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Supramolecular interactions between functional metal complexes and proteins
18 November 2009
Anne-K Duhme-Klair and co-workers illustrate the principles of metal to protein non-covalent binding and highlight recent advances in the field
Ligand and electronic-structure effects in metal-mediated gas-phase activation of methane: A cold approach to a hot problem
18 November 2009
Maria Schlagen and Helmut Shwarz explore the activation of methane by computational methods
Important news for Dalton Transactions' authors and readers
29 October 2009
From 2010, volume numbers will be assigned to Dalton Transactions
Contents list for Dalton Transactions, issue 46, 2009
Front cover
Dalton Trans., 2009, 10125
DOI: 10.1039/b923042b
Contents and Highlights in Chemical Technology
Dalton Trans., 2009, 10127
DOI: 10.1039/b923043m
Perspectives
Supramolecular interactions between functional metal complexes and proteins
Catherine L. Davies, Emma L. Dux and Anne-K. Duhme-Klair,
Dalton Trans., 2009, 10141
DOI: 10.1039/b915776j
The molecular recognition directed binding of transition metal complexes to proteins allows the unique catalytic, spectroscopic and redox properties of metal ions to be combined with the versatility of protein structures. This perspective uses biological and synthetic examples to illustrate the principles of non-covalent binding and highlights recent advances in the field.
Ligand and electronic-structure effects in metal-mediated gas-phase activation of methane: A cold approach to a hot problem
Maria Schlangen and Helmut Schwarz,
Dalton Trans., 2009, 10155
DOI: 10.1039/b915165f
Gas-phase experiments complemented by computational studies provide detailed insight in mechanistic aspects of two important modes of C–H bond activation of methane, i.e. (a) the homolytic bond cleavage to generate methyl radicals and (b) ligand switch processes to form methyl-bound metal ions.
Communications
Spontaneous chiral resolution, nonlinear optical and luminescence of eight-coordinate lanthanide(III) complexes
Hui-Fen Chen, Guo-Cong Guo, Ming-Sheng Wang, Gang Xu, Wen-Qiang Zou, Sheng-Ping Guo, Mei-Feng Wu and Jin-Shun Huang,
Dalton Trans., 2009, 10166
DOI: 10.1039/b917559h
The first eight-coordinated trivalent lanthanide complexes [DyCl3(dicnq)2]n ( 1 and 1
) synthesized by a solvothermal method were found to exhibit spontaneous chiral resolution via incorporation of intrachain 
-stacking interactions and interchain C
N
interactions.
An enantiopure pseudo-C3-symmetric titanium triflate with propeller-like chirality as a catalyst for asymmetric sulfoxidation reactions
Philip Axe, Steven D. Bull, Matthew G. Davidson, Matthew D. Jones, Diane E. J. E. Robinson, William L. Mitchell and John E. Warren,
Dalton Trans., 2009, 10169
DOI: 10.1039/b918141p
A chiral pseudo-C3-symmetric titanium triflate that employs the point chirality of a single stereogenic centre to control the propeller chirality of its aryl rings has been used to catalyse an asymmetric sulfoxidation reaction.
An organometallic approach for the synthesis of water-soluble ruthenium and platinum nanoparticles
Pierre-Jean Debouttière, Victor Martinez, Karine Philippot and Bruno Chaudret,
Dalton Trans., 2009, 10172
DOI: 10.1039/b917749n
The combination between an organometallic approach and the use of a ligand soluble both in organic solvents and water, the 1,3,5-triaza-7-phosphaadamantane, as stabilizer gave rise to very small ruthenium and platinum nanoparticles that are soluble and stable in water.
The first example of photochemical reduction of nitrite into nitrogen monoxide by a dinuclear Ru(II)–Cu(II) complex and photoinduced intramolecular electron transfer reaction between Ru(II) and Cu(II) moieties
Naoko Isoda, Yuki Torii, Tomoko Okada, Makoto Misoo, Hiroshi Yokoyama, Noriaki Ikeda, Masaki Nojiri, Shinnichiro Suzuki and Kazuya Yamaguchi,
Dalton Trans., 2009, 10175
DOI: 10.1039/b907484h
The photochemical reduction of nitrite to NO by the dinuclear Ru(II)–Cu(II) complex was observed in the absence of sacrificial electron donor reagents in CH2Cl2 under irradiation with 460 nm light.
