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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
Un cristal metálico sintético tridimensional compuesto de moléculas de un solo componente
H Tanaka1, Y Okano, H Kobayashi
1Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan.
Resumen
Los investigadores crearon cristales moleculares de un solo componente de [Ni(tmdt) 2] que exhiben propiedades metálicas. Estos nuevos metales sintéticos muestran conductividad desde la temperatura ambiente hasta 0,6 Kelvin.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Física del estado sólido Física del estado sólido
- Química Química es la química.
Sus antecedentes:
- Los metales moleculares generalmente dependen de la transferencia de carga entre componentes químicos distintos.
- El desarrollo de metales moleculares de un solo componente sigue siendo un desafío significativo en la ciencia de los materiales.
Objetivo del estudio:
- Para sintetizar y caracterizar un nuevo metal molecular de un solo componente.
- Para investigar las propiedades electrónicas y las características estructurales de los cristales [Ni(tmdt) 2].
Principales métodos:
- La cristalización de [Ni(tmdt) 2) (trimetileno tetratiafulvaleneditiolato).
- Análisis de la estructura cristalina.
- Las mediciones de resistividad desde la temperatura ambiente hasta 0,6 Kelvin.
- Ab initio cálculos orbitales moleculares.
- Cálculos de la estructura de la banda electrónica de unión estrecha.
Principales resultados:
- Se han preparado con éxito cristales moleculares de un solo componente de [Ni(tmdt) 2).
- Comportamiento metálico observado a través de un amplio rango de temperatura (300 K a 0,6 K).
- Los cálculos indicaron que las orbitales moleculares pi forman bandas de conducción.
- Se identificó un arreglo molecular compacto y una superposición intermolecular significativa que contribuye a la conductividad.
Conclusiones:
- [Ni(tmdt) 2] representa un metal sintético tridimensional. es decir, el Ni es un metal sintético tridimensional.
- La naturaleza metálica del material surge de su disposición molecular única y su estructura electrónica.
- Este trabajo avanza en los principios de diseño para conductores moleculares de un solo componente.
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