## CURRENT TOPICS. 425 As advantages it is claimed that but a single image is necessary for photography in colors, that the same film permits projection in black and white or in colors, that the simplicity of the process makes it accessible to all, that commercial photographic and projection appar
β¦ LIBER β¦
On the Aurora Borealis of April 1 and 2, 1873
β Scribed by William F. Denning
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 82 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0035-9009
No coin nor oath required. For personal study only.
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## Abstract In the hydroformylation of 1,1,1βtrideuterioβ2βbutene with Rh~4~ (CO)~12~ the deuterated pentanals formed contain 75% of 5,5,5βtrideuterioβpentanal, the rest being substantially 2,2βdideuterioβpentanal. On the contrary, using Co~2~ (CO)~8~ as the catalyst precursor, position 1 and 4 are