A new low-temperature route to metal polychalcogenides: solid-state synthesis of potassium titanium sulfide (K4Ti3S14), a novel one-dimensional compound

Abstract

For the first time, as far as we can determine, an infrared (IR)

Syntheses, Structures, and Physical Properties of the New Quaternary Rare-Earth Chalcogenides RbNd2CuS4, RbSm2CuS4, CsLa2CuSe4, CsSm2CuSe4, RbEr2Cu3S5, CsGd2Ag3Se5, CsTb2Ag3Se5, and Rb2Gd4Cu4S9

“…A number of A/¸n/M/Q (A"s-block metal;¸n"f-block element, usually a rare earth; M"d-block element; Q"chalcogen"S, Se, Te) systems have been synthesized, since the development of the reactive #ux method (1,2 (11), A¸nCu S (A"K, Cs; n"La, Ce, Eu) (11}13), A¸nCuQ (A"K, Cs;¸n"Ce, U; Q"S, Se, Te) (4, 13), K CeAg Te (14), KCeCuTe (15), and Rb CeCu Te (16). These compounds crystallize in a variety of structure types that include two-dimensional layered structures and three-dimensional tunnel structures.…”

Synthesis and Crystal Structure of Ba6Cu12Fe13S27

“…There is no S-S bonding in Ba Cu Fe S ; the shortest S-S distance is 354.2 pm, significantly longer than the 200.0 pm, expected for S-S single bonds (16,17). It is therefore reasonable to assign the oxidation state of sulfur as 2-.…”

Dicaesium hexamercury heptasulfide

“…Cs 2 Hg 6 S 7 belongs to space group P4 2 nm and K 2 Hg 6 S 7 belongs to space group P42 1 m. Another related compound is K 2 Zn 6 O 7 , which crystallizes in space group P4 2 nm (Wambach & Hoppe, 1978). However, the ADDSYM algorithm (Le Page, 1988) reactive flux (Sunshine et al, 1987) was prepared by the stoichiometric reaction of Cs (Strem Chemicals, 99.5%) and S in liquid NH 3 at 194 K. The reactants were loaded into a fused-silica tube under an Ar atmosphere in a glove box. The tube was evacuated to 10 -4 Torr, sealed, and then placed in a computer-controlled furnace.…”