PUMA publications for /user/b_schwederski/acetonitrile%20valence;uv%20complex;crystal%20visiblehttps://puma.ub.uni-stuttgart.de/user/b_schwederski/acetonitrile%20valence;uv%20complex;crystal%20visiblePUMA RSS feed for /user/b_schwederski/acetonitrile%20valence;uv%20complex;crystal%20visible2024-03-29T10:50:40+01:00Synthesis, Structure, and Electronic Properties of RuN6 Dinuclear Ru-Hbpp Complexeshttps://puma.ub.uni-stuttgart.de/bibtex/2b4d14a3873de5809a3b3736b1c01772b/b_schwederskib_schwederski2019-07-15T13:41:23+02:00acetonitrile atropisomerization complex complex;crystal complex;electronic complex;prepn deriv dinuclear mixed oxidn;cyclic pyridylpyrazole ruthenium spectra structure terpyridine valence;UV visible voltammetry <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Stephan Roeser" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/0"><span itemprop="name">S. Roeser</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Mehmed Z. Ertem" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/1"><span itemprop="name">M. Ertem</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Clyde Cady" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/2"><span itemprop="name">C. Cady</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Rainer Lomoth" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/3"><span itemprop="name">R. Lomoth</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Jordi Benet-Buchholz" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/4"><span itemprop="name">J. Benet-Buchholz</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Leif Hammarstrom" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/5"><span itemprop="name">L. Hammarstrom</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Biprajit Sarkar" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/6"><span itemprop="name">B. Sarkar</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfgang Kaim" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/7"><span itemprop="name">W. Kaim</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Christopher J. Cramer" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/8"><span itemprop="name">C. Cramer</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Antoni. Llobet" itemprop="url" href="/person/17f2d46b7e22b8674f6c788a2413a8783/author/9"><span itemprop="name">A. Llobet</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">51 </span></span>(<span itemprop="issueNumber">1</span>):
<span itemprop="pagination">320--327</span></em> </span>(<em><span>2012<meta content="2012" itemprop="datePublished"/></span></em>)</span>Mon Jul 15 13:41:23 CEST 2019Inorganic Chemistry1320--327Synthesis, Structure, and Electronic Properties of RuN6 Dinuclear Ru-Hbpp Complexes512012acetonitrile atropisomerization complex complex;crystal complex;electronic complex;prepn deriv dinuclear mixed oxidn;cyclic pyridylpyrazole ruthenium spectra structure terpyridine valence;UV visible voltammetry A series of RuN6 dinuclear Ru R1-Hbpp R2-trpy deriv. complexes (R1-Hbpp = 4-substituted 3,5-bis(2-pyridyl)pyrazole; R2-trpy = 4'-substituted terpyridine) of general formula {[RuII(R2-trpy)(MeCN)]2(μ-R1-bpp)}3+, (compds. 103+-143+; R1 = H, Me, or NO2, and R2 = H, Me, MeO) has been prepd. from their Cl- or AcO- bridged precursors. The complexes have been characterized by UV-visible, NMR, CV, and some by x-ray. Complexes 103+-143+, RuII-RuII, were oxidized by 1 equiv in soln., leading to the mixed valence RuII-RuIII complexes 104+-144+ contg. one unpaired electron and were characterized by EPR and UV-visible-near-IR, which showed metal-centered spin and the presence of low-energy IVCT bands. The Hab parameter indicates a relatively strong electronic coupling between the two ruthenium centers (class II). Further two electron oxidn. in soln. of the 103+-143+ gave EPR silent RuIII-RuIII complexes 105+-145+, that were further characterized by UV-visible-NIR. TD-DFT calcns. were employed to assign the nature of the UV-visible transitions for the complexes in the various oxidn. states, which are of metal to ligand charge transfer (MLCT) type for RuII-RuII and ligand to metal charge transfer (LMCT) type for RuIII-RuII and RuIII-RuIII. [on SciFinder(R)]