Structures and Properties of New Organic Molecule-Based Metals, (D)2BrC2H4SO3 [D = BEDT-TTF and BETS] ..

Authors :: Hiroki Akutsu
Yuta Koyama
Turner, Scott S.
Yasuhiro Nakazawa
Source :: Magnetochemistry; Jul2021, Vol. 7 Issue 7, p1-13, 13p
Publication Year :: 2021
Abstract: An organic anion, 2-bromoethanesulfonate (BrC<subscript>2</subscript>H<subscript>4</subscript>SO<subscript>3</subscript><superscript>−</superscript>), provides one bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) and two bis(ethylenedithio)tetraselenafulvalene (BETS) salts, the compositions of which are β’’-β’’-(BEDT-TTF)<subscript>2</subscript>BrC<subscript>2</subscript>H<subscript>4</subscript>SO<subscript>3</subscript> (1), β’’-β’’-(BETS)<subscript>2</subscript>BrC<subscript>2</subscript>H<subscript>4</subscript>SO<subscript>3</subscript> (2), and θ-(BETS)<subscript>2</subscript>BrC<subscript>2</subscript>H<subscript>4</subscript>SO<subscript>3</subscript> (3), respectively. Compound 1 shows a metal–insulator transition at around 70 K. Compound 2 is isomorphous to 1, and 3 is polymorphic with 2. Compounds 2 and 3 show metallic behavior at least down to 4.2 K. The pressure dependence of the electrical resistivity of 1 is also reported. [ABSTRACT FROM AUTHOR]

Subjects :: MOLECULAR shapes
ELECTRICAL resistivity
ELECTRIC insulators & insulation
ELECTRONIC band structure
ANIONS

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