Redox state switching of transition metals by deprotonation of the tridentate ligand 2,6-bisimidazol-2-ylpyridineElectronic supplementary information (ESI) available: Fig. S1: ORTEP view of the [Mn(1)2]2+solvated complex. Fig. S2: ORTEP view of the [Mn(1)2]2+non-solvated complex. Fig. S3: ORTEP view of the [Co(1− 2H)2]−complex. See http://www.rsc.org/suppdata/dt/b3/b313440g/

Autor:	Stupka, Gilles, Gremaud, Ludovic, Bernardinelli, Gérald, Williams, Alan F.
Zdroj:	Dalton Transactions; 2004, Vol. 2004 Issue: 3 p407-412, 6p
Abstrakt:	The chemistry of the ligand 1, 2,6-bisimidazol-2-ylpyridine with manganese, cobalt, nickel and ruthenium has been investigated. The ligand binds as a meridional tridentate ligand as shown by the crystal structures of Mn12CF3SO32·Et2O and Ru12PF62·2CH3CN·H2O. The coordinated ligand is deprotonated in mildly basic solution, and this leads to a drop in the metal MiiiMii reduction potential for cobalt and ruthenium of roughly 1.3 V. The crystal structure of Na2PPNCo1− 2H22OH·MeOH·2H2O confirms the deprotonation and shows sodium to bind to the deprotonated nitrogen atoms. No stabilisation of the Miii oxidation state was observed for nickel and manganese.
Databáze:	Supplemental Index
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