Dalton Transactions

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Study of picosecond processes of an intercalated dipyridophenazine Cr(III) complex bound to defined sequence DNAs using transient absorption and time-resolved infrared methods

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17606-17609
DOI: 10.1039/C4DT01989J, CommunicationStephen J. Devereux, Paraic M. Keane, Suni Vasudevan, Igor V. Sazanovich, Michael Towrie, Qian Cao, Xue-Zhong Sun, Michael W. George, Christine J. Cardin, Noel A. P. Kane-Maguire, John M. Kelly, Susan J. Quinn
Excited-state quenching of DNA intercalated [Cr(phen)2(dppz)]3+ by guanine proceeds by rapid forward and back electron transfer of <3 ps.
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Picosecond time-resolved infrared spectroscopy of rhodium and iridium azides

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17694-17702
DOI: 10.1039/C4DT02097A, PaperPeter Portius, Anthony J. H. M. Meijer, Michael Towrie, Benjamin F. Crozier, Ingrid Schiager
Ultrafast photochemical processes induced in the transition metal azido complexes Rh(Cp*)(N3)2(PPh3) and Ir(Cp*)(N3)2(PPh3) upon laser excitation at 266 nm and 400 nm were elucidated by picosecond time-resolved infrared spectroscopy and density functional theory.
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Femtosecond spectroscopy and TD-DFT calculations of CuCl42- excited states

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17820-17827
DOI: 10.1039/C4DT01409J, PaperElena N. Golubeva, Ekaterina M. Zubanova, Michail Ya. Melnikov, Fedor E. Gostev, Ivan V. Shelaev, Victor A. Nadtochenko
Photoinduced processes of tetrahexylammonium tetrachlorocuprate [(C6H13)4N]2CuIICl4 in chloro-organic solvents were investigated by steady state photolysis and femtosecond transient absorption spectroscopy, as well as TD-DFT calculations of excited terms.
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Spin-orbit effects in square-planar Pt(II) complexes with bidentate and terdentate ligands: theoretical absorption/emission spectroscopy

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17806-17819
DOI: 10.1039/C4DT01822B, PaperChristophe Gourlaouen, Chantal Daniel
Theoretical "spin-free" (in black) and "spin-orbit" (in red) absorption spectra of [Pt(tpy)Cl]+ and electronic densities characterizing the main intense bands MLCT/XLCT at 384 nm, and MLCT/LC at 326 nm and 250 nm (the experimental spectrum is shown in the inset).
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Ultrafast electronic and vibrational relaxations in mixed-ligand dithione-dithiolato Ni, Pd, and Pt complexes

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17666-17676
DOI: 10.1039/C4DT01955E, PaperFranziska Frei, Ariana Rondi, Davide Espa, Maria Laura Mercuri, Luca Pilia, Angela Serpe, Ahmad Odeh, Frank Van Mourik, Majed Chergui, Thomas Feurer, Paola Deplano, Antonin Vlcek, Andrea Cannizzo
Excitation of Pt, Pd, Ni dithione-dithiolates triggers fs solvation-driven charge redistribution and 6 ps ISC.
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Excited state evolution towards ligand loss and ligand chelation at group 6 metal carbonyl centres

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17797-17805
DOI: 10.1039/C4DT01544D, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Jennifer C. Manton, Saeed Amirjalayer, Anthony C. Coleman, Suzanne McMahon, Emma C. Harvey, Gregory M. Greetham, Ian P. Clark, Wybren Jan Buma, Sander Woutersen, Mary T. Pryce, Conor Long
Picosecond time-resolved infrared measurements and quantum chemical calculations provide insight into the photophysics and photochemistry of ([small eta]6-arene)Cr(CO)3 complexes.
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Stretching the phenazine MO in dppz: the effect of phenyl and phenyl-ethynyl groups on the photophysics of Re(I) dppz complexes

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17775-17785
DOI: 10.1039/C4DT01415D, PaperHolly van der Salm, Christopher B. Larsen, James R. W. McLay, Michael G. Fraser, Nigel T. Lucas, Keith C. Gordon
Dppz complexes with extended conjugation show [small pi],[small pi]* and MLCT excited states in solution. Raman spectral features for the short-lived [small pi],[small pi]* state are observed in single-colour transient experiments.
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Sn(IV) Schiff base complexes: triplet photosensitizers for photoredox reactions

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17754-17765
DOI: 10.1039/C4DT01427H, PaperTod A. Grusenmeyer, Albert W. King, Joel T. Mague, Jeffrey J. Rack, Russell H. Schmehl
We present the synthesis and characterization of a series of four fluorescent Sn(IV) Schiff base complexes, which also possess long-lived triplet excited states.
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Light-induced spin-state switching in the mixed crystal series of the 2D coordination network {[Zn1-xFex(bbtr)3](BF4)2}[infinity]: optical spectroscopy and cooperative effects

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17786-17796
DOI: 10.1039/C4DT01728E, PaperPradip Chakraborty, Cristian Enachescu, Arnaud Humair, Leo Egger, Teresa Delgado, Antoine Tissot, Laure Guenee, Celine Besnard, Robert Bronisz, Andreas Hauser
Strong cooperative interactions result in light-induced bistability between the high-spin and the low-spin state.
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Molecular excitons in a copper azadipyrrin complex

