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Crystals 2019, 9(4), 199; https://doi.org/10.3390/cryst9040199

Sonochemical Synthesis of Cadmium(II) Coordination Polymer Nanospheres as Precursor for Cadmium Oxide Nanoparticles

1
Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
2
Department of Chemistry, Faculty of Science, University of Maragheh, 55181-83111 Maragheh, Iran
3
Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
4
Department of Organic Chemistry, Baku State University, Z. Khalilov str. 23, AZ 1148 Baku, Azerbaijan
5
Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
6
Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow 117198, Russia
*
Authors to whom correspondence should be addressed.
Received: 15 March 2019 / Revised: 1 April 2019 / Accepted: 2 April 2019 / Published: 9 April 2019
(This article belongs to the Section Crystal Engineering)
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Abstract

Nanospheres of a new coordination polymer {[Cd2(µ-HL)(µ-L)(NO3)3(H2O)]·H2O}n (1) were easily prepared by a sonochemical method from cadmium(II) nitrate and HL (HL, pyridine-2-carboxaldehyde isonicotinoyl hydrazone) in ethanol. Single crystals of 1 were also obtained using a branched tube method. The crystal structure of 1 indicates that the µ-HL/µ-L blocks act as linkers between the Cd(II) centers, assembling them into 1D tooth-shaped interdigitated chains, which are further interlinked into a complex 3D H-bonded network with a rare hms (3,5-conn) topology. Nanoparticles of 1 were characterized by elemental analysis, FT-IR spectroscopy, and powder X-ray diffraction (XPRD), while their spherical morphology was confirmed by transmission electron microscopy (TEM). Furthermore, in the presence of a surfactant, the thermolysis of sonochemically generated nanoparticles of 1 led to the formation of cadmium oxide nanospheres (cubic CdO) with an average diameter of 10 nm. This study extends the application of sonochemical synthetic methods for the generation of phase pure nanoparticles of coordination polymers and their thermolysis products. View Full-Text
Keywords: sonochemical synthesis; coordination polymers; metal-organic frameworks; crystal structure; crystal engineering; cadmium; nanoparticles sonochemical synthesis; coordination polymers; metal-organic frameworks; crystal structure; crystal engineering; cadmium; nanoparticles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Afkhami, F.A.; Khandar, A.A.; Mahmoudi, G.; Abdollahi, R.; Gurbanov, A.V.; Kirillov, A.M. Sonochemical Synthesis of Cadmium(II) Coordination Polymer Nanospheres as Precursor for Cadmium Oxide Nanoparticles. Crystals 2019, 9, 199.

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