Facilities

EPR spectrometer

Bruker EMX Series

equipped with a liquid helium

cryostat (right)

UV-vis spectrometer

Cary 50 Scan

UV-vis spectrometer

Agilent 8453

equipped with Unisoku UnispeKs crysotat

UV-vis spectrometer

Agilent 8453

equipped with Unisoku UnispeKs cryostat

Potentiostat

ALS

Gas chromatograph

HP6890 series

equipped with auto sampler

Solvent purification system

SciMatCo

Glove box 2

VAC under N2 atmosphere

Glove box 3

VAC under N2 atmosphere

equipped with freezer

Glove box 4

VAC under Ar atmosphere

equipped with cold well, freezer & liquid nitrogen feedthrough

Glove box 5

VAC Nexus I under Ar atmosphere

Xe lamp house

ORIEL

Glove box 1

VAC under Ar atmosphere

equipped with cold well

Electron paramagnetic resonance (EPR) spectroscopy provides information about the spin states of paramagnetic metal complexes. Our perpendicular mode cavity is capable of detecting odd numbers of electrons and is typically operated at room temperature or at 77K with liquid N2. The dual mode cavity gives highly sensitive signals in both perpendicular and parallel modes using a liquid helium cryostat.

Ultraviolet-visible (UV-vis) spectroscopy provides information about electronic transitions in metal complexes and organic compounds.

The Cary 50 and 60 Scan can easily collect single spectra for characterization of complexes, or can be used to monitor reaction progress via the kinetics mode. An attached circulator permits study of complexes at –10˚C to 100˚C.

The potentiostat is used for electrochemical analyses such as cyclic voltammetry (CV), differential pulse voltammetry (DPV), and bulk electrolysis. All of the glove boxes are equipped with leads that allow electrochemical studies to be conducted under inert atmosphere.

Our solvent purification system dries various degassed organic solvents by passing them through activated columns. These O2 and moisture- free organic solvents can then be brought directly into the glove box without the need for prior distilling. Furthermore, some of the solvents are plumbed directly into certain glove boxes. The solvents on our purification system include THF, DMF, MeCN, DMSO, DMA, DCM, pentane, ether, and methanol.

Gas chromatography is used for the analysis of organic products in the reactions of metal complexes. Our HP6890 is equipped with flame ionization detector (FID) and an auto sampler.

The Xe lamp is used to conduct photochemical reactions with our metal complexes.

The glove boxes are used for reactions and compounds that are sensitive to O2 and H2O. Three boxes are equipped with Ar atmospheres, and two are under an atmosphere of N2. Two boxes have –35 ºC freezers and two have a cold well. One box has a liquid nitrogen feedthrough. This allows for air sensitive, unstable compounds to be prepared, recrystallized, and stored at low temperatures.

One glove box serves as a wetbox for the artificial metalloprotein projects. This box is equipped with an atmosphere of N2.

The two Agilent 8453 spectrometers utilize photodiode array (PDA) detectors which allow spectra to be collected at 0.5 second intervals. These spectrometers are primarily used to monitor the reaction progress of metal complexes with substrates. Furthermore, in order to detect intermediates or to stabilize highly reactive species, they are equipped with Unisoku UnispeKs crysotats which can be used to monitor reactions at temperatures as low as –199˚C.