Dalton Transactions

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Encapsulation and Stabilization of Polyoxometalates in Self-Assembled Supramolecular Hydrogels

7 August, 2014 - 02:17
Dalton Trans., 2014, Accepted Manuscript
DOI: 10.1039/C4DT01372G, CommunicationVamangi M Pandya, Ulrich Kortz, Sachin Arun Joshi
We have encapsulated the polyoxoanions [P2W18O62]6- and [P2W15V3O62]9- in a self-assembled carboxy-methyl-chitosan (CMC) hydrogel, exhibiting a regular super-structure in water at physiological pH. We performed stability studies as a function...
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Excited state evolution towards ligand loss and ligand chelation at group 6 metal carbonyl centres

7 August, 2014 - 02:17

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT01544D, PaperJennifer 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

7 August, 2014 - 02:17

Dalton Trans., 2014, Advance Article
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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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

7 August, 2014 - 02:17

Dalton Trans., 2014, Advance Article
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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Mixed-ligand ruthenium polypyridyl complexes as apoptosis inducers in cancer cells, the cellular translocation and the important role of ROS-mediated signaling

7 August, 2014 - 02:17

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT01392A, PaperZhennan Zhao, Zuandi Luo, Qiong Wu, Wenjie Zheng, Yanxian Feng, Tianfeng Chen
Ruthenium complexes enter cancer cells through TfR-mediated endocytosis and translocate to the mitochondria, where they activate ROS-mediated apoptosis.
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Large structural changes upon protonation of Fe4S4 clusters: the consequences for reactivity

5 August, 2014 - 01:54

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT01687D, PaperIan Dance, Richard A. Henderson
Recognition that protonation of [small mu ]3-S in [Fe4S4X4]2- clusters causes breaking of an S-Fe bond provides a kinetically consistent general mechanism for the acid-catalysed substitution reactions of [Fe4S4X4]2- clusters.
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Low temperature activation of S8, Sered and [small alpha]-Te with [CpBIGFe(CO)2] radicals

5 August, 2014 - 01:54

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT01764A, CommunicationS. Heinl, M. Scheer
The bulky dimeric iron complex, [CpBIGFe(CO)2]2, readily activates elemental chalcogens (S8, Sered and [small alpha]-Te) under mild conditions at room temperature.
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Synthesis, characterization, and in vitro evaluation of new coordination complexes of platinum(II) and rhenium(I) with a ligand targeting the translocator protein (TSPO)

5 August, 2014 - 01:54

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT01540A, PaperNicola Margiotta, Nunzio Denora, Sara Piccinonna, Valentino Laquintana, Francesco Massimo Lasorsa, Massimo Franco, Giovanni Natile
The 18 kDa translocator protein (TSPO) is overexpressed in many cancers and is also abundant in activated microglial cells occurring in neurodegenerative diseases.
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Femtosecond spectroscopy of the dithiolate Cu(II) and Ni(II) complexes

5 August, 2014 - 01:54

Dalton Trans., 2014, Advance Article
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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Mechanism of water oxidation by non-heme iron catalysts when driven with sodium periodate

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12501-12513
DOI: 10.1039/C4DT01188K, PaperAlexander R. Parent, Takashi Nakazono, Shu Lin, Satoshi Utsunomiya, Ken Sakai
Non-heme iron complexes were determined to serve as homogeneous water oxidation catalysts when driven with sodium periodate. Both mononuclear and dinuclear complexes were found to be active for water oxidation, with the monomeric species exhibiting higher rates.
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Conformational control of the self-assembly of triple helicates and [2 [times] 2]-grids from zinc(II) and 3,6-di(2-pyridyl)pyridazine based ligands

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12606-12613
DOI: 10.1039/C4DT01416B, PaperSamantha E. Bodman, Christopher M. Fitchett
Increasing steric hindrance to the pyridazine rings of 3,6-di(2-pyridyl)pyridazine leads to the self-assembly of [2 [times] 2]-grids with hydrogen bonding clips in place of triple helicates, these represent new supramolecular motifs for this series of ligands with zinc.
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Alternating stereoselective self-assembly of SSSS/RRRR or RSSR isomers of tetrakisphosphines in the row of 14-, 16-, 18- and 20-membered macrocycles

