Next Article in Journal
Comparative Toxicological In Vitro and In Ovo Screening of Different Orthodontic Implants Currently Used in Dentistry
Next Article in Special Issue
Multidimensional Ln-Aminophthalate Photoluminescent Coordination Polymers
Previous Article in Journal
Investigation and Improvement of Bond Performance of Synthetic Macro-Fibres in Concrete
Previous Article in Special Issue
Coordination Polymers Based on Highly Emissive Ligands: Synthesis and Functional Properties
Article

Molecular and Polymer Ln2M2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties

1
N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
2
P. N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia
3
Faculty of Fundamental Sciences, Bauman Moscow State Technical University, 105005 Moscow, Russia
4
Academic Department of Innovational Materials and Technologies Chemistry, Plekhanov Russian University of Economics, 117997 Moscow, Russia
*
Author to whom correspondence should be addressed.
Materials 2020, 13(24), 5689; https://doi.org/10.3390/ma13245689
Received: 12 November 2020 / Revised: 7 December 2020 / Accepted: 8 December 2020 / Published: 13 December 2020
Varying the temperature of the reaction of [{Cd(pfb)(H2O)4}+n·n(pfb)], [Ln2(pfb)6(H2O)8]·H2O (Hpfb = pentafluorobenzoic acid), and 1,10-phenanthroline (phen) in MeCN followed by crystallization resulted in the isolation of two type of products: 1D-polymers [LnCd(pfb)5(phen)]n·1.5nMeCN (Ln = Eu (I), Gd (II), Tb (III), Dy (IV)) which were isolated at 25 °C, and molecular compounds [Tb2Cd2(pfb)10(phen)2] (V) formed at 75 °C. The transition from a molecular to a polymer structure becomes possible because of intra- and intermolecular interactions between the aromatic cycles of phen and pfb from neighboring tetranuclear Ln2Cd2 fragments. Replacement of cadmium with zinc in the reaction resulted in molecular compounds Ln2Zn2 [Ln2Zn2(pfb)10(phen)2]·4MeCN (Ln = Eu (VI), Tb (VIII), Dy (IX)) and [Gd2Zn2(pfb)10(H2O)2(phen)2]·4MeCN (VII). A new molecular EuCd complex [Eu2Cd2(pfb)10(phen)4]·4MeCN (X)] was isolated from a mixture of cadmium, zinc, and europium pentafluorobenzoates (Cd:Zn:Ln = 1:1:2). Complexes II-IV, VII and IX exhibit magnetic relaxation at liquid helium temperatures in nonzero magnetic fields. Luminescent studies revealed a bright luminescence of complexes with europium(III) and terbium(III) ions. View Full-Text
Keywords: cadmium-lanthanide(III) complexes; zinc-lanthanide(III) complexes; pentafluorobenzoic acid; coordination polymer; single crystal X-ray; magnetochemistry; photoluminescence cadmium-lanthanide(III) complexes; zinc-lanthanide(III) complexes; pentafluorobenzoic acid; coordination polymer; single crystal X-ray; magnetochemistry; photoluminescence
Show Figures

Graphical abstract

MDPI and ACS Style

Shmelev, M.A.; Kiskin, M.A.; Voronina, J.K.; Babeshkin, K.A.; Efimov, N.N.; Varaksina, E.A.; Korshunov, V.M.; Taydakov, I.V.; Gogoleva, N.V.; Sidorov, A.A.; Eremenko, I.L. Molecular and Polymer Ln2M2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties. Materials 2020, 13, 5689. https://doi.org/10.3390/ma13245689

AMA Style

Shmelev MA, Kiskin MA, Voronina JK, Babeshkin KA, Efimov NN, Varaksina EA, Korshunov VM, Taydakov IV, Gogoleva NV, Sidorov AA, Eremenko IL. Molecular and Polymer Ln2M2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties. Materials. 2020; 13(24):5689. https://doi.org/10.3390/ma13245689

Chicago/Turabian Style

Shmelev, Maxim A., Mikhail A. Kiskin, Julia K. Voronina, Konstantin A. Babeshkin, Nikolay N. Efimov, Evgenia A. Varaksina, Vladislav M. Korshunov, Ilya V. Taydakov, Natalia V. Gogoleva, Alexey A. Sidorov, and Igor L. Eremenko. 2020. "Molecular and Polymer Ln2M2 (Ln = Eu, Gd, Tb, Dy; M = Zn, Cd) Complexes with Pentafluorobenzoate Anions: The Role of Temperature and Stacking Effects in the Structure; Magnetic and Luminescent Properties" Materials 13, no. 24: 5689. https://doi.org/10.3390/ma13245689

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop