Magnetic Resonance Center
Five Varian high-field NMR spectrometers are maintained and operated in the Magnetic Resonance Center in the Boston College Chemistry Department: a 600 MHz VNMRS, a 500 MHz VNMRS, a 500 MHz INOVA, a 400 MHz VNMRS, and a 400 MHz MR-400. All the spectrometers are equipped with pulsed-field gradients and variable-temperature controllers, and are running the most up-to-date Varian VNMRJ software on Dell OptiPlex 9010 computers in the Linux Centos 6.10 operating system. Additionally, all the NMR systems except for the INOVA 500 are equipped with an automatic probe tuning and matching ProTune® accessory.
The probes available in the Center allow NMR users to observe most spin-active nuclei and perform nearly all state-of-the-art 1D, 2D, and multi-dimensional liquids NMR experiments. A combination of on-line and open-access reservation schemes are used to ensure the most efficient use of the instruments.
Two additional Dell workstations running the same software as the spectrometers (as well as a variety of other data processing software programs) allow users to process their data to prepare reports and presentation graphics in the facility. Users can also remotely access and transfer data to their personal computers within the Boston College network with ease. Other remote spectrometer access options (such as VNC) are also in place for teaching and maintenance purposes. A large selection of printing and plotting devices are available in the facility for student use, and all NMR data is remotely stored in back-up servers by the IT specialists at Boston College.
The latest addition to the Magnetic Resonance Center is a new departmental EMX-Plus EPR spectrometer from the Bruker Biospin Corporation. Complete with a cryogen free VT system that allows the samples to reach temperatures as low as 10K, this instrument provides crucial support to research groups working on high-spin metal complexes containing iron or cobalt centers. Along with an ER 073 10” double-yoke magnet, this system has a Hall field controller and signal channel module that are both digital and ultra-high resolution, an X-band, solid state low noise microwave bridge and a high sensitivity probehead with an optical window for running CW-EPR experiments in X-band. The system runs on Xenon 1.1 acquisition software in a Linux environment, with WIN-EPR, WIM-SimFonia as well as the XSophe software package for the simulation of EPR spectra.