PUMA publications for /user/galaktoze/complex;isomerhttps://puma.ub.uni-stuttgart.de/user/galaktoze/complex;isomerPUMA RSS feed for /user/galaktoze/complex;isomer2024-03-29T09:41:07+01:00Effect of positional isomerism on the spectroelectrochemical response of 3,6-bis(2-pyridyl)-diketopyrrolopyrrolate bridged bis(carbonylhydridoruthenium) compoundshttps://puma.ub.uni-stuttgart.de/bibtex/2fc28486b28b9df01f1ec649d546b87bb/galaktozegalaktoze2018-12-07T10:56:03+01:00carbonyl complex complex;isomer crystal diketopyrrolopyrrolate hydrido mol optimized prepn response ruthenium spectroelectrochem structure <span data-person-type="author" class="authorEditorList "><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Arijit Singha Hazari" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/0"><span itemprop="name">A. Hazari</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Prabir Ghosh" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/1"><span itemprop="name">P. Ghosh</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Katharina Beyer" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/2"><span itemprop="name">K. Beyer</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Brigitte Schwederski" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/3"><span itemprop="name">B. Schwederski</span></a></span>, </span><span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Wolfgang Kaim" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/4"><span itemprop="name">W. Kaim</span></a></span>, </span> and <span><span itemtype="http://schema.org/Person" itemscope="itemscope" itemprop="author"><a title="Goutam Kumar. Lahiri" itemprop="url" href="/person/1433c03a4b44b5be5821b0890fde99957/author/5"><span itemprop="name">G. Lahiri</span></a></span></span>. </span><span class="additional-entrytype-information"><span itemtype="http://schema.org/PublicationIssue" itemscope="itemscope" itemprop="isPartOf"><em><span itemprop="journal">Dalton Transactions</span>, </em> <em><span itemtype="http://schema.org/PublicationVolume" itemscope="itemscope" itemprop="isPartOf"><span itemprop="volumeNumber">47 </span></span>(<span itemprop="issueNumber">39</span>):
<span itemprop="pagination">14078--14084</span></em> </span>(<em><span>2018<meta content="2018" itemprop="datePublished"/></span></em>)</span>Fri Dec 07 10:56:03 CET 2018Dalton Transactions3914078--14084Effect of positional isomerism on the spectroelectrochemical response of 3,6-bis(2-pyridyl)-diketopyrrolopyrrolate bridged bis(carbonylhydridoruthenium) compounds472018carbonyl complex complex;isomer crystal diketopyrrolopyrrolate hydrido mol optimized prepn response ruthenium spectroelectrochem structure Reaction of 3,6-bis(2-pyridyl)-diketopyrrolopyrrole (H2-BPDPP) with two equiv. of [Ru(H)(CO)(Cl)(PPh3)3] in EtOH produced two sym. dinuclear isomers, (\textgreek{m}-BPDPP)[Ru(CO)H(PPh3)2]2, green 1 and blue 2, which could be sepd. chromatog. and characterized spectroscopically (1H and 31P NMR, IR, and UV-VIS). Isomeric forms of 1 and 2 were authenticated using their single crystal X-ray structures. In addn. to the essentially planar bis-chelating bridge BPDPP2- and the mutually trans positioned axial PPh3 ligands in both complexes, compd. 1 was established with the CO groups trans to the pyrrolate-N atoms, whereas 2 has the \textgreek{p} acceptors CO and pyridine-N situated trans to each other. While the redn. of 1 and 2 proceeds irreversibly at neg. potentials, the reversible oxidns. at rather low potentials could be monitored by EPR and UV-VIS-NIR absorption measurements. Together with TD-DFT calcns., these results reveal that the primary electron transfers are largely confined to the BPDPP ligand. Despite the bridge centered processes, small differences between the isomers 10/+ and 20/+ were found, affecting e.g. the near IR absorption of the radical cation species. [on SciFinder(R)]