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- Title
Molecule-Based Magnetic Compounds Made Up from Dinuclear Ruthenium(II,III) Carboxylate and Dicyanidoargentate(I).
- Authors
Mikuriya, Masahiro; Tanaka, Yusuke; Yoshioka, Daisuke; Handa, Makoto
- Abstract
Mixed-metal complexes constructed from mixed-valent dinuclear ruthenium(II,III) carboxylate and dicyanidoargentate(I), K[Ru(OCCH)Ag(CN)]⋅4HO ( 1) and K[Ru{OCC(CH)}(Ag(CN))]⋅3HO ( 2), were synthesized and characterized by elemental analysis and IR and UV-visible-NIR spectroscopies. These data supported the formulation of mixed-metal adduct of Ru(OCCH) with two Ag(CN) for 1 and mixed-metal dimer of Ru{OCC(CH)} with aggregated {Ag(CN)} through argentophilic Ag ⋅⋅⋅ Ag interaction for 2, respectively. A broadband ( δ(Ru) → δ(Ru)) at near-IR and two bands( δ/ π (Ru) → σ□ u− O and π(Ru-O, Ru) → π(Ru)) at visible region were observed in the diffused reflectance spectra (920sh, 634, and 444 nm for 1 and 930sh, 638, and 478 nm for 2, respectively). Temperature dependence of magnetic susceptibility measurement (4.5-300 K) showed that the former is paramagnetic ( S = 3/2) with D (zero-field splitting parameter) = 78 cm and the latter weakly antiferromagnetic with g = 2.07, zJ (the exchange integral multiplied by the number of interacting neighbors) =−0.5 cm, and D = 90 cm.
- Subjects
RUTHENIUM carboxylates; MAGNETIC susceptibility; ANTIFERROMAGNETIC resonance; MOLECULAR magnetic moments; METALLIC bonds
- Publication
Journal of Superconductivity & Novel Magnetism, 2015, Vol 28, Issue 3, p1013
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-014-2646-5