Synthesis and characterization of a monomeric octahedral C2-symmetric titanium complex bearing two 3,3-diphenyl-2,2-biphenol ligands
Carine Diebold, Pierre Mobian, Clarisse Huguenard, Lionel Allouche and Marc Henry,
Dalton Trans., 2009, 10178
DOI: 10.1039/b912694p
The 3,3-diphenyl-2,2-biphenol (dpbpolH2) ligand is shown to react with Ti(OPri)4 in a 2:1 ratio to yield a novel C2-symmetric mononuclear octahedral Ti(IV) bis-biphenolate complex, cis-Ti(dpbpol)2(HOPri)2.
Papers
New types of di-, tetra-, hexa- and octanuclear Ag(I) complexes containing 1,3-adamantanedicarboxylic acid
Jun-Cheng Jin, Yao-Yu Wang, Wei-Hong Zhang, Anatoly S. Lermontov, Elmira Kh. Lermontova and Qi-Zhen Shi,
Dalton Trans., 2009, 10181
DOI: 10.1039/b909309e
The present work demonstrates the promising opportunities of the C2-symmetric ligand 1,3-adamantanedicarboxylic acid and neutral ligands in shaping various silver(I) aggregates. All complexes exhibit luminescent emission bands in the solid state, which broadens the field of their potential applications.
In situ solid state formation of copper(I) coordination polymers by thermal reduction of copper(II) precursor compounds: structure and reactivity of [Cu(NCS)2(pyrimidine)2]n
Mario Wriedt and Christian Näther,
Dalton Trans., 2009, 10192
DOI: 10.1039/b909838k
A new ligand-rich Cu2+ thiocyanato compound was structurally characterized and investigated for its properties. On heating this compound, an in situ reduction takes place, which leads to the formation of a ligand-deficient Cu+ compound. Further investigations on other ligand-rich Cu2+ thiocyanato precursors prove that this reaction works in general.
Heterometallic complexes involving iron(II) and rhenium(VII) centers connected by 
-oxido bridges
Isabel S. Gonçalves, André D. Lopes, Tatiana R. Amarante, Filipe A. Almeida Paz, Nuno J. O. Silva, Martyn Pillinger, Sandra Gago, Fernando Palacio, Fritz E. Kühn and Carlos C. Romão,
Dalton Trans., 2009, 10199
DOI: 10.1039/b913687h
The syntheses, structures and magnetic properties of two new iron-containing compounds with coordinated perrhenate are reported.
The structure of N,N-bis(2-hydroxyethyl)ethane-1,2-diamine and its complexes with Zn(II) and Cd(II)
Alvaro S. de Sousa, Sandra A. Reisinger, Manuel A. Fernandes, Christopher B. Perry, Pradeep R. Varadwaj and Helder M. Marques,
Dalton Trans., 2009, 10208
DOI: 10.1039/b909843g
The complexes of Zn(II) and Cd(II) with BHEEN show that this potentially quadridentate ligand is bidentate towards Zn(II) and tridentate towards Cd(II). DFT calculations reinforce indications from mass spectrometry that the dimeric nature of the Cd(II) complex may be an artefact of the crystallisation process.
First neodymium(III) alkyl-carbene complex based on bis(iminophosphoranyl) ligands
Antoine Buchard, Audrey Auffrant, Louis Ricard, Xavier F. Le Goff, Rachel H. Platel, Charlotte K. Williams and Pascal Le Floch,
Dalton Trans., 2009, 10219
DOI: 10.1039/b918971h
Serendipitous deprotonation of bis(iminophosphoranyl)methanide Nd(III) complexes afforded the first alkyl-carbene neodymium complex. Due to the presence of structurally similar methanide and methandiide fragments, this complex features, as evidenced by X-ray crystallographic analysis, Nd–C single and multiple bonds.
Estimation of the pKa values of water ligands in transition metal complexes using density functional theory with polarized continuum model solvent corrections
Ronan Gilson and Marcus C. Durrant,
Dalton Trans., 2009, 10223
DOI: 10.1039/b911593e
The deprotonation energies of the water ligands in a set of 40 d-block metal complexes have been calculated using DFT with polarized continuum model solvent corrections and correlated with experimental pKa values.
Interconversion between ladder-type octanuclear and linear tetranuclear copper(I) complexes supported by tetraphosphine ligands
Yukie Takemura, Takayuki Nakajima and Tomoaki Tanase,
Dalton Trans., 2009, 10231
DOI: 10.1039/b909252h
Octanuclear copper(I) complexes with double-stranded ladder structures, [Cu8(-X)2(3-X)6(-dpmppm)2] (X = Cl, Br, I), were prepared using dpmppm (meso-bis[(diphenylphosphinomethyl)phenylphosphino]methane) and were readily converted to linear tetranuclear complexes, [Cu4(-X)3(-dpmppm)2L2]+ (L = dmso, dmf, py, isocyanide).