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17746-17753
DOI: 10.1039/C4DT01588F, PaperT. M. McLean, S. G. Telfer, A. B. S. Elliott, K. C. Gordon, M. Lein, M. R. Waterland
Exciton coupling is applied for the first time to successfully explain the excited-state structure of metalloazadipyrrins.
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Femtosecond spectroscopy of the dithiolate Cu(II) and Ni(II) complexes

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17766-17774
DOI: 10.1039/C4DT01407C, PaperVictor F. Plyusnin, Ivan P. Pozdnyakov, Vjacheslav P. Grivin, Aleksey I. Solovyev, Helge Lemmetyinen, Nikolai V. Tkachenko, Stanislav V. Larionov
Femtosecond spectroscopy was applied to study the ultrafast dynamics for the excited states of dithiolate Cu(II) and Ni(II) complexes.
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Transient 2D-IR spectroscopy of inorganic excited states

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17578-17589
DOI: 10.1039/C4DT01410C, PerspectiveN. T. Hunt
This Perspective discusses applications of ultrafast transient 2D-IR spectroscopy methods to the study of inorganic excited states.
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Photophysical properties of an unusual bichromophoric species constructed from a cyclometalated Pt(II) chromophore and a blue Bodipy-acetylacetonate species

18 November, 2014 - 02:54

Dalton Trans., 2014, 43,17647-17658
DOI: 10.1039/C4DT01127A, PaperFrancesco Nastasi, Fausto Puntoriero, Scolastica Serroni, Sebastiano Campagna, Jean-Hubert Olivier, Raymond Ziessel
Complex 1 exhibits a formally forbidden energy transfer from the metal-based triplet to the fluorescent Bodipy singlet state.
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The kinetics and mechanism of photo-assisted Ag(I)-catalysed water oxidation with S2O82-

16 November, 2014 - 02:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT02254H, PaperLihong Yu, Jidan Wang, Dan Guo, Wansheng You, Meiying Liu, Lancui Zhang, Can Li
It is reported that visible light ([small lambda] [greater-than-or-equal] 400 nm) can improve Ag(I)-catalyzed water oxidation into O2 with S2O82- remarkably. The photo-assistant results from the absorbance of the AgO+ species at 375 nm, promoting the rate-determining step (AgO+ + H2O [rightward arrow] Ag+ + H2O2). A reasonable mechanism has been proposed.
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Synthesis, crystal structures and two-photon absorption properties of triphenylamine cyanoacetic acid derivative and its organooxotin complexes

16 November, 2014 - 02:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT02251C, PaperXuesong Zhao, Jie Liu, Hui Wang, Yan Zou, Shengli Li, Shengyi Zhang, Hongping Zhou, Jieying Wu, Yupeng Tian
Three novel organooxotin complexes (Z1, Z2 and Z3) exhibit large 2PA cross-section per molecular weight and can be used as potential anti-tumor agents.
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Lone pair-[small pi] interaction-induced generation of non-interpenetrated and photochromic cuboid 3-D naphthalene diimide coordination networks

16 November, 2014 - 02:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT03124E, PaperJian-Jun Liu, Yu-Jian Hong, Ying-Fang Guan, Mei-Jin Lin, Chang-Cang Huang, Wen-Xin Dai
By imposing the lone pair-[small pi] interactions through the addition of lone-pair-bearing molecules, the interpenetration in cuboid 3-D naphthalene diimide coordination networks was prevented and their photochromism was enhanced.
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Syntheses, structures and properties of two new organic-inorganic hybrid materials based on [varepsilon]-Zn Keggin units {[varepsilon]-PMoV8MoVI4O40-x(OH)xZn4}

16 November, 2014 - 02:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT02993C, PaperHao Miao, Gonghao Hu, Jiuyu Guo, Hongxiang Wan, Hua Mei, Yu Zhang, Yan Xu
Two novel hybrids [varepsilon](pyim)2 and [varepsilon]2(pyim)6, based on [varepsilon]-Zn Keggin units, have been synthesized under hydrothermal conditions by controlling pH values.
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Benzene absorption in a protuberant-grid-type zinc(II)-organic framework triggered by the migration of guest water molecules

16 November, 2014 - 02:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT02169J, CommunicationTien-Wen Tseng, Tzuoo-Tsair Luo, Chang-Hsiu Tsai, Chun-Chi Chen, Gene-Hsiang Lee, Chih-Chieh Wang, Kuang-Lieh Lu
Benzene molecules are reported to be easily and regularly absorbed into specific channels in a 2D protuberant-grid-type Zn(II)-organic framework, which consists of racemic interdigitated bilayers.
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Chemistry of group 9 dimetallaborane analogues of octaborane(12)

14 November, 2014 - 01:54

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT03027C, PaperSubrat Kumar Barik, Dipak Kumar Roy, Sundargopal Ghosh
Reaction of octaborane(12) analogue with metal carbonyl compounds yielded condensed metallaborane (A) and boride cluster (B).
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Catalytic oxygenation of sp3 "C-H" bonds with Ir(III) complexes of chelating triazoles and mesoionic carbenes

14 November, 2014 - 01:54

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C4DT02879A, PaperStephan Hohloch, Selina Kaiser, Fenja Leena Duecker, Aljosa Bolje, Ramananda Maity, Janez Kosmrlj, Biprajit Sarkar
Ir(III) complexes with chelating triazole and mesoionic carbene ligands are potent pre-catalysts for the direct oxygenation of C-H bonds.
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