Syntheses and magnetic properties of substituted bis-indacenyl bi-metallic complexes & application

IF 0.2 Q4 CHEMISTRY, MULTIDISCIPLINARY

Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI:10.15446/rev.colomb.quim.v51n1.101889

Amshumali K. Mungalimane, K.M. Sateesha, K. Mussuvir Pasha, Yuvaraja Dibdalli, Mallikarjun V. Patil, V. Siruguri, R. Reddy

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引用次数: 2

Abstract

Organometallic compounds, Bis (2,4,6,8 teramethyl-indacenyl) di Iron (1), Bis (2,4,6,8 teramethyl s-indacenyl) mono iron, mono cobalt (2), and Bis (2,6 diethyl-4,8-dimethyl-s-indacenyl) di cobalt (3) were synthesised by means of salt elimination strategy, using Fe(II) and Co(II) salts. The compounds were characterised through spectroscopic and electrochemical methods. Magnetic measurements were carried out by Physical Property Measurement System (PPMS). Mossbauer spectroscopic data reveals that in all compounds, surprisingly, Iron is in +3 oxidation state. DFT calculations have been carried out to understand the change in the oxidation state of a metal. DFT study confirms the electron transfer nature of ligand to metal. Cyclic voltametric study on these compounds shows a large separation (ΔE>800mV) between two oxidation peaks confirming the strong interaction between the metal centres. Magnetic measurements on these organometallic compounds reveals that they exhibit a ferrimagnetic behaviour at temperatures below 40 K.

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取代双茚二烯基双金属配合物的合成、磁性及应用

使用Fe（II）和Co（II）盐，通过盐消除策略合成了有机金属化合物，双（2，4，6，8-四甲基-茚三烯基）二铁（1）、双（2、4，6,8-四甲基-s-茚二烯基）单铁、单钴（2）和双（2。6二乙基-4，8-二甲基-s-吲三烯酰基）二钴（3）。通过光谱和电化学方法对化合物进行了表征。通过物理性能测量系统（PPMS）进行磁性测量。穆斯堡尔谱数据显示，令人惊讶的是，在所有化合物中，铁都处于+3氧化态。已经进行DFT计算以了解金属氧化态的变化。DFT研究证实了配体向金属的电子转移性质。对这些化合物的循环伏安法研究表明，两个氧化峰之间有很大的分离（ΔE>800mV），证实了金属中心之间的强烈相互作用。对这些有机金属化合物的磁性测量表明，它们在低于40 K的温度下表现出铁磁性行为。

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来源期刊

Revista Colombiana de Quimica CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： The Revista Colombiana de Química - Colombian Journal of Chemistry (Rev. Colomb. Quim.) Is a peer-reviewed scientific journal of the Department of Chemistry, Faculty of Sciences of the Universidad Nacional de Colombia, Bogotá. It currently publishes three volumes per year: January-April, May-August and September-December. All the content published by the Journal (available online) is under a Creative Commons attribution license type BY 4.0, that allows any person or entity in the world to freely access the content, share it, download it, adapt it or make derivative works without any restriction, provided that it adequately indicates the credit to the authors and to the Colombian Journal of Chemistry.