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- W1985992794 abstract "C22H25N20~-.C9HI606PS2-, Mr=664.77, monoclinic, P2, a = 8.3925 (14), b = 8.0054 (14), c = 24.3050 (42)/~,/3 = 98.518 (6) °, V = 1614.9 (6) A), Z = 2, Dm = 1.42 (3), Dx = 1.37 g cm -3, A(Mo gte) = 0.7107A~ (Zr filter, no monochromator), /z = 2.2 cm- 1, F(000) = 704, T = 294 (2) K, R -- 0.049 and wR = 0.046 for 2417 unique observed reflections. The crystal structure consists of sheets of N- methylstrychninium cations in a bilayer, which alternate with sheets of phosphorodithioate anions, also in a bilayer. The anion is a dealkylated precur- sor to a specific stereoisomer of isomalathion, and its two chiral centers are identified as S at the P atom and R at the C atom. Experimental. Berkman prepared the title compound using a procedure modified from that of Hilgetag (1969), and obtained suitable crystals (as large flat parallelepipids) from 1:5 methanol-ether. The crystal is composed of N-methylstrychninium cations (I) and phosphorodithioate diester anions (II)." @default.
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- W1985992794 date "1993-03-15" @default.
- W1985992794 modified "2023-10-18" @default.
- W1985992794 title "Structure of 19-methylstrychninium (S)-{S-[(R)-1,2-di(ethoxycarbonyl)ethyl] O-methyl phosphorodithioate}" @default.
- W1985992794 doi "https://doi.org/10.1107/s0108270192007637" @default.
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