Contractile and extensible molecular figures-of-eight

Chemistry : a European Journal
Frédéric NiessJ P Sauvage

Abstract

Two large rings, 66- (m-66) and 78-membered (m-78) rings, each one incorporating two pairs of transition-metal-complexing units, have been prepared. The coordinating fragments are alternating bi- and tridentate chelating groups, namely, 2,9-diphenyl-1,10-phenanthroline (dpp) and 2,2',2',6''-terpyridine (terpy) respectively. Both macrocycles form molecular figures-of-eight in the presence of Fe(II) , affording a classical bis-terpy complex as the central core. The larger m-78 ring can accommodate a four-coordinate Cu(I) center with the formation of a {Cu(dpp)2 }(+) central complex and a highly twisted figure-of-eight backbone, whereas m-66 is too small to coordinate Cu(I) . Macrocycle m-78 thus affords stable complexes with both Fe(II) and Cu(I) ; the ligand around the metal changes from (terpy)2 to (dpp)2 . This bimodal coordination situation allows for a large amplitude rearrangement of the organic backbone. When coordinated to preferentially octahedrally coordinated Fe(II) or Cu(II) , the height of the molecule along the coordinating axis of the tridentate terpy ligands is only about 11 Å, whereas the height of the molecule along the same vertical axis is several times as large for the tetrahedral Cu(I) complex. Chemically or...Continue Reading

References

Sep 18, 1999·Nature·T R KellyR A Silva
Sep 18, 1999·Nature·N KoumuraB L Feringa
Aug 19, 2000·Science·C P CollierJ R Heath
Jun 20, 2001·Accounts of Chemical Research·J F Stoddart
Jun 20, 2001·Accounts of Chemical Research·A Harada
Aug 6, 2003·Angewandte Chemie·Hans-Jörg SchneiderNino Lomadze
Jan 24, 2004·Chemical Communications : Chem Comm·T F Otero, M T Cortes
Jul 30, 2005·Science·Armagan KoçerBen L Feringa
Aug 30, 2005·Nature Materials·José BernáFrancesco Zerbetto
Jan 25, 2006·Proceedings of the National Academy of Sciences of the United States of America·Vincenzo BalzaniJ Fraser Stoddart
Jul 21, 2006·Chemical Communications : Chem Comm·Susumu TsudaTakahiro Kaneda
Nov 30, 2006·Angewandte Chemie·Euan R KayFrancesco Zerbetto
Jan 18, 2007·Journal of the American Chemical Society·Thoi D NguyenJeffrey I Zink
Mar 3, 2007·Angewandte Chemie·Hans-Jörg Schneider, Kazuaki Kato
Aug 1, 2008·Organic Letters·Frédéric CoutrotEric Busseron
Aug 30, 2008·Angewandte Chemie·Jishan WuJ Fraser Stoddart
Sep 2, 2008·Chemical Communications : Chem Comm·Ryan E DawsonChristopher J Easton
Apr 24, 2009·Journal of the American Chemical Society·Alexander I Prikhod'ko, Jean-Pierre Sauvage
Jun 12, 2010·Angewandte Chemie·Gregory J E DavidsonStephen J Loeb
Apr 1, 1998·Advanced Materials·T F Otero, J M Sansieña
Oct 20, 2012·Angewandte Chemie·Guangyan DuNicolas Giuseppone
Dec 13, 2012·Nature Communications·Yoshinori TakashimaAkira Harada
Feb 8, 2014·Angewandte Chemie·Carson J BrunsJ Fraser Stoddart
Feb 12, 2014·Journal of the American Chemical Society·Carson J BrunsJ Fraser Stoddart
Apr 10, 2014·Journal of the American Chemical Society·Frédéric NiessJean-Pierre Sauvage
Jun 1, 2014·Accounts of Chemical Research·Carson J Bruns, J Fraser Stoddart
Dec 17, 1997·Journal of the American Chemical Society·Aude LivoreilBarbara Ventura
Oct 1, 1994·Journal of the American Chemical Society·Aude LivoreilJean-Pierre Sauvage

❮ Previous
Next ❯

Citations

Oct 17, 2015·Journal of the American Chemical Society·Tamara KosikovaDouglas Philp
Jan 5, 2017·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Mathilde BervilleJean Weiss
May 22, 2018·Chemical Science·Thomas BrandlMarcel Mayor
Feb 27, 2016·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Dhiredj C JagesarAlbert M Brouwer
Sep 16, 2020·Angewandte Chemie·Canjia ZhaiBradley D Smith
Nov 23, 2018·Journal of the American Chemical Society·Anna J McConnellJonathan R Nitschke

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.