Dalton Transactions

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Cu(I)-assisted click chemistry strategy for conjugation of non-protected cross-bridged macrocyclic chelators to tumour-targeting peptides

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3945-3948
DOI: 10.1039/C4DT03897E, CommunicationZhengxin Cai, Barbara T. Y. Li, Edward H. Wong, Gary R. Weisman, Carolyn J. Anderson
A novel phosphonate-based cross-bridged macrocyclic chelator was efficiently synthesized, clicked with an octreotate analogue, and evaluated as a 64Cu-labelled PET radiopharmaceutical.
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Understanding the relative binding ability of hydroxyfullerene to divalent and trivalent metals

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4380-4388
DOI: 10.1039/C4DT03376K, PaperJessica Heimann, Lauren Morrow, Robin E. Anderson, Andrew R. Barron
Metal contamination of water is a serious challenge faced by environmental chemists, but there is also economic value in the removal of metals for recycling or extraction.
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The copper(I) metal azolate framework showing unusual coordination mode for the 1,2,4-triazole derivative and photocatalytic activity

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3954-3958
DOI: 10.1039/C4DT03933E, CommunicationBai-Qiao Song, Chao Qin, Yu-Teng Zhang, Xue-Song Wu, Kui-Zhan Shao, Zhong-Min Su
A novel photocatalyst containing a tetranuclear Cu4 cluster constructed by six 1,2,4-triazole units was reported where two of the six 1,2,4-triazole units show unusual bridging "crevice" coordination mode with their 1- and 2-positioned sp2 N-atoms as symmetrically bridging centers.
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New insights into the mechanism of iron-catalyzed cross-coupling reactions

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3959-3962
DOI: 10.1039/C4DT03491K, CommunicationAhmadreza Bekhradnia, Per-Ola Norrby
The computational studies on the mechanism of the iron-catalyzed cross-coupling revealed that the AT pathway requires less energy than the regular OA pathway.
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Concomitant spin-canted antiferromagnetic ordering and proton conduction in homometallic and homoleptic coordination polymers

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3949-3953
DOI: 10.1039/C4DT03575E, CommunicationSoumyabrata Goswami, Soumava Biswas, Sanjit Konar
Two oxonate based 1D zig-zag coordination polymers with FeII and CoII are reported. These complexes are the first oxonate based systems to exhibit spin canted antiferromagnetic ordering at low temperatures and good proton conduction ability at elevated temperatures and under high humidity conditions.
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Gold nanoparticles functionalised with fast water exchanging Gd3+ chelates: linker effects on the relaxivity

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4016-4031
DOI: 10.1039/C4DT03210A, PaperMiguel F. Ferreira, Janaina Goncalves, Bibimaryam Mousavi, Maria I. M. Prata, Sergio P. J. Rodrigues, Daniel Calle, Pilar Lopez-Larrubia, Sebastian Cerdan, Tiago B. Rodrigues, Paula M. Ferreira, Lothar Helm, Jose A. Martins, Carlos F. G. C. Geraldes
Linker length has little effect on the relaxivity of Gd3+ chelates immobilized onto gold nanoparticles.
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Heteroleptic Ir(III) complexes based on 2-(2,4-difluorophenyl)-pyridine and bisthienylethene: structures, luminescence and photochromic properties

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4289-4296
DOI: 10.1039/C4DT03973D, PaperDeng-Ke Cao, Ruo-Hong Wei, Xiao-Xiong Li, Jun-Feng Chen, Michael D. Ward
Bisthienylethenes L1H and L2H, and their Ir(III) complexes have been synthesized. Their crystal structures, luminescences and photochromisms have been studied.
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Designed synthesis of size-tunable Ag2S nanoclusters via distinguishable C-S bond cleavage reaction of alkyl- and aryl-thiolates

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3963-3966
DOI: 10.1039/C4DT04021J, CommunicationHang-Qing Chen, Xin He, Hui Guo, Nan-Yan Fu, Liang Zhao
We report herein the synthesis of two aryl- and alkyl-thiolates silver clusters. The two complexes exhibited biased C-S bond cleavage rates upon removing protective ligands and applied for fabricating silver sulfide nanoclusters with variable sizes.
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Lanthanide single molecule magnets: progress and perspective

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,3923-3929
DOI: 10.1039/C4DT03329A, FrontierPeng Zhang, Li Zhang, Jinkui Tang
The recent developments in lanthanide SMMs highlighted in this frontier article indicate the directions to which further synthetic efforts should be focused.
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Heteroleptic platinum(II) isocyanide complexes: convenient synthetic access, polymorphs, and vapoluminescence

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4223-4237
DOI: 10.1039/C4DT03820G, PaperDaron E. Janzen, Kent R. Mann
Mixed cyanide/isocyanide Pt(II) complexes exhibit vapoluminescence. Mechanistic studies of polymorphs and solvates of these complexes indicate large reversible photoluminescence changes accompany inclusion of stoichiometric amounts of water.
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First principles static and dynamic calculations for the transition metal hydride series MH4L3 (M = Fe, Ru and Os; L = NH3, PH3 and PF3)

