1. P. E. Fanta and E. N. Walsh, J. Org. Chem., (in press).
2. Crystal and molecular structure of 9,9-dimethyl-9-azonia-bicyclo [6.1.0] nonane iodide
3. Crystal and Molecular Structure of trans-13,13-Dimethyl-13-azoniabicyclo [10.1.0]tridecane Iodide
4. Lorentz and Polarization Correction for the Buerger Precession Method
5. The least - squares program used in these calculations is a version of ORFLS by Busing, Martin and Levy, modified for use on a 32k I. B.M. 7040. The program uses the full matrix and utilizes a weighted residual factor. \documentclass{article}\pagestyle{empty}\begin{document}$ {\rm r} = \left[ {\frac{{\sum {{\rm w}({\rm F}_{\rm O} - {\rm kF}_{\rm C} )^2 } }} {{\sum {{\rm wF}_{\rm O} ^2 } }}} \right]^{1/2} $\end{document}. Unit weighting factors were used in refining this structure.