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The data collection crystal was a pale yellow rectangular rod with a pointed end. Examination of the diffraction pattern on a diffractometer indicated an orthorhombic crystal system. All work was done at 150 K, using a cryostream cooler. The data collection strategy was set up to measure an octant of reciprocal space with a redundancy factor of 3.6, which means that 90% of the reflections were measured at least 3.6 times. φ and ω scans with a frame width of 1.0° were used. Data integration, scaling, and merging were done computationally.24 Merging the data and averaging the symmetry equivalent reflections resulted in an Rint value of 0.054. The structure was solved by the direct methods procedure.25 Full-matrix least-squares refinements based on F2 were performed computationally.26, 27 The asymmetric unit contains two of the bowl-shaped molecules, with each containing a crystallographic mirror plane, thr
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The Turbomole basis set library is available via ftp from ftp://ftp.chemie.uni-karlsruhe.de/pub/basen.
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The Turbomole basis set library is available via ftp from ftp://ftp.chemie.uni-karlsruhe.de/pub/basen.
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