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Photophysical properties of trans-platinum acetylide complexes featuring N-heterocyclic carbene ligands

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17712-17720
DOI: 10.1039/C4DT01520G, PaperRussell W. Winkel, Galyna G. Dubinina, Khalil A. Abboud, Kirk S. Schanze
Platinum acetylide complexes featuring NHC-carbene ligands show enhanced photophysical properties relative to complexes with phosphine ligands.
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Electronic excited states of chromium and vanadium bisarene complexes revisited: interpretation of the absorption spectra on the basis of TD DFT calculations

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17703-17711
DOI: 10.1039/C4DT01481B, PaperSergey Ketkov, Nikolai Isachenkov, Elena Rychagova, Wen-Bih Tzeng
The influence of the ([small eta]6-arene)2M (M = Cr, V, Cr+) composition on parameters of intravalency and Rydberg transitions is explained on the basis of time-dependent DFT.
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Excited state potential energy surfaces and their interactions in FeIV[double bond, length as m-dash]O active sites

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17567-17577
DOI: 10.1039/C4DT01366B, PerspectiveMartin Srnec, Shaun D. Wong, Edward I. Solomon
Excited states and their interactions in low-spin and high-spin non-heme ferryl active sites are probed by low-temperature magnetic circular dichroism spectroscopy providing mechanistic insight into enzymatic functions.
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Quinoline-2-carboimine copper complex immobilized on amine functionalized silica coated magnetite nanoparticles: A novel and magnetically retrievable catalyst for the synthesis of carbamates via C-H activation of formamides

Dalton Transactions - 18 November, 2014 - 02:54
Dalton Trans., 2014, Accepted Manuscript
DOI: 10.1039/C4DT03236E, PaperR. K. Sharma, Sriparna Dutta, Shivani Sharma
In the present study, we report the synthesis of a highly efficient and magnetically retrievable catalytic system (Cu-2QC@Am-SiO2@Fe3O4) through the covalent immobilization of quinoline-2-carboxaldehyde (2QC) on amine functionalized silica coated...
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Coordination polymers of uranium (IV) terephthalates

Dalton Transactions - 18 November, 2014 - 02:54
Dalton Trans., 2014, Accepted Manuscript
DOI: 10.1039/C4DT02343A, PaperClement Falaise, ayalew assen, ionut mihalcea, Christophe Volkringer, adel mesbah, Nicolas Dacheux, Thierry Loiseau
A series of tetravalent uranium terephthalates has been solvothermally synthesized in N,N-dimethylformamide solvent (DMF) at temperature 100-150[degree]C with different water amounts. Composition diagrams have been determined for U4+ metallic cation...
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Multiple relaxation mechanisms in Erbium SIMs

Dalton Transactions - 18 November, 2014 - 02:54
Dalton Trans., 2014, Accepted Manuscript
DOI: 10.1039/C4DT02767A, PaperManuela Ramos Silva, Pablo Martin-Ramos, Joana Teixeira Coutinho, Laura C J Pereira, Victor Lavin-della-Ventura, Inocencio Rafael Martin-Benenzuela, Pedro Silva, Jesus Martin-Gil
The magnetic properties of two similar Er3+ complexes have been investigated. [Er(tpm)3(bipy)] displays thermally activated slow relaxation of the magnetisation under zero direct-current (DC) field. Under an applied HDC field...
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Spectroscopy of inorganic excited states

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17565-17566
DOI: 10.1039/C4DT90185A, EditorialJulia A. Weinstein
Welcome to this Dalton Transactions themed issue on Spectroscopy of Inorganic Excited States.
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Electron transfer dynamics and excited state branching in a charge-transfer platinum(II) donor-bridge-acceptor assembly

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17677-17693
DOI: 10.1039/C4DT01682C, PaperPaul A. Scattergood, Milan Delor, Igor V. Sazanovich, Oleg V. Bouganov, Sergei A. Tikhomirov, Alexander S. Stasheuski, Anthony W. Parker, Gregory M. Greetham, Michael Towrie, E. Stephen Davies, Anthony J. H. M. Meijer, Julia A. Weinstein
Charge-transfer excited state branches over 3 pathways on the timescale up to 14 ps.
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Spectroelectrochemical identification of charge-transfer excited states in transition metal-based polypyridyl complexes

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17635-17646
DOI: 10.1039/C4DT02849J, PaperAllison M. Brown, Catherine E. McCusker, James K. McCusker
In this report, we demonstrate how spectroelectrochemistry can be used to help characterize dynamics associated with charge-transfer excited states of transition metal-based chromophores as measured by ultrafast electronic absorption spectroscopy.
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The effect of thermal motion on the electron localization in metal-to-ligand charge transfer excitations in [Fe(bpy)3]2+

