Dalton Transactions

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Chiral tetranuclear and dinuclear copper(II) complexes for TEMPO-mediated aerobic oxidation of alcohols: are four metal centres better than two?

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12313-12320
DOI: 10.1039/C4DT01224K, PaperGuoqi Zhang, Gloria Proni, Sherry Zhao, Edwin C. Constable, Catherine E. Housecroft, Markus Neuburger, Jennifer A. Zampese
A tetranuclear CuII complex was revealed to be a better catalyst for aerobic alcohol oxidations than its dinuclear analogue.
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Complexation of trivalent americium and lanthanides with terdentate 'N' donor ligands: the role of rigidity in the ligand structure

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12422-12429
DOI: 10.1039/C4DT01342E, PaperArunasis Bhattacharyya, Trilochan Gadly, Priyanath Pathak, Sunil K. Ghosh, Manoj Mohapatra, Tapan K. Ghanty, Prasanta K. Mohapatra
Americium and lanthanide complexation with Me2TBipy and Me2TPhen is studied by UV-Vis spectrophotometry, time resolved luminescence spectroscopy, single crystal XRD and DFT calculations.
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One-pot controlled synthesis of sea-urchin shaped Bi2S3/CdS hierarchical heterostructures with excellent visible light photocatalytic activity

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12396-12404
DOI: 10.1039/C4DT01176G, PaperYunhan Shi, Yajie Chen, Guohui Tian, Honggang Fu, Kai Pan, Juan Zhou, Haijing Yan
Sea-urchin shaped Bi2S3/CdS hierarchical heterostructures were synthesized via a one-pot solvothermal route, which exhibited enhanced photocatalytic activity.
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Modulating reactivity in iridium bis(N-heterocyclic carbene) complexes: influence of ring size on E-H bond activation chemistry

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12288-12298
DOI: 10.1039/C4DT01398K, PaperNicholas Phillips, Christina Y. Tang, Remi Tirfoin, Michael J. Kelly, Amber L. Thompson, Matthias J. Gutmann, Simon Aldridge
Critical influence of NHC ring size: highly labile [Ir(5-Mes)2(H)2]+ can only be studied by trapping experiments, while [Ir(6-Mes)2(H)2]+ and [Ir(6-Xyl)2(H)2]+ are air/moisture stable.
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Reaction of five-membered zirconacycloallenoids with the strong Lewis acid B(C6F5)3

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12210-12213
DOI: 10.1039/C4DT01137F, PaperGeorg Bender, Constantin G. Daniliuc, Birgit Wibbeling, Gerald Kehr, Gerhard Erker
Two alkyl and aryl substituted five-membered zirconacycloallenoids underwent a typical [sigma]-alkyl metallocene reaction with B(C6F5)3, namely cleavage of the Zr-C(sp3) bond with formation of zwitterionic ([small eta]2-allenyl)zirconium/alkylborate products.
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DFT examination of rare [small alpha]-SiMe3 abstraction in Ta(NMe2)4[N(SiMe3)2]: formation of the imide compound Ta([double bond, length as m-dash]NSiMe3)(NMe2)3 and its trapping to give guanidinate imides

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12390-12395
DOI: 10.1039/C4DT01521E, PaperMichael G. Richmond, Zi-Ling Xue
Ta(NMe2)4[N(SiMe3)2] adopts the square pyramid stereoisomer with an apical N(SiMe3)2 group before rare [small alpha]-SiMe3 abstraction by an amide ligand, yielding the imide Ta([double bond, length as m-dash]NSiMe3)(NMe2)3 and Me3SiNMe2. The imide is then trapped by RN[double bond, length as m-dash]C[double bond, length as m-dash]NR to give guanidinates.
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Carbazole substituted boron dipyrromethenes

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12405-12413
DOI: 10.1039/C4DT01160K, PaperPraseetha E. Kesavan, Iti Gupta
meso-N-Butylcarbazole substituted BODIPYs showed red shifted emission, large Stokes shifts and efficient energy transfer from the meso-carbazole unit to the BODIPY core.
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Synthesis and characterization of new chiral Cu(II)-N4 complexes and their application in the asymmetric aza-Henry reaction

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12357-12364
DOI: 10.1039/C4DT01202J, PaperAnjan Das, Rukhsana I. Kureshy, Nabin Ch. Maity, P. S. Subramanian, Noor-ul H. Khan, Sayed H. R. Abdi, E. Suresh, Hari C. Bajaj
Cu(II) Schiff base complexes Cu(II)-1 and Cu(II)-3 based on 2-acetyl pyridine with both (1R,2R)-1,2-diaminocyclohexane and (1S,2S)-1,2-diaminocyclohexane were synthesized in a single step.
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Hydrothermal synthesis of core-shell structured TbPO4:Ce3+@TbPO4:Gd3+ nanocomposites for magnetic resonance and optical imaging

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12321-12328
DOI: 10.1039/C4DT00249K, PaperXiao-yan Kuang, Huan Liu, Wen-yong Hu, Yuan-zhi Shao
Multi-modal imaging based on multifunctional nanoparticles provides deep, non-invasive and highly sensitive imaging and is a promising alternative approach that can improve the sensitivity of early cancer diagnosis.
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Structural and magnetic properties of some lanthanide (Ln = Eu(III), Gd(III) and Nd(III)) cyanoacetate polymers: field-induced slow magnetic relaxation in the Gd and Nd substitutions

