A Five-Atom Molecule which Enantiomerizes in a Single Step via Chiral Transition States
✍ Scribed by Dipl. Chem. Michael Mauksch; Prof. Dr. Paul von Ragué Schleyer
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 585 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0044-8249
No coin nor oath required. For personal study only.
✦ Synopsis
This compound was prepared analogously except that the sealed tube was heated at 85 "C for 80 hours. Orange-yellow, cube-shaped single crystals were isolated in 70% yield. Mid-IR spectrum in the CO region: i =1994(s), 1910(sh), 1898(s), 1884(s), and 1863(sh) cm-'. 3: The sealed Pyrex tube containing [Mn,(CO),,] (80 mg, 0.2 mmol), Na,Te, (120 mg, 0.4 mmol), Ph,PBr (252 mg, 0.6 mmol), and 0.4 mL EtOH was heated at 85°C for 14 hours. After washing with ethanol and diethyl ether, black single crystals of 3 were separated by hand in about 55% yield. Mid-IR spectrum in the CO region: t = 2030 (s, sharp), 1962(vs, broad), 1929(s, shoulder), 1883(s, multiple) cm-'. Semi-quantitative elemental analysis by SEM-EDAX: P/Mn/Te = 1/2.07/3.11.
[16] 4: triclinic, space group P i (no. 2), a = 20.70( 1), 6 = 23.40(1), c = 12.837(5)A,~ = 91.86(4),j3 = 90.50(4),~ = 69.84(4)", V = 5835(9)A3,2 = 2; 4: triclinic, space group Pi (no. 2), a = 10.162(6), b = 11.667(7), c = 16.665(9) A, u = 107.15(5), B = 92.75(5), y = 113.44(4)", V = 1701(4) A3, z = 2 .