This material is a work in progress and is not intended to be definitive. The synthesis of poly-dentate aromatic ligands and their application for assembly of functional supramolecular complexes. A total of 4548 frames were collected with a frame width of 1 covering up to 66.21 with 97.7 completeness accomplished. The absolute configurations of 1 and 2 were analyzed using Hooft methods. All calculations were performed using the SHELXS-97 program and refined by full-matrix least-squares refinements based on F 2 with SHELXL-97.
How to use SQUEEZE – this is old… the latest SQUEEZE comes with instructions on it’s proper use! Single-crystal X-ray diffraction data were collected on a Bruker KAPPA APEX II DUO diffractometer using graphite-monochromated Mo-K radiation ( 0.71073 Å). In light of this success the Department has recently procured as Bruker Apex Duo single-crystal X-ray Diffractometer. The intensity data was collected on a Bruker Apex DUO 4 K CCD diffractometer using an exposure time of 5 s/frame. Crystallographic data were collected at 100 K on a Bruker APEX DUO diffractometer with APEX II CCD, using CuK radiation. Guidelines for using the diffractometer and refining crystal structures:
Please download our sample information form and send it with your crystals. Science faculty members in the Hudson Valley who are interested in using the new instrument to obtain X-ray crystal structures in support of their research should contact Professor Tanski. The facility has also been supported by The Office of the Dean of the Faculty and Department of Chemistry at Vassar College, the Vassar College Committee on Research, the Chemistry Department of Bard College and a gift to Vassar Chemistry Professor Miriam Rossi.
The frames are integrated with the Bruker SAINT software package using a narrow-frame algorithm. National Science Foundation: NSF-MRI 0521237 (2005) and the American Recovery and Reinvestment Act (ARRA) of 2009 through NSF-RUI 0911324. The APEX-Q platform combines a Q-q- front-end and a high field. Single crystal x-ray diffraction (XRD) data are recorded on Bruker Smart Apex Duo diffractometer at 100 K and 296 K using MoK radiation ( 0.71073 Å).
X-ray crystallography at Vassar College is supported by generous instrumentation grants from the U.S. These features make the instrument useful for a large variety of samples, including tiny, weakly diffracting and air-sensitive materials. The dual wavelength instrument is equipped with a MonoCap X-ray waveguide that increases the collimated Mo X-ray intensity by a factor of 2.5, an intense Cu IuS microsource, an APEX II charge-couple device (CCD) detector with ten-fold better sensitivity than first generation CCD’s and an Oxford liquid nitrogen cryostream. The Department of Chemistry at Vassar maintains an APEX2 DUO platform X-ray diffractometer from Bruker Advanced X-ray Solutions.