Dalton Transactions

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Vanadyl calix[6]arene complexes: synthesis, structural studies and ethylene homo-(co-)polymerization capability

6 July, 2015 - 14:17

Dalton Trans., 2015, 44,12292-12303
DOI: 10.1039/C5DT00376H, PaperCarl Redshaw, Mark Walton, Kenji Michiue, Yimin Chao, Alex Walton, Pertti Elo, Victor Sumerin, Chengying Jiang, Mark R. J. Elsegood
Use of various combinations of [VOCl3], LiOt-Bu and p-tert-butylcalix[6]areneH6 affords vanadyl complexes capable of ethylene homo-(co-)polymerization.
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Synthesis of cyclic polyesters: effects of alkoxy side chains in salicylaldiminato tin(II) complexes

6 July, 2015 - 14:17

Dalton Trans., 2015, 44,12357-12364
DOI: 10.1039/C5DT00139K, PaperPhonpimon Wongmahasirikun, Paweenuch Prom-on, Preeyanuch Sangtrirutnugul, Palangpon Kongsaeree, Khamphee Phomphrai
A new salicylaldiminato tin(II) catalyst system having alkoxy side chains has been developed and shown to effectively polymerize L-lactide and [varepsilon]-caprolactone giving cyclic PLA and cyclic PCL, respectively.
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Ethylene polymerization by the thermally unique 1-[2-(bis(4-fluoro phenyl)methyl)-4,6-dimethylphenylimino]-2-aryliminoacenaphthylnickel precursors

6 July, 2015 - 14:17

Dalton Trans., 2015, 44,12282-12291
DOI: 10.1039/C5DT00052A, PaperShizhen Du, Qifeng Xing, Zygmunt Flisak, Erlin Yue, Yang Sun, Wen-Hua Sun
Finely tuned substituents within ligands control the catalytic performance of the corresponding complex precursors, tailoring resulting polyethylenes.
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Carbene insertion into a P-H bond: parent phosphinidene-carbene adducts from PH3 and bis(phosphinidene)mercury complexes

6 July, 2015 - 14:17

Dalton Trans., 2015, Advance Article
DOI: 10.1039/C5DT01741F, PaperMark Bispinghoff, Aaron M. Tondreau, Hansjorg Grutzmacher, Charly A. Faradji, Paul G. Pringle
The insertion of an N-heterocyclic carbene into a P-H bond is the first step in a new synthesis of parent phosphinidene-carbene adducts from PH3. These adducts are used to generate bis(phosphinidene)mercury(II) complexes.
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Fluorescent mixed ligand copper(II) complexes of anthracene-appended Schiff bases: studies on DNA binding, nuclease activity and cytotoxicity

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11997-12010
DOI: 10.1039/C5DT00899A, PaperParamasivam Jaividhya, Mani Ganeshpandian, Rajkumar Dhivya, Mohammad Abdulkadher Akbarsha, Mallayan Palaniandavar
While the phen of [Cu(L1-L5)(phen)(ACN)]2+ partially inserts into DNA base pairs the anthracenyl moiety of L1-L5 interacts with DNA hydrophobically.
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Synthesis of a series of new platinum organometallic complexes derived from bidentate Schiff-base ligands and their catalytic activity in the hydrosilylation and dehydrosilylation of styrene

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11919-11928
DOI: 10.1039/C5DT01407G, PaperM. Belhadj Lachachi, Tayeb Benabdallah, Pedro M. Aguiar, M. Hadj Youcef, Adrian C. Whitwood, Jason M. Lynam
Substituents on Schiff base ligands impact the rate and selectivity for Pt-catalysed dehydro/hydrosilylation reactions.
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Stereoelectronic control of photophysics: red and yellow axial and equatorial anomers of a rhenium-quinoline complex

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11700-11704
DOI: 10.1039/C5DT02136G, CommunicationRachel H. Platel, Michael P. Coogan, James A. Platts
A novel quinoline-substituted pyrimidine ligand forms two different coloured complexes upon reaction with Re(CO)5Br.
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The selectivity of water-based pyrophosphate recognition is tuned by metal substitution in dimetallic receptors

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11877-11886
DOI: 10.1039/C5DT00729A, PaperSimon Svane, Frank Kjeldsen, Vickie McKee, Christine J. McKenzie
Indicator displacement assays show that a digallium complex is selective for pyrophosphate even compared with higher concentrations of other common oxoanions like phosphate, ATP, arsenate, nitrate, perchlorate, sulfate, formate, carbonate and acetate.
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A computational analysis of the apparent nido vs. hypho conflict: are we dealing with six- or eight-vertex open-face diheteroboranes?

