Journal ArticleDOI
Solution behavior and magnetic properties of a novel nonanuclear copper(II) cluster
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In this paper, a nonanuclear copper(II) nanocluster (Cu9) was constructed from a well-designed multidentate pyrazole-alcohol ligand and using various small anions.Abstract:
A novel nonanuclear copper(II) nanocluster (Cu9) was constructed from a well-designed multidentate pyrazole–alcohol ligand and using various small anions. The Cu9 skeleton was found to consist of two similar Cu5 cluster units sharing one central CuII ion and to be protected by the outer organic ligand and auxiliary small anions. The solution behavior of Cu9 was studied in detail by applying the ESI-MS technique. Magnetism analysis implied the presence of antiferromagnetic interactions between the CuII ions.read more
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Journal ArticleDOI
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Journal ArticleDOI
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TL;DR: In this paper, three novel cicada-like nickel-II clusters, formulated as [Ni6(bdped)2mba)6(Hdmpz)2NO3)2(H2O)2]·4MeCN (SD/Ni6b), [Ni5(ndped) 2(tca)6 (HdMPz)(MeOH)2.2O)].
Journal ArticleDOI
A Double-Layered {Cu 9 } Nanocage with Diacylhydrazine: Synthesis, Structure and Magnetic Properties
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TL;DR: In this paper, the reaction of a multidentate diacylhydrazine ligand N,N′-bis(2-hydroxy-3-naphthoyl)oxalylhydrazide (H6hnohz) with copper acetate in the presence of pyridine (Py), resulted in a novel Cu nanocluster.
References
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Journal ArticleDOI
Magnetic bistability in a metal-ion cluster
TL;DR: In this article, it was shown that the magnetization of the Mn12 cluster is highly anisotropic and the magnetisation relaxation time becomes very long below a temperature of 4 K, giving rise to pronounced hysteresis.
Journal ArticleDOI
Crystal structure of photosystem II from Synechococcus elongatus at 3.8 A resolution.
Athina Zouni,Horst Tobias Witt,Jan Kern,Petra Fromme,Norbert Krauss,Wolfram Saenger,Peter Orth +6 more
TL;DR: The X-ray structure of photosystem II is described on the basis of crystals fully active in water oxidation, shows how protein subunits and cofactors are spatially organized and the larger subunits are assigned and the locations and orientations of the cofacters are defined.
Journal ArticleDOI
PHI: A powerful new program for the analysis of anisotropic monomeric and exchange‐coupled polynuclear d‐ and f‐block complexes
TL;DR: A new program, PHI, with the ability to calculate the magnetic properties of large spin systems and complex orbitally degenerate systems, such as clusters of d‐block and f‐block ions, is presented.
Journal ArticleDOI
Diels-Alder in Aqueous Molecular Hosts: Unusual Regioselectivity and Efficient Catalysis
TL;DR: It is found that an aqueous organopalladium cage induces highly unusual regioselectivity in the Diels-Alder coupling of Anthracene and phthalimide guests, promoting reaction at a terminal rather than central anthracene ring.
Journal ArticleDOI
Giant single-molecule magnets: a [Mn84] torus and its supramolecular nanotubes.
Anastasios J. Tasiopoulos,Alina Vinslava,Wolfgang Wernsdorfer,Khalil A. Abboud,George Christou +4 more
TL;DR: Christou et al. as discussed by the authors showed that individual molecules can function as magnets provided a new, bottom-up approach to nanoscale magnetic materials, and such molecules have since been used for a variety of applications.