Photochromic and electrochromic properties of oxo-centred triruthenium compounds with a dithienylethene bis(phosphine) ligand
Feng-Rong Dai, Bin Li, Lin-Xi Shi, Li-Yi Zhang and Zhong-Ning Chen,
Dalton Trans., 2009, 10244
DOI: 10.1039/b913239b
The oxo-centred triruthenium complexes with a dithienylethene bis(phosphine) ligand display highly reversible electrochromic behaviour through oxidation/reduction as well as photochromic properties through ring-closing and ring-opening processes.
A versatile low temperature synthetic route to Zintl phase precursors: Na4Si4, Na4Ge4 and K4Ge4 as examples
Xuchu Ma, Fen Xu, Tonya M. Atkins, Andrea M. Goforth, Doinita Neiner, Alexandra Navrotsky and Susan M. Kauzlarich,
Dalton Trans., 2009, 10250
DOI: 10.1039/b913320h
A general method has been developed to prepare alkali metal-tetrel Zintl phases. The optimized method utilizes commercially available powdered alkali metal hydrides and powdered tetrels, low temperatures, and common laboratory equipment to achieve phase pure materials.
Synthesis and characterization of neutral iron(II) and ruthenium(II) complexes with the isocyanotriphenylborate ligand
Yan Zhou, Hong-Ping Xiao, Ling-Chen Kang, Jing-Lin Zuo, Cheng-Hui Li and Xiao-Zeng You,
Dalton Trans., 2009, 10256
DOI: 10.1039/b914262b
Neutral iron(II) and ruthenium(II) complexes with an isocyanotriphenylborate ligand have been synthesized by a facile method and characterized by structural analyses. The electron withdrawing triphenylborate group on the isocyanide ligands has a pronounced effect on the photophysical properties of complexes 1–6.
Syntheses, characterisation, magnetism and photoluminescence of a homodinuclear Ln(III)-Schiff base family
Joy Chakraborty, Aurkie Ray, Guillaume Pilet, Guillaume Chastanet, Dominique Luneau, Raymond F. Ziessel, Loïc J. Charbonnière, Luca Carrella, Eva Rentschler, M. S. El Fallah and Samiran Mitra,
Dalton Trans., 2009, 10263
DOI: 10.1039/b908910a
Nd3+, Pr3+, Sm3+ and Tb3+ complexes of a N3O2 Schiff base ligand display an antiferromagnetic interaction operating via the double phenolato bridges. Photoluminescence of the Tb3+ in the solid state reveals back energy transfer to the ligand.
New crystal structure and characterization of lanthanum tungstate 
La6WO12
prepared by freeze-drying synthesis
Anna Magrasó, Carlos Frontera, David Marrero-López and Pedro Núñez,
Dalton Trans., 2009, 10273
DOI: 10.1039/b916981b
Lanthanum tungstates with a La/W atomic ratio between 4.8 and 6.0 have been prepared by freeze-drying. These materials crystallize in a cubic structure and present high conductivity.
Reactivity of 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, structures and magnetic properties of polynuclear and polymeric Mn(II), Cu(II) and Cd(II) complexes
Zhao-Sha Meng, Lei Yun, Wei-Xiong Zhang, Chao-Gang Hong, Radovan Herchel, Yong-Cong Ou, Ji-Dong Leng, Meng-Xia Peng, Zhuo-Jia Lin and Ming-Liang Tong,
Dalton Trans., 2009, 10284
DOI: 10.1039/b914702k
Five new complexes have been obtained from the reactions of Mn(II), Cu(II) and Cd(II) salts with abpt and structurally and magnetically characterized. The magneto-structural relationship has been discussed.
The mechanism of N-vinylindole formation via tandem imine formation and cycloisomerisation of o-ethynylanilines
Danielle F. Kennedy, Ainara Nova, Anthony C. Willis, Odile Eisenstein and Barbara A. Messerle,
Dalton Trans., 2009, 10296
DOI: 10.1039/b915269e
A mechanism is presented for the Ir(III) catalysed formation of an unexpected N-vinyl-indole product from an aniline derivative in acetone solvent, as a combined experimental/theoretical study.
Copper(II) and zinc(II) complexes with C-glycoside-pendant dipicolylamine (DPA)-amino acid conjugates
Yuji Mikata, Shoko Fujii, Masami Naemura, Kyoko Takahashi and Yuka Noguchi,
Dalton Trans., 2009, 10305
DOI: 10.1039/b915481g
A series of dipicolylamine (DPA)-functionalized amino acid ligands with a pendant C-glycosyl amide has been synthesized and complexed with Cu(II) and Zn(II).
