Oxy- and Thio- Phosphorus Acid Derivatives of Tin. V. The X-ray Crystal and Molecular Structure of Bis-(O,O'-Diisopropyldithiophosphate)diphenyltin(IV), a Monomeric, Molecular, Virtual Polymer.
Abstract
The position of the tin atom was obtained from a Patterson map, and found to lie on the special position 0,0,0 (the crystallographic center of symmetry). The positions of the non-hydrogen light atoms were located by a succession of block-diagonal least squares refinements followed by a difference Fourier synthesis. Subsequent cycles of least-squares refinement allowed the thermal parameters to vary isotropically, initially, and anisotropically in later stages, to yield an R-factor of 0.054 for all data. At this point, correction was made for the anomalous dispersion of tin, and the structure further refined before all non-methyl hydrogen atoms were located from a final difference Fourier synthesis. Refinement was concluded when shifts in all parameters were less than one-third of their corresponding standard deviation. The final R factor was 0.033 for the 2599 reflections included in the least-squares calculations and 0.0522 over all data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 19, 1979
- Accession Number
- ADA078679
Entities
People
- D. Van Der Helm
- I. Haiduc
- Jerold J. Zuckerman
- K. C. Molloy
- M. B. Hossain
Organizations
- University of Oklahoma