The title compound is prepared by adding aqueous ammonia to a solution of phosphoric acid containing a small amount of iron (III) ions (3%). It crystallizes in the monoclinic system, space group C2/c, a ؍ 16.8450(9) A > , b ؍ 9.6111(1) A > , c ؍ 17.6470(7) A > , and ؍ 90.91(2)°, R ؍ 0.031,
✦ LIBER ✦
Structure et étude raman du composé (C3H7NH3)2HgCl4
✍ Scribed by A.Ben Salah; A. Daoud; J.W. Bats; H. Fuess
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 343 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
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1. A new two-step process for the functionalisation of the non-activated methyl group 19 of 5u-steroids is described. In the first step UV.-irradiation of the 11-0x0-5a-pregnane derivate I in ethanol gives rise to a preferential attack of the photochemically excited carbonyl on methyl group 19, lead