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Supramolecular Wiring of Benzo‐1,3‐chalcogenazoles through Programmed Chalcogen Bonding Interactions
Dr. Adrian Kremer Dr. Andrea Fermi Nicolas Biot Prof. Johan Wouters Prof. Dr. Davide Bonifazi 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(16):5665-5675
The high‐yielding synthesis of 2‐substituted benzo‐1,3‐tellurazoles and benzo‐1,3‐selenazoles through a dehydrative cyclization reaction has been reported, giving access to a large variety of benzo‐1,3‐chalcogenazoles. Exceptionally, these aromatic heterocycles proved to be very stable and thus very handy to form controlled solid‐state organizations in which wire‐like polymeric structures are formed through secondary N???Y bonding interactions (SBIs) engaging the chalcogen (Y=Se or Te) and nitrogen atoms. In particular, it has been shown that the recognition properties of the chalcogen centre at the solid state could be programmed by selectively barring one of its σ‐holes through a combination of electronic and steric effects exerted by the substituent at the 2‐position. As predicted by the electrostatic potential surfaces calculated by quantum chemical modelling, the pyridyl groups revealed to be the stronger chalcogen bonding acceptors, and thus the best ligand candidate for programming the molecular organization at the solid state. In contrast, the thiophenyl group is an unsuitable substituent for establishing SBIs in this molecular system as it gives rise to chalcogen–chalcogen repulsion. The weaker chalcogen donor properties of the Se analogues trigger the formation of feeble N???Se contacts, which are manifested in similar solid‐state polymers featuring longer nitrogen–chalcogen distances. 相似文献
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Inside Cover: Photoinduced Formation of an Azobenzene‐Based CD‐Active Supramolecular Cyclic Dimer (Chem. Eur. J. 18/2015) 下载免费PDF全文
Dr. Hiromitsu Sogawa Dr. Kayo Terada Yu Miyagi Prof. Dr. Masashi Shiotsuki Prof. Dr. Yoshihito Inai Prof. Dr. Toshio Masuda Prof. Dr. Fumio Sanda 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(18):6634-6634
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Back Cover: Synthesis and Applications of (ONO Pincer)Ruthenium‐Complex‐Bound Norvalines (Chem. Asian J. 7/2016) 下载免费PDF全文
Prof. Dr. Katsuhiro Isozaki Tomoya Yokoi Ryota Yoshida Dr. Kazuki Ogata Dr. Daisuke Hashizume Dr. Nobuhiro Yasuda Prof. Dr. Koichiro Sadakane Prof. Dr. Hikaru Takaya Prof. Dr. Masaharu Nakamura 《化学:亚洲杂志》2016,11(7):1116-1116
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Inside Back Cover: Kinetically Controlled Sequential Growth of Surface‐Grafted Chiral Supramolecular Copolymers (Angew. Chem. Int. Ed. 25/2016) 下载免费PDF全文
Hendrik Frisch Eva‐Corinna Fritz Friedrich Stricker Lars Schmüser Daniel Spitzer Dr. Tobias Weidner Prof. Dr. Bart Jan Ravoo Prof. Dr. Pol Besenius 《Angewandte Chemie (International ed. in English)》2016,55(25):7265-7265
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Bobby Happ Christian Friebe Andreas Winter Dr. Martin D. Hager Dr. Richard Hoogenboom Dr. Ulrich S. Schubert Prof. Dr. 《化学:亚洲杂志》2009,4(1):154-163
The synthesis of a variety of 2‐(1H‐1,2,3‐triazol‐4‐yl)‐pyridines by click chemistry is demonstrated to provide straightforward access to mono‐functionalized ligands. The ring‐opening polymerization of ε‐caprolactone initiated by such a mono‐functionalized ligand highlights the synthetic potential of this class of bidentate ligands with respect to polymer chemistry or the attachment onto surfaces and nanoparticles. The coordination to RuII ions results in homoleptic and heteroleptic complexes with the resultant photophysical and electrochemical properties strongly dependent on the number of these ligands attached to the RuII core. 相似文献
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Inside Cover: Molecularly Defined Nanostructures Based on a Novel AAA–DDD Triple Hydrogen‐Bonding Motif (Angew. Chem. Int. Ed. 5/2016) 下载免费PDF全文
Dr. Marcus Papmeyer Clément A. Vuilleumier Dr. Giovanni M. Pavan Dr. Konstantin O. Zhurov Prof. Kay Severin 《Angewandte Chemie (International ed. in English)》2016,55(5):1568-1568
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Cover Picture: Platinum trans‐Bis(borirene) Complexes Displaying Coplanarity and Communication Across a Platinum Metal Center (Chem. Eur. J. 6/2015) 下载免费PDF全文
Prof. Dr. Holger Braunschweig Dr. Alexander Damme Dr. Rian D. Dewhurst Hauke Kelch Bret B. Macha Dr. Krzysztof Radacki Dr. Alfredo Vargas Dr. Qing Ye 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(6):2273-2273