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Divergent Coordination Chemistry: Parallel Synthesis of [2×2] Iron(II) Grid‐Complex Tauto‐Conformers 下载免费PDF全文
Dr. Bernhard Schäfer Dr. Jean‐François Greisch Dr. Isabelle Faus Dr. Tilmann Bodenstein Dr. Ivan Šalitroš Dr. Olaf Fuhr Priv.‐Doz. Dr. Karin Fink Prof. Dr. Volker Schünemann Prof. Dr. Manfred M. Kappes Prof. Dr. Mario Ruben 《Angewandte Chemie (International ed. in English)》2016,55(36):10881-10885
The coordination of iron(II) ions by a homoditopic ligand L with two tridentate chelates leads to the tautomerism‐driven emergence of complexity, with isomeric tetramers and trimers as the coordination products. The structures of the two dominant [FeII4 L 4]8+ complexes were determined by X‐ray diffraction, and the distinctness of the products was confirmed by ion‐mobility mass spectrometry. Moreover, these two isomers display contrasting magnetic properties (FeII spin crossover vs. a blocked FeII high‐spin state). These results demonstrate how the coordination of a metal ion to a ligand that can undergo tautomerization can increase, at a higher hierarchical level, complexity, here expressed by the formation of isomeric molecular assemblies with distinct physical properties. Such results are of importance for improving our understanding of the emergence of complexity in chemistry and biology. 相似文献
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Da‐Yu Wu Osamu Sato Yasuaki Einaga Chun‐Ying Duan 《Angewandte Chemie (International ed. in English)》2009,48(8):1337-1337
A spin‐crossover cluster with the {FeII4O4} core structure is presented by D. Y. Wu, O. Sato et al. in their Communication on page 1475 ff. The cluster is synthesized by self‐assembly and shows an abrupt spin transition, giving two high‐spin and two low‐spin states. It exhibits complete light‐induced excited spin‐state trapping effects. Importantly, synergy effects between the magnetic interaction and spin transition operate in the cluster.
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Back Cover: Non‐Porous Iron(II)‐Based Sensor: Crystallographic Insights into a Cycle of Colorful Guest‐Induced Topotactic Transformations (Angew. Chem. Int. Ed. 48/2016) 下载免费PDF全文
Santiago Rodríguez‐Jiménez Dr. Humphrey L. C. Feltham Prof. Sally Brooker 《Angewandte Chemie (International ed. in English)》2016,55(48):15182-15182
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Dr. Tran Quang Hung Dr. Ferial Terki Dr. Souleymane Kamara Mourad Dehbaoui Prof. Salam Charar Brajalal Sinha Prof. CheolGi Kim Dr. Philippe Gandit Il'ya A. Gural'skiy Dr. Gabor Molnar Dr. Lionel Salmon Dr. Helena J. Shepherd Dr. Azzedine Bousseksou 《Angewandte Chemie (International ed. in English)》2013,52(4):1058-1058
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Martin B. Duriska Dr. Suzanne M. Neville Dr. Boujemaa Moubaraki Dr. John D. Cashion Assoc. Prof Gregory J. Halder Dr. Karena W. Chapman Dr. Chérif Balde Jean‐François Létard Dr. Keith S. Murray Prof. Cameron J. Kepert Prof. Stuart R. Batten Assoc. Prof. 《Angewandte Chemie (International ed. in English)》2009,48(14):2428-2428
Continuous switching between high‐spin and low‐spin magnetic states can be accomplished by irradiation with red and green laser light, respectively. In their Communication on page 2549 ff., S. R. Batten and co‐workers report a metallo‐supramolecule that undergoes spin crossover (SCO) switching induced by temperature change or light irradiation. The SCO behavior is also dependent on the presence and nature of intercalated solvent molecules within the porous crystal structure.
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