Sasmal, S and Devarajan, N and Natarajan, S (2024) Synthesis, Structure and Properties of Compounds Derived from Kotoite-related Structures: A2MB2O6 (A=Zn, Ba, Pb; B=Pb, Ba, Zn, Cu). In: Chemistry - An Asian Journal .
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Abstract
A series of compounds with the general formula A2MB2O6 (A=Zn, Ba, Pb; B=Pb, Ba, Zn, Cu) related to the kotoite structure has been prepared employing high-temperature solid state methods. The substitution of transition elements in place of Zn2+ ions resulted in colored compounds. The optical absorption spectra could be explained based on Tanabe-Sugano diagram and allowed d-d transitions. Dielectric studies on Ba2ZnB2O6, (Ba1.5Pb0.5)ZnB2O6, PbZn2B2O6, Pb1.5Zn1.5B2O6, BaZn2B2O6 and Pb2CuB2O6 at room temperature indicate reasonable values at low frequencies, which decrease on increasing frequencies. Magnetic study of synthesized single-phase compounds BaZnCoB2O6 and Pb2CuB2O6 have been performed. The substitution of Eu3+, Tb3+ and Tm3+ in place of Ba2+ in Ba2ZnB2O6, gives rise to the expected emission of red, green and blue colors. Suitable modifications of the different phosphors in Ba2ZnB2O6, resulted in white-light emission in Ba2ZnB2O6. The Pb2CuB2O6 compound was found to be a good catalyst in the ipso-hydroxylation of arylboronic acids. © 2024 Wiley-VCH GmbH.
| Item Type: | Journal Article |
|---|---|
| Publication: | Chemistry - An Asian Journal |
| Publisher: | John Wiley and Sons Ltd |
| Additional Information: | The copyright for this article belongs to the authors. |
| Keywords: | Laser beams; Niobium compounds; Optical emission spectroscopy; Tantalum compounds; Terbium compounds; Thulium compounds; Zinc sulfide, D-d transitions; General formulas; High temperature solid-state method; Kotoite; Optical absorption spectrum; Organic catalysis; Structures and properties; Transition element; White light emission; Zn 2+, Barium compounds |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
| Date Deposited: | 06 Dec 2024 16:58 |
| Last Modified: | 06 Dec 2024 17:00 |
| URI: | http://eprints.iisc.ac.in/id/eprint/87110 |
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