Abstract: Salts of the [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazolidyl radical anion (1) and the early alkali metals, [Li(12-crown-4)(2)][1] (3), [Na(15-crown-5)][1] (4), and [K(18-crown-6)][1] (5) as well as the salt [(Me2N)(3)S][1] (6) can be prepared by reduction of [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazole (2) with PhS- anion followed by XRD and ESR characterization. These salts are thermally stable and soluble in MeCN. Low-temperature crystallization of salt 5 from MeCN or storage of 5 under MeCN for a few days at ambient temperature gives the solvate 5-MeCN (7). The radical anion 1 acts as bridging ligand in salts 4 and 5 and as chelating ligand in salt 7. In salt 3, the radical anion 1 is not coordinated to the cation and can be considered as "naked" anion. In salt 6, one of the two crystallographically independent 1 acts as bridging ligand, whilst the other is not coordinated to the cation. Magnetic susceptibility data obtained for salts 4 and 5 in the temperature range of 2-300 K revealed antiferromagnetic exchange interactions between paramagnetic centers: 4, J = -3.42, aJ = -1.12 cm(-1); 5, J = -1.22 cm(-1).

Cite: Ikorskii V.N. , Irtegova I.G. , Lork E. , Makarov A.Y. , Mews R. , Ovcharenko V.I. , Zibarev A.V.
Early alkali metal (Li, Na, K) and tris(dimethylamino)sulfonium (TAS) salts of [1,2,5]thiadiazolo[3,4-c][1,2,5]thiadiazolidyl radical anion: Rational syntheses, structures and magnetic properties
European Journal of Inorganic Chemistry. 2006. N15. P.3061-3067. DOI: 10.1002/ejic.200600220 WOS Scopus РИНЦ OpenAlex

Dates:

Published print:

Aug 1, 2006

Identifiers:

Web of science:	WOS:000239865200018
Scopus:	2-s2.0-33747508929
Elibrary:	13523744
OpenAlex:	W2104048816

Citing:

DB	Citing
Web of science	34
Scopus	37
OpenAlex	38

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