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Syntheses, Structures, and Electronic Properties of a New Series of Tellurides of the Type [Sequestered Cation]2(Tex) (x = 1–4)

ZAAC13

G. Thiele, N. Lichtenberger, R. Tonner, S. Dehnen – 2013

The list of “classical” tellurides with organic cations was expanded by the synthesis of single‐crystalline salts [Li2(en)n](Tex) (en = ethylenediamine) with n = 4, x = 1 (1), n = 4, x = 2 (2), and n = 5, x = 3 (3), [K(18c6)]2(Tex) (18c6 = 1, 4,7, 10, 13, 16‐hexaoxacycloocta‐decane) with x = 2 (4), 4 (5), [K(18c6)]2[K(en)]2(Te2)2 (6), and [K([2.2.2]crypt)]2(Te2) (7) ([2.2.2]crypt = 4, 7,13, 16, 21, 24‐hexaoxa‐1, 10‐diazabicyclo[8.8.8]‐hexacosane). Electronic structure calculations on free molecules and periodic approaches are discussed and compared with experimental UV/Vis spectra, providing a correlation of the bandgaps with the telluride chain length, and a possibility for affecting the gap by according choice of the counterions. Additionally, 125Te NMR chemical shifts of the presented series of en solvated lithium tellurides are presented.

Titel
Syntheses, Structures, and Electronic Properties of a New Series of Tellurides of the Type [Sequestered Cation]2(Tex) (x = 1–4)
Verfasser
G. Thiele, N. Lichtenberger, R. Tonner, S. Dehnen
Datum
2013
Zitierweise
Z. Anorg. Allg. Chem. 2013, 639, 2809-2915.
Art
Text