Tuning the H?Atom Transfer Reactivity of Iron(IV)?Oxo Complexes as Probed by Infrared Photodissociation Spectroscopy

Infrared photodissociation spectroscopy

The infrared photodissociation spectra of [(CO2)n(H2O)m] (n = 1–4, m = 1, 2) are measured in the 3000–3800 cm range. The [(CO2)n(H2O)1] spectra are characterized by a sharp band around 3570 cm except for n = 1; [(CO2)1(H2O)1] does not photodissociate in the spectral range studied. The [(CO2)n(H2O)2] (n = 1, 2) species have similar spectral features with a broad band at ≈3340 cm. A drastic chang...

Cerebrovascular reactivity measured by near-infrared spectroscopy.

BACKGROUND AND PURPOSE The pressure reactivity index (PRx) describes cerebral vessel reactivity by correlation of slow waves of intracranial pressure (ICP) and arterial blood pressure. In theory, slow changes in the relative total hemoglobin (rTHb) measured by near-infrared spectroscopy are caused by the same blood volume changes that cause slow waves of ICP. Our objective was to develop a new ...

Renovascular reactivity measured by near-infrared spectroscopy.

Hypotension and shock are risk factors for death, renal insufficiency, and stroke in preterm neonates. Goal-directed neonatal hemodynamic management lacks end-organ monitoring strategies to assess the adequacy of perfusion. Our aim is to develop a clinically viable, continuous metric of renovascular reactivity to gauge renal perfusion during shock. We present the renovascular reactivity index (...

sphere controlled electron transfer of iron hangman complexes on electrodes probed by surface enhanced vibrational spectroscopy †

Iron hangman complexes exhibit improved catalytic properties regardingO2 and H2O2 reduction, which are attributed to the presence of a proton donating group in defined vicinity of the catalytic metal centre. Surface enhanced resonance Raman (SERR) and IR (SEIRA) spectro-electrochemistry has been applied concomitantly for the first time to analyse such iron hangman porphyrin complexes attached t...

Infrared Photodissociation Spectroscopy of Cluster Anions in the Gas Phase