The crystal and molecular structures of axial–equatorial and axial–axial bis(4,6-dimethyl-2-thioxo-1,3,2-dioxaphosphorinanyl) oxide
✍ Scribed by Wieczorek, M. W. ;Sheldrick, W. S. ;Karolak-Wojciechowska, J. ;Mikołajczyk, M. ;Witczak, M. ;Ziemnicka, B.
- Book ID
- 114526387
- Publisher
- International Union of Crystallography
- Year
- 1979
- Weight
- 523 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0567-7408
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## Abstract Proton, ^13^C and ^31^P n.m.r. spectra of the diastereoisomeric 2‐diphenylphosphino‐2‐oxo‐4‐methyl‐1,3,2‐dioxaphosphorinans indicate that the diphenylphosphino group is essentially axial for the __trans__ isomer, whereas it is predominantly equatorial in the case of the __cis__ isomer.
The crystal structure of the title compound (3) was determined by the X-ray diffraction technique from diffractometer intensity measurements: C,H, O& monoclin{c space group P2, c, a = 12.644( 1) A, b = 6.102(1) A, c = 12.920(2) 1, B = 110.78(1)", 2193 reflections, and R = 0.043. The molecule of 3 ad