A,= -12.0 + 1.5, ~,=2.0879+0.0005,A,,=-8.7~1.0,R=-0.7~1.5,g,=2.4249+0.0005,A~=-120.1~0.9,P=9.9-t0.5, wheretheunitsofA and Pare lo4 cm-'. The Zeeman and hyperfine coupling tensors are coincident within 2". The spectrum shows forbidden transitions with abnormal intensity due to a large quadrupolar interaction. The direction of g_ points towards the hydroxyl oxygen while the g, and g,, directions he approximately along the metal-carboxylate oxygen bond.