• Mamakhel, Aref
• Bertelsen, Andreas Dueholm
• Vosegaard, Emilie Skytte
• Parmar, Vijay Singh

Abstract

<p>Organic-inorganic hybrid crystals have diverse functionalities, for example in energy storage and luminescence, due to their versatile structures. The synthesis and structural characterization of a new cobalt-vanadium-containing compound, 2[Co(en)3]3+(V4O13)6-·4H2O (1) is presented. The crystal structure of 1, consisting of [Co(en)3]3+ complexes and chains of corner-sharing (VO4) tetrahedra, was solved by single-crystal X-ray diffraction in the centrosymmetric space group P1. Phase purity of the bulk material was confirmed by infrared spectroscopy, scanning electron microscopy, elemental analysis and powder X-ray diffraction. The volume expansion of 1 was found to be close to 1% in the reported temperature range from 100 to 300 K, with a volume thermal expansion coefficient of 56 (2) × 10-6 K-1. The electronic band gap of 1 is 2.30 (1) eV, and magnetic susceptibility measurements showed that the compound exhibits a weak paramagnetic response down to 1.8 K, probably due to minor CoII impurities (&lt;1%) on the CoIII site.</p>

Topics

• impedance spectroscopy
• compound
• phase
• scanning electron microscopy
• powder X-ray diffraction
• thermal expansion
• cobalt
• susceptibility
• vanadium
• space group
• infrared spectroscopy
• elemental analysis
• luminescence