Magneto-structural correlation of cyano-substituted 3-tert-butyl-1-phenyl-1,2,4-benzotriazin-4-yl: spin transition behaviour observed in a 6-cyano derivative

2018 ◽  
Vol 42 (12) ◽  
pp. 9949-9955 ◽  
Author(s):  
Yusuke Takahashi ◽  
Naoya Tsuchiya ◽  
Youhei Miura ◽  
Naoki Yoshioka
Keyword(s):  
Spin Transition ◽  
Spectroscopic Properties ◽  
Tert Butyl ◽  
Structural Correlation ◽  
Transition Behaviour

New cyano-substituted 3-tert-butylbenzotriazinyls, 7CN and 6CN, were synthesized and their spectroscopic properties and magneto-structural correlation were investigated.

scholarly journals Solvent-induced on/off switching of intramolecular electron transfer in a cyanide-bridged trigonal bipyramidal complex

2016 ◽  
Vol 45 (43) ◽  
pp. 17104-17107 ◽  
Author(s):  
Rong-Jia Wei ◽  
Ryohei Nakahara ◽  
Jamie M. Cameron ◽  
Graham N. Newton ◽  
Takuya Shiga ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Spin Transition ◽  
Intramolecular Electron Transfer ◽  
Thermally Induced ◽  
Trigonal Bipyramidal ◽  
Transition Behaviour

A cyanide-bridged trigonal bipyramidal [Co3Fe2] cluster shows solvent-driven reversible on/off switching of its thermally induced electron-transfer-coupled spin transition behaviour.

Pyridinium N-phenoxide betaines and their application to the determination of solvent polarities, XXIV. Syntheses and UV-vis spectroscopic properties of new lipophilic tert-butyl- and 1-adamantyl substituted, negatively solvatochromic pyridinium N-phenolate betaine dyes

1998 ◽  
Vol 76 (6) ◽  
pp. 686-694 ◽  
Author(s):  
Christian Reichardt ◽  
Stefan Löbbecke ◽  
Abdol Mohammed Mehranpour ◽  
Gerhard Schäfer
Keyword(s):  
Solvent Polarity ◽  
Spectroscopic Properties ◽  
Tert Butyl ◽  
Nonpolar Solvents ◽  
Phenyl Rings

Syntheses and negative solvatochromism of two new lipophilic pentaphenyl pyridinium N-phenolate betaine dyes, substituted with seven tert-butyl groups (9) or with three tert-butyl and two 1-adamantyl groups (13) in the peripheral phenyl rings, are described in order to get zwitterionic dyes that are more soluble in nonpolar solvents such as the standard betaine dye, 1, which has been used for the construction of an empirical scale of solvent polarity, called the ET(30) scale.Key words: betaine dyes, ET(30) values, lipophilic dyes, pyridinium N-phenolate betaine dyes, solvatochromism, solvent polarity.

Intermediate-paramagnetic phases with a half and a quarter spin entities in fluorinated biphenyl-3,5-diyl bis(tert-butyl nitroxides)

2015 ◽  
Vol 3 (30) ◽  
pp. 7813-7818 ◽  
Author(s):  
Takuya Konno ◽  
Hiroki Kudo ◽  
Takayuki Ishida
Keyword(s):  
Single Phase ◽  
Spin Transition ◽  
Triplet Molecule ◽  
Tert Butyl

A ground-triplet molecule 25FBPBN showed spin-transition-like behaviour with a small hysteresis, while 3FBPBN maintained a single phase.

Reactivity and NMR Spectroscopic Properties of Tri(tert-butyl)plumbyl-amine

1997 ◽  
Vol 52 (10) ◽  
pp. 1181-1184 ◽  
Author(s):  
Max Herberhold ◽  
Volker Tröbs ◽  
Hong Zhou ◽  
Bernd Wrackmeyer
Keyword(s):  
Magnetic Resonance ◽  
Spectroscopic Properties ◽  
Two Dimensional ◽  
Pyrazole Derivatives ◽  
Coupling Constant ◽  
Tert Butyl ◽  
Magnetic Resonance Data ◽  
Nmr Data ◽  
Resonance Data

Tri(tert-butyl)plumbyl-amine 1 was prepared and studied by one- (1D) and two-dimensional (2D) 1H, 13C, 15N and 207Pb NMR which allowed determination of the coupling signs 1J(207Pb,13C) (> 0), 2J(207Pb,13C) (> 0), 1J(207Pb,15N) (> 0; reduced coupling constant 1K(207Pb,I5N) < 0) and 2J(207Pb-N-1H) (< 0). Transamination of 1 with aniline and pyrazole afforded the corresponding aniline (2) and pyrazole derivatives (3), respectively. N-Lithiation of 1, followed by treatment with Me3SiCl gave the tri(tert-butyl)plumbyl-trimethylsilyl-amine 5. The multinuclear magnetic resonance data of 2, 3 and 5 are presented. Trimethylplumbylphenyl- amine and trimethylplumbyl-tert-butyl(dimethyl)silyl-amine were prepared and their NMR data were measured for comparison.

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