74429-31-5Relevant academic research and scientific papers
Hetero Face-to-Face Porphyrin Array with Cooperative Effects of Coordination and Host–Guest Complexation
Chiba, Yusuke,Liu, Maning,Tachibana, Yasuhiro,Fujihara, Tetsuaki,Tsuji, Yasushi,Terao, Jun
supporting information, p. 1900 - 1904 (2017/08/10)
We successfully synthesized a hetero face-to-face porphyrin array composed of ZnTPP and RuTPP(DABCO)2 (TPP: 5, 10, 15, 20-tetraphenylporphyrin, DABCO: 1,4-diazabi-cyclo[2.2.2]octane) in 2:1 molar ratio. A cyclic Zn porphyrin dimer (ZnCP) was also used as the host molecule for the Ru porphyrin. In the latter, the Ru-DABCO bonding in RuTPP(DABCO)2 was stabilized by the host-guest complexation. Reaction progress kinetic analysis of the ligand substitution reaction of RuTPP(DABCO)2 and that in ZnCP revealed the stabilization mechanism of the Ru-DABCO bonding. Photoinduced electron transfer (PET) from the Zn porphyrin to the Ru porphyrin was observed in the porphyrin array. The host-guest stabilization of unstable complex for construction of a donor—acceptor–donor structure is expected to be a new method for an artificial photosynthesis.
Origin of the deactivation in styrene aziridination by aryl azides, catalyzed by ruthenium porphyrin complexes. Structural characterization of a Δ2-1,2,3-triazoline RuII(TPP)CO complex
Fantauzzi, Simone,Gallo, Emma,Caselli, Alessandro,Ragaini, Fabio,Macchi, Piero,Casati, Nicola,Cenini, Sergio
, p. 4710 - 4713 (2008/10/09)
The reaction of Ru(TPP)CO (TPP = dianion of tetraphenylporphyrin) with 1-(p-nitrophenyl)-5-methyl-5-phenyl-1,2,3-triazoline yielded a Δ2-1,2,3-triazoline ruthenium(II) porphyrin complex, which is responsible for the catalyst deactivation in the aziridination reaction of α-methylstyrene by p-nitrophenyl azide.
1H-NMR and EPR studies of the electronic structure of low-spin ruthenium(III) isocyanide porphyrin complexes: Unusual (dxz,dyz)4 (dxy)1 configuration
Galardon, Erwan,Le Maux, Paul,Paul, Christine,Poriel, Cyril,Simonneaux, Gérard
, p. 145 - 152 (2007/10/03)
The synthesis and characterization of the perchlorato derivatives of bis(isocyanide)tetrakis(phenyl)porphynatoruthenium(III) [Ru(TPP)(RNC)2]ClO4 (1, R=tBu; 2, R=2,6-xylyl) are reported. The 1H-NMR isotropic shifts at 298 K of the pyrrole protons of the two complexes, varied from -5.44 ppm for 1 to +2.55 ppm for 2 rather than the expected -31 ppm, based on previously studied aryl complexes of low-spin ruthenium porphyrins. The EPR spectrum of 2 in solution is axial, with g⊥=2.07 and gII=1.99 at 4 K, Σg2=12.53. These spectroscopic observations are indicative of a metal-based electron for complex with a (dxz, dyz)4 (dxy)1 ground state at any temperature.
Isocyanide ligation at ruthenium(II) complexes with chelating tertiary amine and porphyrin ligands. Structural and electrochemical studies
Lee, Fu-Wa,Choi, Mei-Yuk,Cheung, Kung-Kai,Che, Chi-Ming
, p. 114 - 125 (2007/10/03)
Reaction of [Ru(Me3tacn)(PMe3)2(O2CCF 3)]PF6 with one equivalent of t-BuNC or 4-cyano-1-isocyano-2,6-diisopropylbenzene (L′) in refluxing 1,2-dichloroethane gave [Ru(Me3tacn)(PMe3)(t-BuNC)(O2CCF 3)]PF6 (1)·PF6 and [Ru(Me3tacn)(PMe3)(L′)(O2CCF 3)]PF6 (3)·PF6, respectively. In the presence of zinc amalgam, reactions of [Ru(Me3tacn)(H2O)2(O2CCF 3)](OTf)2, trans-[Ru(16-TMC)Cl2]Cl and cis-[Ru(2,2,2-tet-Me6)Cl2]PF6 with an excess of t-BuNC in 1,2-dichloroethane, followed by anion metathesis, afforded [Ru(Me3tacn)(t-BuNC)2(O2CCF 3)]PF6 (2)·PF6, trans-[Ru(16-TMC)(t-BuNC)2](ClO4)2 (4)·(ClO4)2 and cis-[Ru(2,2,2-tet-Me6)(t-BuNC)2](PF6) 2 (5)·(PF6)2, respectively. Treatment of [Ru(Por)(CO)(MeOH)] (Por=TPP, 4-MeO-TPP or 4-F-TPP) with an excess of t-BuNC or L′ gave [Ru(TPP)(t-BuNC)2] (6) or [Ru(4-MeO-TPP)(L′)2] (7) and [Ru(4-F-TPP)(L′)2] (8), respectively. 1·PF6-5·(PF6)2 display a quasi-reversible Ru(III/II) couple at potentials ranging from +0.65 to +1.42 V vs. FeCp2+/0. The E1/2(RuIII/II) of 5·(PF6)2 (+1.42 V vs. FeCp2+/0) is notably high compared with that of 4·(ClO4)2 (+0.65 V), reflecting the strong π-back-bonding in the cis-bis(tert-butyl isocyanide)ruthenium(II) complex. Irrespective of the overall charge, the cationic complex 4 and the neutral complexes 6-8 all exhibit a virtually linear RNC-Ru-CNR moiety.