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11819-11826
DOI: 10.1039/C5DT01460C, PaperJoao Pedro F. Nunes, Josef Holub, David W. H. Rankin, Derek A. Wann, Drahomir Hnyk
Computational studies have been undertaken to investigate the electronic structures of six hetero-substituted borane cages, concluding that hypho-7,8-[S2B6H9]- is the only true hypho species in this series.
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Mechanism of proton transfer to coordinated thiolates: encapsulation of acid stabilizes precursor intermediate

2 July, 2015 - 13:17

Dalton Trans., 2015, 44,11977-11983
DOI: 10.1039/C5DT01716E, PaperAhmed Alwaaly, William Clegg, Ross W. Harrington, Athinoula L. Petrou, Richard A. Henderson
Hydrogen bonded intermediate in protonation of [Ni(thiolate)(triphos)]+ by 2,6-lutidinium is stabilized by encapsulation of the acid by phenyl groups of triphos.
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A closer look at [varepsilon]-caprolactone polymerization catalyzed by alkyl aluminum complexes: the effect of induction period on overall catalytic activity

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11763-11773
DOI: 10.1039/C5DT01563D, PaperHsi-Ching Tseng, Michael Y. Chiang, Wei-Yi Lu, Yen-Jen Chen, Cheng-Jie Lian, Yu-Hsieh Chen, Hsin-Yi Tsai, Yi-Chun Lai, Hsuan-Ying Chen
Previous studies on the ring-opening polymerization of [varepsilon]-caprolactone using structurally related aluminum complexes as pre-catalysts showed inconsistent trends in the total conversion time.
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The effect of temperature on thermoelectric properties of n-type Bi2Te3 nanowire/graphene layer-by-layer hybrid composites

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11755-11762
DOI: 10.1039/C5DT00897B, PaperHyun Ju, Jooheon Kim
The thermoelectric properties of Bi2Te3 nanowire/graphene composites prepared at different sintering temperatures have been investigated.
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Photophysical tuning of the aggregation-induced emission of a series of para-substituted aryl bis(imino)acenaphthene zinc complexes

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11984-11996
DOI: 10.1039/C5DT01529D, PaperDaniel A. Evans, Lucia Myongwon Lee, Ignacio Vargas-Baca, Alan H. Cowley
Bis(imino)acenaphthene (BIAN) zinc complexes with para-substituted aryl groups have been synthesized and investigated from the standpoint of their photophysical properties.
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Influence of PNIPAm on log Kf of a copolymerized 2,2[prime or minute]-bipyridine: revised bifunctional ligand design for ratiometric metal-ion sensing

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11887-11892
DOI: 10.1039/C5DT01688F, PaperJustin O. Massing, Roy P. Planalp
We evaluate the effects of temperature and hydrophobicity on metal-ion sensing within a temperature-responsive indicator for environmental sensing applications.
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Magnetic studies of mesoporous nanostructured iron oxide materials synthesized by one-step soft-templating

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11943-11953
DOI: 10.1039/C5DT01388G, PaperJing Jin, William A. Hines, Chung-Hao Kuo, David M. Perry, Altug S. Poyraz, Yan Xia, Taha Zaidi, Mu-Ping Nieh, Steven L. Suib
A combined magnetization and 57Fe spin-echo nuclear magnetic resonance (NMR) study has been carried out on mesoporous nanostructured materials consisting of the magnetite (Fe3O4) and maghemite ([gamma]-Fe2O3) phases.
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Dodecanuclear [MnIII6LnIII6] species: synthesis, structures and characterization of magnetic relaxation phenomena

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11696-11699
DOI: 10.1039/C5DT01695A, CommunicationThomais G. Tziotzi, Demetrios I. Tzimopoulos, Tadeusz Lis, Ross Inglis, Constantinos J. Milios
Two dodecametallic heteronuclear manganese-lanthanide [MnIII6LnIII6] (Ln = Gd, Dy) complexes were isolated and characterized by magnetic measurements.
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Ru-Ag and Ru-Au dicarbene complexes from an abnormal carbene ruthenium system

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11686-11689
DOI: 10.1039/C5DT01914A, CommunicationMario J. Bitzer, Alexander Pothig, Christian Jandl, Fritz E. Kuhn, Walter Baratta
The first complexes containing an anionic dicarbene connected to two different d-block elements are reported. The synthetic pathway entails metalation and transmetalation reactions, starting from a cationic abnormal Ru-NHC complex.
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Improved selectivity for Pb(II) by sulfur, selenium and tellurium analogues of 1,8-anthraquinone-18-crown-5: synthesis, spectroscopy, X-ray crystallography and computational studies

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11774-11787
DOI: 10.1039/C5DT01305D, PaperKadarkaraisamy Mariappan, Madhubabu Alaparthi, Mariah Hoffman, Myriam Alcantar Rama, Vinothini Balasubramanian, Danielle M. John, Andrew G. Sykes
Selectivity for toxic Pb(II) ion is improved by changing donor heteroatoms in the host.
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Linear 3d-4f compounds: synthesis, structure, and determination of the d-f magnetic interaction

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11935-11942
DOI: 10.1039/C5DT01382H, PaperJianfeng Wu, Lang Zhao, Peng Zhang, Li Zhang, Mei Guo, Jinkui Tang
A family of [RE2M2L2(BA)6] complexes were synthesized and structurally and magnetically characterized. The complex [Dy2Zn2L2(BA)6] showed field induced single molecular magnet behavior profiting from the isolated anisotropic dysprosium ions.
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Aluminum complexes based on pyridine substituted alcohols: synthesis, structure, and catalytic application in ROP

30 June, 2015 - 12:54

Dalton Trans., 2015, 44,11963-11976
DOI: 10.1039/C5DT01001B, PaperMarina M. Kireenko, Ekaterina A. Kuchuk, Kirill V. Zaitsev, Viktor A. Tafeenko, Yuri F. Oprunenko, Andrei V. Churakov, Elmira Kh. Lermontova, Galina S. Zaitseva, Sergey S. Karlov
2,6-Bis(hydroxyalkyl)pyridines were used in the synthesis of Al complexes. The structure of the ligand determines the complex nature. Compounds were used as initiators of lactone ROP.
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