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Isovalent and mixed-valent diruthenium complexes [(acac)2RuII (-bpytz)RuII(acac)2] and [(acac)2RuII(-bpytz)RuIII(acac)2](ClO4) (acac = acetylacetonate and bpytz = 3,6-bis(3,5-dimethylpyrazolyl)-1,2,4,5-tetrazine): synthesis, spectroelectrochemical, and epr investigation.
Patra S, Sarkar B, Ghumaan S, Fiedler J, Kaim W, Lahiri GK. Patra S, et al. Among authors: ghumaan s. Inorg Chem. 2004 Sep 20;43(19):6108-13. doi: 10.1021/ic049346r. Inorg Chem. 2004. PMID: 15360263
2,5-Dioxido-1,4-benzoquinonediimine (H2L2-), a hydrogen-bonding noninnocent bridging ligand related to aminated topaquinone: different oxidation state distributions in complexes [{(bpy)2Ru}2(mu-H2L)]n (n=0,+,2+,3+,4+) and [{(acac)2Ru}2(mu-H2L)]m (m=2-,-,0,+,2+).
Kar S, Sarkar B, Ghumaan S, Janardanan D, van Slageren J, Fiedler J, Puranik VG, Sunoj RB, Kaim W, Lahiri GK. Kar S, et al. Among authors: ghumaan s. Chemistry. 2005 Aug 19;11(17):4901-11. doi: 10.1002/chem.200500202. Chemistry. 2005. PMID: 15954152
A new coordination mode of the photometric reagent glyoxalbis(2-hydroxyanil) (H2gbha): bis-bidentate bridging by gbha2- in the redox series [(mu-gbha)[Ru(acac)2]2]n (n = -2, -1, 0, +1, +2), including a radical-bridged diruthenium(III) and a Ru(III)/Ru(IV) intermediate.
Kar S, Sarkar B, Ghumaan S, Roy D, Urbanos FA, Fiedler J, Sunoj RB, Jimenez-Aparicio R, Kaim W, Lahiri GK. Kar S, et al. Among authors: ghumaan s. Inorg Chem. 2005 Nov 28;44(24):8715-22. doi: 10.1021/ic050950r. Inorg Chem. 2005. PMID: 16296825
Probing mixed valence in a new tppz-bridged diruthenium(III,II) complex {(mu-tppz)[Ru(bik)Cl]2}3+ (tppz=2,3,5,6-tetrakis(2-pyridyl)pyrazine, bik=2,2'-bis(1-methylimidazolyl)ketone): EPR silence, intervalence absorption, and nu(CO) line broadening.
Koley M, Sarkar B, Ghumaan S, Bulak E, Fiedler J, Kaim W, Lahiri GK. Koley M, et al. Among authors: ghumaan s. Inorg Chem. 2007 Apr 30;46(9):3736-42. doi: 10.1021/ic0700102. Epub 2007 Mar 28. Inorg Chem. 2007. PMID: 17388585
13 results