L2,3-edge x-ray absorption near-edge spectroscopy analysis of photoisomerism in solid ruthenium-sulfur dioxide complexes

DOI: 10.1088/0953-8984/25/8/085505
PMID: 23360869

Authors: Anthony Phillips (University of Cambridge) , Jacqui Cole (University of Cambridge; University of New Brunswick) , Kian Sing Low (University of Cambridge) , Giannantonio Cibin (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Physics: Condensed Matter , VOL 25 (8) , PAGES 316-323

State: Published (Approved)
Published: February 2013
Diamond Proposal Number(s): 6381

Abstract: Ru L-2,L-3 edge x-ray absorption near-edge spectroscopy spectra of four compounds [Ru(SO2)(NH3)(4)X]Y (X = water, Y = (+/-)-camphorsulfonate(2); X = water, Y = tosylate(2); X = isonicotinamide, Y = tosylate(2); X = pyridine, Y = triflate(2)) are reported before and after optical excitation, which causes photoinduced linkage isomerism of the SO2 ligand. Principal component analysis reveals consistent changes in the spectra upon photoisomerization, suggesting a partial oxidation of the Ru ion. These results demonstrate that x-ray absorption near-edge spectroscopy is an effective means of probing photoinduced linkage isomerism.

Journal Keywords: Absorption; Absorption Spectroscopy; Ammonia; Excitation; Ligands; Oxidation; Pyridine; Ruthenium; Ruthenium Complexes; Ruthenium Ions; Solids; Spectra; Spectroscopy; Sulfur Dioxide; X Radiation

Subject Areas: Materials, Chemistry, Technique Development


Instruments: B18-Core EXAFS

Added On: 31/01/2013 10:48

Discipline Tags:

Molecular Complexes Physical Chemistry Technique Development - Chemistry Chemistry Materials Science

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) Extended X-ray Absorption Fine Structure (EXAFS) X-ray Absorption Near Edge Structure (XANES)