3 research outputs found
The Dithiolate-Bridged Diiron Hexacarbonyl Complex Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)Fe(CO)<sub>3</sub>]<sub>2</sub> as a Water-Soluble PhotoCORM
No full textThe water-soluble dimercaptopropanoate-bridged
diiron hexacarbonyl
complex Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)ÂFeÂ(CO)<sub>3</sub>]<sub>2</sub> has been prepared, and the X-ray crystal structure
and infrared, UV–visible, and ESI spectra of the complex have
been obtained. The complex is shown to behave as a photoCORM, whereby
all six CO ligands are released within 30 min of visible-light irradiation.
Gas-phase FTIR spectroscopy has been used to quantify the release
of CO into the headspace above the aqueous solution. The resulting
product, tentatively assigned to an iron thiolate salt, is also water-soluble.
Cell viability studies show that Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)ÂFeÂ(CO)<sub>3</sub>]<sub>2</sub> is not cytotoxic
toward normal epithelial cells
Significant O–H Bond Weakening in CpMn(CO)<sub>2</sub>(CH<sub>3</sub>OH): Evidence for the Generation of the CpMn(CO)<sub>2</sub>(CH<sub>3</sub>O) Radical upon H Atom Abstraction by O<sub>2</sub>
No full textThe
UV–visible photolysis of CpMnÂ(CO)<sub>3</sub> in methanol
generates CpMnÂ(CO)<sub>2</sub>(CH<sub>3</sub>OH), which upon H atom
abstraction using either O<sub>2</sub>, dpph, or H<sub>2</sub>O<sub>2</sub> gives the CpMnÂ(CO)<sub>2</sub>(CH<sub>3</sub>O) radical complex.
The radical with a lifetime of 10 to 20 min has been mainly characterized
using FTIR and ESR spectroscopy and chemical oxidation studies. Together
with density functional theory calculations, it is shown that the
O–H bond is significantly weakened in the CpMnÂ(CO)<sub>2</sub>(CH<sub>3</sub>OH) complex compared to free methanol. NBO spin density
analysis suggests that the bond cleavage is facilitated by the formation
of the CpMnÂ(CO)<sub>2</sub>(CH<sub>3</sub>O) radical in which the
electron spin is localized at the metal center rather than at the
oxygen atom
The Dithiolate-Bridged Diiron Hexacarbonyl Complex Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)Fe(CO)<sub>3</sub>]<sub>2</sub> as a Water-Soluble PhotoCORM
No full textThe water-soluble dimercaptopropanoate-bridged
diiron hexacarbonyl
complex Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)ÂFeÂ(CO)<sub>3</sub>]<sub>2</sub> has been prepared, and the X-ray crystal structure
and infrared, UV–visible, and ESI spectra of the complex have
been obtained. The complex is shown to behave as a photoCORM, whereby
all six CO ligands are released within 30 min of visible-light irradiation.
Gas-phase FTIR spectroscopy has been used to quantify the release
of CO into the headspace above the aqueous solution. The resulting
product, tentatively assigned to an iron thiolate salt, is also water-soluble.
Cell viability studies show that Na<sub>2</sub>[(μ-SCH<sub>2</sub>CH<sub>2</sub>COO)ÂFeÂ(CO)<sub>3</sub>]<sub>2</sub> is not cytotoxic
toward normal epithelial cells
