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Open AccessArticle

Structures and Properties of Dinitrosyl Iron and Cobalt Complexes Ligated by Bis(3,5-diisopropyl-1-pyrazolyl)methane

Department of Chemistry, Ibaraki University, Mito, Ibaraki 310-8512, Japan
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Inorganics 2019, 7(10), 116; https://doi.org/10.3390/inorganics7100116
Received: 9 August 2019 / Revised: 12 September 2019 / Accepted: 12 September 2019 / Published: 20 September 2019
(This article belongs to the Special Issue Scorpionates: Recent Advances)
Two dinitrosyl iron and cobalt complexes [Fe(NO)2(L1”)](BF4) and [Co(NO)2(L1”)](BF4) are synthesized and characterized, supported by a less hindered bidentate nitrogen ligand bis(3,5-diisopropyl-1-pyrazolyl)methane (denoted as L1”), are surprisingly stable under argon atmosphere. X-ray structural analysis shows a distorted tetrahedral geometry. Spectroscopic and structural parameters of the dinitrosyl iron and cobalt complexes are consistent with the previous reported {Fe(NO)2}9 and {Co(NO)2}10. Two N–O and M–N(O) stretching frequencies and their magnetic properties are also consistent with the above electronic structural assignments. We explored the dioxygen reactivities of the obtained dinitrosyl complexes. Moreover, the related [FeCl2(L1”)], [Co(NO3)2(L1”)], and [Co(NO2)2(L1”)] complexes are also characterized in detail. View Full-Text
Keywords: nitric oxide; iron complex; cobalt complex; tetrahedral geometry; infrared spectroscopy nitric oxide; iron complex; cobalt complex; tetrahedral geometry; infrared spectroscopy
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MDPI and ACS Style

Kurihara, H.; Ohta, A.; Fujisawa, K. Structures and Properties of Dinitrosyl Iron and Cobalt Complexes Ligated by Bis(3,5-diisopropyl-1-pyrazolyl)methane. Inorganics 2019, 7, 116.

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