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12784-12789
DOI: 10.1039/C4DT01619J, PaperRoman N. Naumov, Elvira I. Musina, Kirill B. Kanunnikov, Tatiana I. Fesenko, Dmitry B. Krivolapov, Igor A. Litvinov, Peter Lonnecke, Evamarie Hey-Hawkins, Andrey A. Karasik, Oleg G. Sinyashin
Covalent self-assembly of novel 18- and 20-membered P,N-corands as single stereoisomer is described.
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PbP7 - a polyphosphide with a three-dimensional [P7]2- network of condensed and P-bridged P6 hexagons

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12706-12710
DOI: 10.1039/C4DT01539H, PaperKonrad Schafer, Christopher Benndorf, Hellmut Eckert, Rainer Pottgen
The first lead polyphosphide PbP7 was synthesized from the elements in a lead flux through a low-temperature route.
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Ruthenium(II) complexes containing functionalised [small beta]-diketonate ligands: developing a ferrocene mimic for biosensing applications

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12734-12742
DOI: 10.1039/C4DT01459F, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Yeng Ying Lee, D. Barney Walker, J. Justin Gooding, Barbara A. Messerle
A novel ruthenium(II) complex with electrochemical behaviour very similar to that of ferrocene was identified by variation of both the number and electronic demand of the substituted [small beta]-diketonato ligands bound to the metal centre.
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High selectivity towards small copper ions by a preorganized phenanthroline-derived tetradentate ligand and new insight into the complexation mechanism

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12470-12473
DOI: 10.1039/C4DT01489H, CommunicationCheng-Liang Xiao, Qun-Yan Wu, Lei Mei, Li-Yong Yuan, Cong-Zhi Wang, Yu-Liang Zhao, Zhi-Fang Chai, Wei-Qun Shi
A preorganized tetradentate phenanthroline-derived amide ligand was found to show high selectivity towards small copper ions.
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Direct evidence of a blocking heavy atom effect on the water-assisted fluorescence enhancement detection of Hg2+ based on a ratiometric chemosensor

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12633-12638
DOI: 10.1039/C4DT01310G, PaperXin-Long Ni, Yanan Wu, Carl Redshaw, Takehiko Yamato
The heavy atom effect of Hg2+ could be inhibited by water and other solvent molecules based on results using the chemosensor L.
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Synthesis and characterization of mononuclear Zn(II), Co(II) and Ni(II) complexes containing a sterically demanding silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12766-12775
DOI: 10.1039/C4DT01079E, PaperAnna Dolega, Agnieszka Jablonska, Agnieszka Pladzyk, Lukasz Ponikiewski, Wieslawa Ferenc, Jan Sarzynski, Aleksander Herman
Geometries of mononuclear tris(2,6-diisopropylphenoxy)silanethiolate complexes of Ni(II), Co(II) and Zn(II) are stabilized by small co-ligands: ammonia, water or ethanol.
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Structure and water exchange of the hydrated thiosulfate ion in aqueous solution using QMCF MD simulation and large angle X-ray scattering

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12711-12720
DOI: 10.1039/C4DT01010H, PaperLars Eklund, Tomas S. Hofer, Alexander K. H. Weiss, Andreas O. Tirler, Ingmar Persson
Experimental and simulation data of the thiosulfate ion show large similarities in hydration structure and mechanism with the sulfate ion but with weaker hydration of the terminal sulfur atom in thiosulfate.
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The structure and energetics of arsenic(III) oxide intercalated by ionic azides

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12776-12783
DOI: 10.1039/C4DT01569J, PaperPiotr A. Gunka, Karol Kraszewski, Yu-Sheng Chen, Janusz Zachara
Two novel arsenic(III) oxide intercalates with potassium and ammonium azides have been synthesized and their crystal structures have been determined.
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Coligand-directed synthesis of five Co(II)/Ni(II) coordination polymers with a neutral tetradentate ligand: syntheses, crystal structures, and properties

5 August, 2014 - 01:54

Dalton Trans., 2014, 43,12528-12535
DOI: 10.1039/C4DT01535E, PaperLing Qin, Zhong-Jie Wang, Ting Wang, He-Gen Zheng, Jin-Xi Chen
The solvothermal reactions afforded five coordination polymers with different coligands, and the coligand-directed synthesis has a great effect on the final structures.
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