Versatile binding behaviour of 4,6-dimethyl-1,2,3-triazolo[4,5-d]-pyrimidin-5,7-dionato in the presence of bipyrimidine. Supramolecular H-bond architectures
Carmen R. Maldonado, Miguel Quirós, Juan M. Salas and Antonio Rodríguez-Diéguez,
Dalton Trans., 2009, 10311
DOI: 10.1039/b913541c
Complexes containing the ligands 4,6-dimethyl-1,2,3-triazolo-[4,5-d]-pyrimidin-5,7-dionato and bipyrimidine and the metal ions Zn(II), Cd(II) (dinuclear) or Cu(II) (1D polymer). Three binding modes observed for the triazolopyrimidine ligand: N1- and N2-monodentate and N1,N2-bridging.
Synthesis, characterization, and electrocatalytic and electrical properties of novel ball-type four cyclopentyldisilanoxy-POSS bridged metallophthalocyanines
Tanju Ceyhan, Ahmet Alt
ndal, Ali Rza Özkaya, Bekir Salih and Özer Bekaro
lu,
Dalton Trans., 2009, 10318
DOI: 10.1039/b913185j
Among Zn2Pc2, Co2Pc2 and Cu2Pc2, the cobalt complex displayed extraordinary catalytic activity towards oxygen reduction for the potential application in fuel cell technology.
Cerium(IV) fluoride and fluoride-arsenate frameworks
Jessica Rouse and Mark T. Weller,
Dalton Trans., 2009, 10330
DOI: 10.1039/b912262a
Porous frameworks formed from linked CeIV(O,F)n and TO4 polyhedra demonstrate the great structural versatility that is possible when metal centres are linked by a mixture of anions.
Synthesis, structure, and first-principles calculations of [TcBr2(PMe3)4] and [Tc2Br4(PMe3)4] complexes
Frederic Poineau, Philippe F. Weck, Paul M. Forster, Alfred P. Sattelberger and Kenneth R. Czerwinski,
Dalton Trans., 2009, 10338
DOI: 10.1039/b915968a
The compounds TcBr2(PMe3)4 and Tc2Br4(PMe3)4 were synthesized from TcBr3 and their structures solved by single-crystal XRD and DFT calculations.
Co(II) and Cr(III) complexes of formate–formamide mixed ligands: synthesis, structures, single crystal-to-single crystal transformation and magnetic behaviour
Oindrila Sengupta, You Song and Partha Sarathi Mukherjee,
Dalton Trans., 2009, 10343
DOI: 10.1039/b916878h
Solvothermal treatment of an equimolar mixture of Co(NO3)2·6H2O, HCONH2 and NaN3 in MeOH at 100 °C yielded a three-dimensional network Co(HCOO)2(HCONH2)2·HCONH2 ( 1a) containing formamides in the pores of the framework which undergo single crystal-to-single crystal transformation to a desolvated framework.
Structural evolution in the nanoscale diffusion process: a Au–Sn bimetallic system
Kuai Yu, Tao Yao, Zhiyun Pan, Shiqiang Wei and Yi Xie,
Dalton Trans., 2009, 10353
DOI: 10.1039/b916215a
During a nanoscale diffusion process, the structure evolution of a Au–Sn bimetallic system has been successfully demonstrated which sequentially forms stable Au/AuSn, AuSn, AuSn/AuSn2 and AuSn2 nanocrystals rather than disordered alloys or alloys with equal Sn atomic distribution.
Selective binding of benzenediol derivatives by simultaneous non-covalent interactions in bis-Pt(II) aza-aromatic host–guest system
Robert Trokowski, Shigehisa Akine and Tatsuya Nabeshima,
Dalton Trans., 2009, 10359
DOI: 10.1039/b911602h
The metallo-dimer self-assembly was quantitatively obtained via Pt(II) complexation. The spectroscopic studies, X-ray analysis, and DFT calculation suggest that several kinds of Coulombic forces including - stacking interactions and CHO hydrogen bonds enable this metallo-host to selectively bind the benzenediol guest molecules.
The fate of silver ions in the photochemical synthesis of gold nanorods: an Extended X-ray Absorption Fine Structure Analysis
Francesco Giannici, Tiziana Placido, Maria Lucia Curri, Marinella Striccoli, Angela Agostiano and Roberto Comparelli,
Dalton Trans., 2009, 10367
DOI: 10.1039/b917572e
Water-soluble gold nanorods were synthesized using a silver-ion mediated photochemical route under UV irradiation. EXAFS measurements on the Ag K-edge were performed in order to investigate the fate of the silver ions.
Back cover
Dalton Trans., 2009, 10375
DOI: 10.1039/b923044k
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