Article Per Year (5 Year)
p-Index From 2021 - 2026
0.947
P-Index
This Author published in this journals
All Journal Cakrawala Pendidikan Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Formatif: Jurnal Ilmiah Pendidikan MIPA Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Psychology, Evaluation, and Technology in Educational Research Acta Chimica Asiana
Kristian Handoyo Sugiyarto
Department of Chemistry Education, Universitas Negeri Yogyakarta, Jl. Colombo No. 1, Yogyakarta 55281, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

 1   2 
Synthesis, Characterization, and Magnetic Properties of Iron(II) Complex with 2,6-Bis(pyrazol-3-yl)pyridine Ligand and Tetracyanonickelate Anion Fitriani Fitriani; Irma Mulyani; Djulia Onggo; Kristian Handoyo Sugiyarto; Ashis Bhattacharjee; Hiroki Akutsu; Anas Santria
Indonesian Journal of Chemistry Vol 23, No 4 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.81625

Abstract

The complex containing iron(II), 2,6-bis(pyrazol-3-yl)pyridine (3-bpp) as ligand, and tetracyanonickelate as counter anion has been synthesized and characterized. The characterization data suggest the corresponding formula of [Fe(3-bpp)2][Ni(CN)4]·4H2O. Meanwhile, the SEM–EDX analysis image confirms the existence of all elements contained in the complex except the hydrogen atom. The infrared spectra exhibit vibration bands of the functional groups of 3-bpp ligand and [Ni(CN)4]−1 anion. From magnetic property measurement, the complex's molar magnetic susceptibility (XMT) value is 2.65 emu mol−1 K at 300 K, which contains about 75% high-spin state of the Fe(II) complex. Upon lowering the temperature, the XMT value gradually decreases around 1.37 emu mol−1 K at 13 K. It decreases sharply to about 0.73 emu mol−1 K at 2 K. These values reveal that Fe(II) complex is in the low-spin (LS) state. As a result, the complex exhibited spin-crossover characteristics of gradual transition without thermal hysteresis, and the transition temperature occurred below room temperature with a transition temperature (T1/2) close to 140 K. The spin crossover property of the complex is supported by a thermochromic reversible color change from red-brown at room temperature to dark brown on cooling in liquid nitrogen associated with the high-spin to low-spin transition.
Co-Authors Anas Santria Antuni Wiyarsi Ashis Bhattacharjee Cahyorini Kusumawardani Chaerunnisa Luvitasari Firdausi Djulia Onggo Dwi Anggi Marini Dyah Purwaningsih, Sugi Rahayu Pujianto Febrian Solikhin Fitriani Fitriani Hari Sutrisno Harold Andrew Goodwin Heru Pratomo Al Hiroki Akutsu Irma Mulyani Isana Supiah Yosephine Louise Isti Yunita Jaslin Ikhsan Kristanti Eka Wulandari Naoko Kosaka Nira Listyawati Nur Fitriyana Septiana Indri Hapsari Shinta Setya Wilujeng Yusup Maulana