38577-45-6Relevant academic research and scientific papers
Synthesis, crystal structure, and magnetic properties of a nitronyl nitroxide biradical-coordinated copper(II) complex
Gao, Yan-Li,Gao, Pingqiang,Gong, Ying,Ren, Guoyu
, p. 590 - 595 (2021)
A coordination compound constructed from a nitronyl nitroxide biradical NITPh(3-NIT) and CuII(hfac)2(H2O)2 building blocks [NITPh(3-NIT) = 1,3-bis(1′-oxyl-3′-oxido-4′,4′, 5′, 5′-tetramethyl-4,5-dihydro-1H-imidazol-2-y1)-benzene, hfac = hexafluoroacetylacetonato] is successfully synthesized. The crystal structure is determined by X-ray single-crystal diffraction. The asymmetric complex {[(NITPh(3-NIT)]Cu(hfac)2} consists of one Cu(II) ion and two >N–O? groups and adopts a distorted triangular bipyramid with a penta-coordinated central copper(II) atom and three hfac oxygen atoms at the base and a >N–O? oxygen atom and one hfac oxygen atom at the apices. Intramolecular O..O bonding and π–π stacking interactions are observed between molecules. A magnetic susceptibility study of the coordination compound shows antiferromagnetic interactions between Cu(II) ions and >N–O? groups and very weak ferromagnetic interactions between Cu(II) ions and the free >N–O? group through O..O bonding between the nitroxide group oxygen atom and the oxygen atom of hfac.
Radical metalloids with N-heterocyclic carbene and phenanthroline ligands: Synthesis, properties, and cross-coupling reaction of [(nitronyl nitroxide)-2-ido]metal complexes with aryl halides
Yamada, Kiyomi,Zhang, Xun,Tanimoto, Ryu,Suzuki, Shuichi,Kozaki, Masatoshi,Tanaka, Rika,Okada, Keiji
, p. 1150 - 1157 (2018/07/29)
New radical metalloids, NN-AuSIMes and NNCu( bdmpphen), were prepared and their properties were investigated. They were applied to Pd(0)-mediated crosscoupling reactions with aryl halides (ArX) to produce 2-aryl (nitronyl nitroxide) s in moderate to high
Nitronyl nitroxide as a coupling partner: Pd-mediated cross-coupling of (nitronyl nitroxide-2-ido)(triphenylphosphine)gold(i) with aryl halides
Tanimoto, Ryu,Suzuki, Shuichi,Kozaki, Masatoshi,Okada, Keiji
, p. 678 - 680 (2014/05/20)
A cross-coupling reaction using nitronyl nitroxide (NN) as a coupling partner was developed: Refluxing a mixture of [AuI(NN-2-ido)(PPh3)] and aryl iodide (ArI) in THF in the presence of 10 mol% [Pd(PPh3)4] produced a cross-coupling product NN-Ar in a high yield. This method allowed the direct introduction of the NN radical onto various poly- and heterocyclic aromatic rings.
Towards a better understanding of the magnetic interactions within m-phenylene α-nitronyl imino nitroxide based biradicals
Catala, Laure,Le Moigne, Jacques,Kyritsakas, Nathalie,Rey, Paul,Novoa, Juan J.,Turek, Philippe
, p. 2466 - 2480 (2007/10/03)
An extensive investigation of the magnetic properties of three series of biradicals (bis-nitronyl nitroxides diNN-R, bis-imino nitroxides diIN-R and mixed INNN-R, where R is either hydrogen, a triple bond or trimethylsilylacetylenic group) has been carrie
CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF A BENZALDEHYDE NITRONYL NITROXIDE RADICAL
Caneshi, Andrea,Gatteschi, Dante,Rentschler, Eva,Sessoli, Roberta
, p. 283 - 286 (2007/10/02)
A new nitronyl nitroxide radical, 2-(3-benzaldehyde)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, hereafter denoted NIT(m-CHO)Ph, has been synthesized.It crystallizes in the space group P21/n, with a = 9.856(2) Angstroem, b = 7.098(2) Angstroem, c = 19.584(4) Angstroem and β = 95.55(2) deg.The magnetic behaviour shown by this compound is an antiferromagnetic intermolecular coupling.The exchange coupling constant between the radical molecules, deduced from the measurement of the susceptibility in the temperature range 10-280 K, has been found to be 68.3 cm-1.
