Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/69921
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dc.contributor.authorKristian Handoyo Sugiyartoen_US
dc.contributor.authorCornelia Budimarwantien_US
dc.contributor.authorHarold Andrew Goodwinen_US
dc.date.accessioned2020-10-08T08:36:17Z-
dc.date.available2020-10-08T08:36:17Z-
dc.date.issued2020en_US
dc.identifier.citationChiang Mai Journal of Science 47,5 (Sep 2020), p.1068-1080en_US
dc.identifier.issn2465-3845en_US
dc.identifier.urihttps://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=11203en_US
dc.identifier.urihttp://cmuir.cmu.ac.th/jspui/handle/6653943832/69921-
dc.descriptionThe 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.en_US
dc.description.abstractIron(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.en_US
dc.language.isoEngen_US
dc.publisherFaculty of Science, Chiang Mai Universityen_US
dc.subjectiron(II)en_US
dc.subjectnickel(II)en_US
dc.subjectspin-stateen_US
dc.subjecttransitionen_US
dc.subjecttriazole-pyridineen_US
dc.titleIron(II) Complexes Containing 1,2,4-Triazole-Pyridine and the Substituted Derivatives; Electronic Properties and Magnetic Momentsen_US
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