Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments

The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science...

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Main Authors: Kristian Handoyo Sugiyarto, Cornelia Budimarwanti, Harold Andrew Goodwin
Language:English
Published: Faculty of Science, Chiang Mai University 2020
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Online Access:https://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=11203
http://cmuir.cmu.ac.th/jspui/handle/6653943832/69921
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spelling th-cmuir.6653943832-699212020-10-08T08:36:17Z Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments Kristian Handoyo Sugiyarto Cornelia Budimarwanti Harold Andrew Goodwin iron(II) nickel(II) spin-state transition triazole-pyridine The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so. Iron(II) complexes of [FeL3][X]2, where L = trzp, 1-mtrzp, and 1,5-dmtrzp, X = NO3 and I, and nickel(II) analogous, have been prepared and characterized in the electronic properties and magnetism. The complexes were found to be yellow to brownish for the dihydrates, [FeL3](X)2.2H2O. An additional complex of [Fe(1,5-dmtrzp)2Cl2] was also isolated and found as an orange powder. The complexes, [Fe(trzp)3](NO3)2, [Fe(1,5-dmtrzp)3](NO3)2 and [Fe(1,5-dmtrzp)3](I)2 are fully paramagnetic at room temperature, the μ300K being about 5.2 BM. These are, however, significantly temperature-dependent associated with thermally spin-state transition in iron(II), singlet1A1g ( l.s) quintet 5T2g (h.s), and the transitions are continuous and incomplete within the range of experimental temperature, down to 90K. The degree of incompleteness varies among them, and the least thermally induced was observed for [Fe(1-mtrzp)3](NO3)2. The bis chlorido-ligand complex of [Fe(1,5-dmtrzp)2Cl2], shows a normal high-spin nature down to ~ 100 K (μ100K ~ 5.4 BM). The particular nickel complexes analogous show a normal paramagnet with μ300K ~ 2.9 - 3.0 BM. The electronic spectrum for these complex reveals an octahedral geometry with ν2/ν1 being 1.58-1.59. The ligand field strength of about 11700-11800 cm-1 is in the range in which the spin-state transition in the corresponding iron(II) complexes can be thermally induced. 2020-10-08T08:36:17Z 2020-10-08T08:36:17Z 2020 Chiang Mai Journal of Science 47,5 (Sep 2020), p.1068-1080 2465-3845 https://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=11203 http://cmuir.cmu.ac.th/jspui/handle/6653943832/69921 Eng Faculty of Science, Chiang Mai University
institution Chiang Mai University
building Chiang Mai University Library
continent Asia
country Thailand
Thailand
content_provider Chiang Mai University Library
collection CMU Intellectual Repository
language English
topic iron(II)
nickel(II)
spin-state
transition
triazole-pyridine
spellingShingle iron(II)
nickel(II)
spin-state
transition
triazole-pyridine
Kristian Handoyo Sugiyarto
Cornelia Budimarwanti
Harold Andrew Goodwin
Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
description The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.
author Kristian Handoyo Sugiyarto
Cornelia Budimarwanti
Harold Andrew Goodwin
author_facet Kristian Handoyo Sugiyarto
Cornelia Budimarwanti
Harold Andrew Goodwin
author_sort Kristian Handoyo Sugiyarto
title Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
title_short Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
title_full Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
title_fullStr Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
title_full_unstemmed Iron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Moments
title_sort iron(ii) complexes containing 1,2,4-triazole-pyridine and the substituted derivatives; electronic properties and magnetic moments
publisher Faculty of Science, Chiang Mai University
publishDate 2020
url https://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=11203
http://cmuir.cmu.ac.th/jspui/handle/6653943832/69921
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