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4259-4270
DOI: 10.1039/C4DT02475C, PaperNicolas Sieffert, Thomas Kendrick, Davide Tiana, Carole A. Morrison
A DFT study to elucidate how the identity of the metal and auxiliary ligands influences H2 [rightward arrow] 2H dynamics.
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Synthesis and first use of pyridine-2,6-diylbis(pyrazine-2-ylmethanone) in metal cluster chemistry: a {MnIII3Na2} complex with an ideal trigonal bipyramidal geometry

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4318-4327
DOI: 10.1039/C4DT03666B, PaperDimosthenis P. Giannopoulos, Cody Wilson-Konderka, Kevin J. Gagnon, Simon J. Teat, Albert Escuer, Costa Metallinos, Theocharis C. Stamatatos
A new {Mn3Na2} compound with trigonal bipyramidal topology was obtained from a metal-assisted transformation of the ligand (pz)CO(py)CO(pz).
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Imine (-CH[double bond, length as m-dash]N-) brings selectivity for silver enhanced fluorescence

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4370-4379
DOI: 10.1039/C4DT04022H, PaperMainak Ganguly, Jaya Pal, Chanchal Mondal, Anjali Pal, Tarasankar Pal
Strong silver and gold stimulated fluorescence enhancement of alkaline salicylaldehyde solution have been observed. Ammonia or primary amine quantitatively eliminates gold enhanced fluorescence, keeping silver enhanced fluorescence unaffected.
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Gas sensing and electrochemical properties of tetra and octa 2H-chromen-2-one substituted iron(II) phthalocyanines

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4341-4354
DOI: 10.1039/C4DT03301A, PaperSelcuk Altun, Efe Baturhan Orman, Zafer Odabas, Ahmet Alt[i without dot]ndal, Ali R[i without dot]za Ozkaya
CO2, CO and SO2 sensing and redox properties of differently substituted novel iron(II) phthalocyanines were investigated. The spin coated films of the compounds displayed high sensitivity towards CO and CO2. However, exposure to SO2 had no considerable effect on the sensor current.
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Homodinuclear lanthanide {Ln2} (Ln = Gd, Tb, Dy, Eu) complexes prepared from an o-vanillin based ligand: luminescence and single-molecule magnetism behavior

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4328-4340
DOI: 10.1039/C4DT03429E, PaperPrasenjit Bag, Chandresh Kumar Rastogi, Sourav Biswas, Sri Sivakumar, Valeriu Mereacre, Vadapalli Chandrasekhar
Synthesis, structure, magnetism and photophysical properties of a series of homodinuclear lanthanide complexes are reported.
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Hollow mesoporous NiCo2O4 nanocages as efficient electrocatalysts for oxygen evolution reaction

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4148-4154
DOI: 10.1039/C4DT03803G, PaperXiaoming Lv, Yihua Zhu, Hongliang Jiang, Xiaoling Yang, Yanyan Liu, Yunhe Su, Jianfei Huang, Yifan Yao, Chunzhong Li
The NiCo2O4 nanocage with a hollow cavity, large roughness and high porosity exhibits an excellent and stable activity for the oxygen evolution reaction (OER) catalysis.
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Enzyme and voltage stimuli-responsive controlled release system based on [small beta]-cyclodextrin-capped mesoporous silica nanoparticles

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4355-4361
DOI: 10.1039/C4DT03758H, PaperYu Xiao, Tao Wang, Yu Cao, Xue Wang, Ye Zhang, Yunling Liu, Qisheng Huo
This work demonstrated the development of a novel controlled release system, which is sensitive to enzyme and voltage stimuli, based on mesoporous silica nanoparticles functionalized by a ferrocene moiety with [small beta]-cyclodextrin as the nanovalve.
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Deliberate boxes and accidental wheels

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4200-4206
DOI: 10.1039/C4DT03089C, PaperGurpreet Kaur, Matthew I. J. Polson, Richard M. Hartshorn
Box structures containing four ligands and four metal ions (two of each of two kinds) and labile ligands that point into the box cavity have been prepared - as well as decanickel wheels.
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Architectural control of urea in supramolecular 1D strontium vanadium oxide chains

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4195-4199
DOI: 10.1039/C4DT03691C, PaperBenjamin Schwarz, Carsten Streb
The critical effects of small organic ligands such as urea on the assembly of 1D strontium vanadium oxide chains using the principles of molecular self-assembly are discussed.
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Complexation of Eu(III) with Cucurbit[n]uril, n = 5 and 7: A Thermodynamic and Structural Study

23 February, 2015 - 05:17

Dalton Trans., 2015, 44,4246-4258
DOI: 10.1039/C4DT03623A, PaperNeetika Rawat, Aishwarya Kar, A. Bhattacharyya, Ankita Rao, S. K. Nayak, C. Nayak, S. N. Jha, D. Bhattacharyya, B. S. Tomar
An investigation of Eu(III) CBn complexes in solution using calorimetry, TRFS, EXAFS and DFT calculations shows the presence of Eu(III) in different binding modes depending on the cavity size of CBn and the stoichiometry of the complex.
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