%0 Journal Article %1 Choudhuri.2013 %A Choudhuri, Mohommad M. R. %A Kaim, Wolfgang %A Sarkar, Biprajit %A Crutchley, Robert J. %D 2013 %J Inorganic Chemistry %K bipyridine bridged complex complex;ESR complex;ligand complex;prepn complex;spectroelectrochem cyclic dicyanamidobenzene dinuclear noninnocence ruthenium terpyridine voltammetry %N 19 %P 11060--11066 %R 10.1021/ic401316g %T Non-Innocence of 1,4-Dicyanamidobenzene Bridging Ligands in Dinuclear Ruthenium Complexes %V 52 %X Four dinuclear complexes, RuII(ttpy)-(bpy)2(m-L)-PF62, where bpy is 2,2'-bipyridine, ttpy is 4-(4-tert-butylphenyl)-2,2':6',2''-terpyridine, and L is 2,5-dimethyl-, 2,5-dichloro-, 2,3,4,5-tetrachloro- and unsubstituted 1,4-dicyanamidebenzene dianion have been synthesized and characterized. EPR spectroscopy of electrogenerated Ru-(ttpy)-(bpy)2(m-L)3+ ions shows largely ligand centered spin and thus the complexes' oxidn. states are best formulated as Ru(II), L.bul.-, Ru(II)3+. Visible-NIR and IR spectra of Ru(ttpy)(bpy)2(m-L)3+,4+ ions were also obtained by spectroelectrochem. methods. For the Ru(ttpy)(bpy)2(m-L)3+ ions, the significant variations in the spectra were rationalized in terms of an increased ruthenium contribution to the singly occupied MO with increasing no. of chloro substituents on the bridging ligand L. on SciFinder(R)

@article{Choudhuri.2013, abstract = {Four dinuclear complexes, [{RuII(ttpy)-(bpy)}2(\textgreek{m}-L)]-[PF6]2, where bpy is 2,2'-bipyridine, ttpy is 4-(4-tert-butylphenyl)-2,2':6',2''-terpyridine, and L is 2,5-dimethyl-, 2,5-dichloro-, 2,3,4,5-tetrachloro- and unsubstituted 1,4-dicyanamidebenzene dianion have been synthesized and characterized. EPR spectroscopy of electrogenerated [{Ru-(ttpy)-(bpy)}2(\textgreek{m}-L)]3+ ions shows largely ligand centered spin and thus the complexes' oxidn. states are best formulated as [Ru(II), L.bul.-, Ru(II)]3+. Visible-NIR and IR spectra of [{Ru(ttpy)(bpy)}2(\textgreek{m}-L)]3+,4+ ions were also obtained by spectroelectrochem. methods. For the [{Ru(ttpy)(bpy)}2(\textgreek{m}-L)]3+ ions, the significant variations in the spectra were rationalized in terms of an increased ruthenium contribution to the singly occupied MO with increasing no. of chloro substituents on the bridging ligand L. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Choudhuri, Mohommad M. R. and Kaim, Wolfgang and Sarkar, Biprajit and Crutchley, Robert J.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2d40ec00ee1d666e5aaac3563f9d8ea00/huebleriac}, doi = {10.1021/ic401316g}, interhash = {cd3575bc62f7e63a46dc8d6773936a06}, intrahash = {d40ec00ee1d666e5aaac3563f9d8ea00}, issn = {0020-1669}, journal = {Inorganic Chemistry}, keywords = {bipyridine bridged complex complex;ESR complex;ligand complex;prepn complex;spectroelectrochem cyclic dicyanamidobenzene dinuclear noninnocence ruthenium terpyridine voltammetry}, number = 19, pages = {11060--11066}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Non-Innocence of 1,4-Dicyanamidobenzene Bridging Ligands in Dinuclear Ruthenium Complexes}, volume = 52, year = 2013 }