PUMA publications for /tag/potential;ruthenium%20spectroelectrochemhttps://puma.ub.uni-stuttgart.de/tag/potential;ruthenium%20spectroelectrochemPUMA RSS feed for /tag/potential;ruthenium%20spectroelectrochem2024-03-28T09:36:46+01:00The Redox Series M(bpy)2(Q)n+, M = Ru or Os, Q = 3,5-Di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a Complete X and W Band EPR Study of the Semiquinone States (n = 1)https://puma.ub.uni-stuttgart.de/bibtex/25fc0d5ed98f13e18f2a58e906ea1c77c/huebleriachuebleriac2022-06-15T11:26:56+02:00EPR benzoquinonemonoimine osmium potential potential;ruthenium prepn redox spectroelectrochem <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Shengfa Ye" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/0"><span itemprop="name">S. Ye</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Biprajit Sarkar" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/1"><span itemprop="name">B. Sarkar</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Carole Duboc" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/2"><span itemprop="name">C. Duboc</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jan Fiedler" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/3"><span itemprop="name">J. Fiedler</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfgang. Kaim" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/4"><span itemprop="name">W. Kaim</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Inorganic Chemistry</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">44 </span></span>(<span itemprop="issueNumber">8</span>):
<span itemprop="pagination">2843--2847</span></em> </span>(<em><span>2005<meta content="2005" itemprop="datePublished"/></span></em>)</span>Wed Jun 15 11:26:56 CEST 2022Inorganic Chemistry82843--2847The Redox Series [M(bpy)2(Q)]n+, M = Ru or Os, Q = 3,5-Di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a Complete X and W Band EPR Study of the Semiquinone States (n = 1)442005EPR benzoquinonemonoimine osmium potential potential;ruthenium prepn redox spectroelectrochem [M(bpy)2(Q)](PF6) (bpy = 2,2'-bipyridyl; M = Ru, Os; Q = 3,5-di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine) were isolated and studied by X and W band EPR in a CH2Cl2 soln. at ambient temps. and at 4 K. For M = Ru, the 14N hyperfine splitting confirms the RuII/semiquinone formulation, although at a {\textgreater} 1 mT, the 99,101Ru satellite coupling is unusually high. W band EPR allowed the authors to det. the relatively small g anisotropy \textgreek{D}g = g1 - g3 = 0.0665 for the Ru complex. The Os analog exhibits a much higher difference \textgreek{D}g = 0.370, which is attributed not only to the larger spin-orbit coupling const. of Os vs. that of Ru but also to a higher extent of metal contribution to the singly occupied MO. The difference \textgreek{D}E between the oxidn. and redn. potentials of the radical complexes is larger for the Ru compd. (\textgreek{D}E = 0.87 V) than for the Os analog (\textgreek{D}E = 0.72), confirming the difference in metal/ligand interaction. The electrochem. generated states [M(bpy)2(Q)]n+, n = 0, 1, 2, and 3, were also characterized using UV-visible-near-IR spectroelectrochem. [on SciFinder(R)]The Redox Series M(bpy)2(Q)n+, M = Ru or Os, Q = 3,5-Di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a Complete X and W Band EPR Study of the Semiquinone States (n = 1)https://puma.ub.uni-stuttgart.de/bibtex/25fc0d5ed98f13e18f2a58e906ea1c77c/b_schwederskib_schwederski2019-07-15T13:41:23+02:00EPR benzoquinonemonoimine osmium potential potential;ruthenium prepn redox spectroelectrochem <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Shengfa Ye" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/0"><span itemprop="name">S. Ye</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Biprajit Sarkar" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/1"><span itemprop="name">B. Sarkar</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Carole Duboc" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/2"><span itemprop="name">C. Duboc</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jan Fiedler" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/3"><span itemprop="name">J. Fiedler</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfgang. Kaim" itemprop="url" href="/person/18bb616c087529a8c7a4a8523fed3f674/author/4"><span itemprop="name">W. Kaim</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Inorganic Chemistry</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">44 </span></span>(<span itemprop="issueNumber">8</span>):
<span itemprop="pagination">2843--2847</span></em> </span>(<em><span>2005<meta content="2005" itemprop="datePublished"/></span></em>)</span>Mon Jul 15 13:41:23 CEST 2019Inorganic Chemistry82843--2847The Redox Series [M(bpy)2(Q)]n+, M = Ru or Os, Q = 3,5-Di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a Complete X and W Band EPR Study of the Semiquinone States (n = 1)442005EPR benzoquinonemonoimine osmium potential potential;ruthenium prepn redox spectroelectrochem [M(bpy)2(Q)](PF6) (bpy = 2,2'-bipyridyl; M = Ru, Os; Q = 3,5-di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine) were isolated and studied by X and W band EPR in a CH2Cl2 soln. at ambient temps. and at 4 K. For M = Ru, the 14N hyperfine splitting confirms the RuII/semiquinone formulation, although at a {\textgreater} 1 mT, the 99,101Ru satellite coupling is unusually high. W band EPR allowed the authors to det. the relatively small g anisotropy \textgreek{D}g = g1 - g3 = 0.0665 for the Ru complex. The Os analog exhibits a much higher difference \textgreek{D}g = 0.370, which is attributed not only to the larger spin-orbit coupling const. of Os vs. that of Ru but also to a higher extent of metal contribution to the singly occupied MO. The difference \textgreek{D}E between the oxidn. and redn. potentials of the radical complexes is larger for the Ru compd. (\textgreek{D}E = 0.87 V) than for the Os analog (\textgreek{D}E = 0.72), confirming the difference in metal/ligand interaction. The electrochem. generated states [M(bpy)2(Q)]n+, n = 0, 1, 2, and 3, were also characterized using UV-visible-near-IR spectroelectrochem. [on SciFinder(R)]