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17838-17846
DOI: 10.1039/C4DT02294G, PaperAlex Domingo, Carmen Sousa, Coen de Graaf
Accurate electronic structure calculations of the lowest excited states have been performed on twenty snapshots of a molecular dynamics simulation of [Fe(bpy)3]2+ dissolved in water.
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Spectroscopic effects resulting from interacting singlet and triplet excited states: vibronic structure involving the O-H stretching mode in d-d absorption bands of Ni(H2O)62+

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17864-17870
DOI: 10.1039/C4DT01979B, PaperChristopher Dobe, Emmanuel Gonzalez, Philip L. W. Tregenna-Piggott, Christian Reber
Spin-orbit coupling between metal-centered electronic states can lead to absorption spectra with vibronic structure involving ligand-centered vibrational modes, as theoretically analyzed for Ni(H2O)62+.
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Temperature dependent iodide oxidation by MLCT excited states

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17856-17863
DOI: 10.1039/C4DT01683A, PaperAtefeh Taheri, Gerald J. Meyer
Temperature dependent excited state iodide oxidation by two heteroleptic Ru polypyridyl compounds was quantified for the first time.
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Ultrafast spectroscopy and structural characterization of a photochromic isomerizing ruthenium bis-sulfoxide complex

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17847-17855
DOI: 10.1039/C4DT01402B, PaperAlbert W. King, Jason P. Malizia, James T. Engle, Christopher J. Ziegler, Jeffrey J. Rack
Irradiation of [Ru(bpy)2(bpSOp)](PF6)2 (where bpy is 2,2[prime or minute]-bipyridine and bpSOp is 1,3-bis(phenylsulfinyl)propane) results in the formation of two new isomers, namely the S,O- and O,O-bonded species.
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A novel aspect of spectroscopy for porphyrinic compounds under magnetic fields

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17596-17605
DOI: 10.1039/C4DT01428F, PerspectiveYanyan Mulyana, Kazuyuki Ishii
This perspective offers an overview of the recent studies on the Kerr effects, time-resolved electron paramagnetic resonance (TREPR) and magneto-chiral dichroism (MChD) of a range of porphyrinic compounds.
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A strong steric hindrance effect on ground state, excited state, and charge separated state properties of a CuI-diimine complex captured by X-ray transient absorption spectroscopy

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17615-17623
DOI: 10.1039/C4DT02046D, PaperJ. Huang, M. W. Mara, A. B. Stickrath, O. Kokhan, M. R. Harpham, K. Haldrup, M. L. Shelby, X. Zhang, R. Ruppert, J.-P. Sauvage, L. X. Chen
Steady-state and transient structures of a copper diimine dye sensitizer on TiO2 nanoparticles undergoing photoinduced interfacial electron transfer are determined.
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Ultrafast photophysical processes for Fe(III)-carboxylates

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17590-17595
DOI: 10.1039/C4DT01419G, PerspectiveIvan P. Pozdnyakov, Alexey A. Melnikov, Nikolai Tkachenko, Sergey V. Chekalin, Helge Lemmetyinen, Victor F. Plyusnin
Recent works devoted to the investigation of ultrafast processes for several environmentally important Fe(III) carboxylates were observed and discussed.
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Synthesis and photoinduced electron transfer in platinum(II) bis(N-(4-ethynylphenyl)carbazole)bipyridine fullerene complexes

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17624-17634
DOI: 10.1039/C4DT01397B, PaperSai-Ho Lee, Chris Tsz-Leung Chan, Keith Man-Chung Wong, Wai Han Lam, Wai-Ming Kwok, Vivian Wing-Wah Yam
Photoinduced electron transfer reactions in platinum(II) donor-chromophore-acceptor triads were investigated in detail by transient absorption spectroscopy.
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Photophysics and non-linear absorption of Au(I) and Pt(II) acetylide complexes of a thienyl-carbazole chromophore

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17721-17728
DOI: 10.1039/C4DT02123A, PaperSubhadip Goswami, Geoffrey Wicks, Aleksander Rebane, Kirk S. Schanze
Carbazole oligomers with Pt(II)- and Au(I)-acetylide end units exhibit non-linear absorption due to instantaneous two-photon absorption combined with triplet-triplet absorption.
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A little spin on the side: solvent and temperature dependent paramagnetism in [RuII(bpy)2(phendione)]2+

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17729-17739
DOI: 10.1039/C4DT01868K, PaperRobert D. Schmidt, Caleb A. Kent, Javier J. Concepcion, Wenbin Lin, Thomas J. Meyer, Malcolm D. E. Forbes
Magnetometry, 1H-NMR, EPR and substituent effects are used to explain solvent and temperature dependent paramagnetism in [RuII(bpy)2(phendione)](PF6)2.
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Accurate yet feasible computations of resonance Raman spectra for metal complexes in solution: [Ru(bpy)3]2+ as a case study

Dalton Transactions - 18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17610-17614
DOI: 10.1039/C4DT02151G, CommunicationAlberto Baiardi, Camille Latouche, Julien Bloino, Vincenzo Barone
Herein we present a new and promising approach for the high-resolution modeling of vibrational resonance Raman spectra of metal complexes in solution.
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