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12342-12356
DOI: 10.1039/C4DT01104J, PaperA. Arauzo, A. Lazarescu, S. Shova, E. Bartolome, R. Cases, J. Luzon, J. Bartolome, C. Turta
The cyanoacetate complexes, {[Ln2(CNCH2COO)6(H2O)4][middle dot]2H2O}n, with Ln = Gd, Nd, show field-induced slow relaxation: resonant phonon trapping and Orbach process for Gd, and Orbach and direct processes for Nd.
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Homoleptic and heteroleptic N-alkylimidazole zinc(II)-containing ionic liquids for high current density electrodeposition

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12329-12341
DOI: 10.1039/C4DT00182F, PaperMarc Steichen, Neil R. Brooks, Luc Van Meervelt, Jan Fransaer, Koen Binnemans
Ionic liquids with a zinc(II) ion as an integral part of the ionic liquid cation are very useful electrolytes for the fast electrodeposition of high-quality zinc metal coatings.
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NAMI-A is highly cytotoxic toward leukaemia cell lines: evidence of inhibition of KCa 3.1 channels

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12150-12155
DOI: 10.1039/C4DT01356E, CommunicationSerena Pillozzi, Luca Gasparoli, Matteo Stefanini, Mirco Ristori, Massimo D'Amico, Enzo Alessio, Federica Scaletti, Andrea Becchetti, Annarosa Arcangeli, Luigi Messori
The anticancer ruthenium(III) complex NAMI-A induces potent and unexpected cytotoxic effects in leukaemia cells causing selective inhibition of KCa 3.1 channels.
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Designing metal hydride complexes for water splitting reactions: a molecular electrostatic potential approach

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12279-12287
DOI: 10.1039/C4DT01343C, PaperK. S. Sandhya, Cherumuttathu H. Suresh
The molecular electrostatic potential minimum of metal-hydrides (Vmin) is used as a sensitive electronic descriptor to tune H2 elimination reactions.
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Directional properties of fluorenylidene moieties in unsymmetrically substituted N-heterocyclic carbenes. Unexpected CH activation of a methylfluorenyl group with palladium. Use in palladium catalysed Suzuki-Miyaura cross coupling of aryl chlorides

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12251-12262
DOI: 10.1039/C4DT01102C, PaperMatthieu Teci, Eric Brenner, Dominique Matt, Christophe Gourlaouen, Loic Toupet
The confining properties of N-heterocyclic carbenes with alkylfluorenyl substituents have been investigated.
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Assembly and photocatalysis of two novel 3D Anderson-type polyoxometalate-based metal-organic frameworks constructed from isomeric bis(pyridylformyl)piperazine ligands

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12272-12278
DOI: 10.1039/C4DT01211A, PaperXiuli Wang, Zhihan Chang, Hongyan Lin, Aixiang Tian, Guocheng Liu, Juwen Zhang
Two 3D Anderson-based MOFs constructed from two isomeric bis(pyridylformyl)piperazine have been synthesized. The isomeric ligands and Anderson-type polyanions play key roles in the construction of the final frameworks.
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Thermodynamics for complex formation between palladium(II) and oxalate

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12243-12250
DOI: 10.1039/C4DT01062K, PaperRadomir Pilny, Premysl Lubal, Lars I. Elding
Overall stability constants and thermodynamic parameters for formation of palladium(II) oxalato complexes have been determined. The chelate effect is discussed.
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Polyaniline shell cross-linked Fe3O4 magnetic nanoparticles for heat activated killing of cancer cells

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12263-12271
DOI: 10.1039/C4DT00898G, PaperSuman Rana, Neena V. Jadhav, K. C. Barick, B. N. Pandey, P. A. Hassan
Enhancement in heat activated killing of cancer cells under an AC magnetic field using polyaniline shell cross-linked Fe3O4 magnetic nanoparticles.
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A comparative study of structural patterns and luminescent properties of silver-DAFO complexes with carborane- versus "classical"-diphosphanes

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12214-12220
DOI: 10.1039/C4DT00797B, PaperOlga Crespo, M. Concepcion Gimeno, Antonio Laguna, Rosie Marriott, Jose M. Saez-Rocher, M. Dolores Villacampa
Silver DAFO complexes with di- or mono-diphosphane auxiliary ligands exhibit emissions that seem to be originated from IL (DAFO) transitions, modified upon coordination.
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Water oxidation catalysts and pH sensors based on azo-conjugated iridium/rhodium motifs

27 July, 2014 - 23:54

Dalton Trans., 2014, 43,12221-12227
DOI: 10.1039/C4DT00491D, PaperWei-Bin Yu, Qing-Ya He, Hua-Tian Shi, Yan Pan, Xianwen Wei
Ionic half-sandwich Ir(III) and Rh(III) fragments coordinated by azo compounds exhibit good electrochemical properties, therefore, they can be employed as catalysts in water oxidation. The color of aqueous solutions of these complexes changes from brown to green at pH 12, so they can be used as pH sensors.
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Sn(IV) Schiff base complexes: triplet photosensitizers for photoredox reactions

27 July, 2014 - 23:54

Dalton Trans., 2014, Advance Article
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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