1,2,3-Dithiazolyl and 1,2,35-Dithiadiazolyl Radicals as Spin-Bearing ...

Compound Name: 4-(2′-pyrimidyl)-1,2,3,5-diselenadiazolium chloride
MW: 312.5 g/mol
Synthesis and Structure:
Appearance:
Bright orange
powder
Lit. and/or
notebook # and page:
DM06-35, p52
DM07-40, p65
First made on date:
Jan 15, 2010
Made by:
Dan J. MacDonald
Experimental Data:
A solution of 4,2`-pyrimidyl-N,N,N`-tris(trimethylsilyl)amidine (1.1072 g, 3.2988 mmol)
in 10 mL of acetonitrile was added to a solution of SeCl 2 (generated in situ from SeCl 4
(0.6588 g, 2.984 mmol) and Se powder (0.2473 g, 3.132 mmol)) in 20 mL of acetonitrile
and heated gently for 1 h. The resulting orange powder was filtered and washed with 3 ×
5 mL portions of acetonitrile and dried in vacuo to afford the title compound used
without further purification, yield: 0.7026 g (69% based on amidine).
FTIR (KBr): 3123(w), 3056(w), 3029(w), 3018(w), 2974(w), 2958(w), 1695(w),
1561(s), 1428(m), 1373(m), 1358(m), 1262(w), 1188(m), 1177(m), 1100(w), 992(w),
845(w), 823(w), 781(m), 745(m), 714(w), 680(mw), 661(w), 648(w), 631(m), 596(w),
449(w), 411(w).
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