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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
3,6-bis(2'-pyridyl)pyridazine (L) and its deprotonated form (L - H+)- as ligands for {(acac)2Ru(n+)} or {(bpy)2Ru(m+)}: investigation of mixed valency in [{(acac)2Ru}2(mu-L - H+)]0 and [{(bpy)2Ru}2(mu-L - H+)]4+ by spectroelectrochemistry and EPR.
Ghumaan S, Sarkar B, Patra S, Parimal K, van Slageren J, Fiedler J, Kaim W, Lahiri GK. Ghumaan S, et al. Dalton Trans. 2005 Feb 21;(4):706-12. doi: 10.1039/b417530a. Epub 2005 Jan 17. Dalton Trans. 2005. PMID: 15702181
Isomeric ruthenium terpyridine complexes [Ru(trpy)(L)Cl]n+ containing the unsymmetrically bidentate acceptor L=3-amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine. Synthesis, structures, electrochemistry, spectroscopy and DFT calculations.
Patra S, Sarkar B, Ghumaan S, Patil MP, Mobin SM, Sunoj RB, Kaim W, Lahiri GK. Patra S, et al. Among authors: ghumaan s. Dalton Trans. 2005 Apr 7;(7):1188-94. doi: 10.1039/b500152h. Epub 2005 Feb 24. Dalton Trans. 2005. PMID: 15782253
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
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