Raising the Bar in Aromatic Donor–Acceptor Interactions with Cyclic Trinuclear Gold(I) Complexes as Strong π-Donors

2018 ◽  
Vol 140 (51) ◽  
pp. 17932-17944 ◽  
Author(s):  
Raiko Hahn ◽  
Fabian Bohle ◽  
Wenwen Fang ◽  
Andreas Walther ◽  
Stefan Grimme ◽  
...  
Keyword(s):  
Aromatic Donor ◽  
Donor Acceptor

Homoleptic 2,2′-bipyridine metalates(–I) of iron and cobalt, one cocrystallized with an anthracene radical anion and the other with neutral anthracene

2014 ◽  
Vol 70 (8) ◽  
pp. 828-832
Author(s):  
William W. Brennessel ◽  
John E. Ellis
Keyword(s):  
Radical Anion ◽  
Complex Cation ◽  
Solvent Molecule ◽  
Inversion Center ◽  
Asymmetric Unit ◽  
Aromatic Donor ◽  
Donor Acceptor ◽  
Anthracene Molecule ◽  
Packing Arrangement ◽  
Solvent Molecules

Homoleptic 2,2′-bipyridine (bipy) metalates of iron and cobalt have been synthesized directly from the corresponding homoleptic anthracene metalates. In the iron structure, bis[([2.2.2]cryptand)potassium(I)] tris(2,2′-bipyridine)ferrate(–I) anthracene(–I), [K(C18H36N2O6)]2[Fe(C10H8N2)3](C14H10), the asymmetric unit contains one potassium complex cation in a general position, the Fe center and one and a half bipy ligands of the ferrate complex on a crystallographic twofold axis that includes the Fe atom, and one half of an anthracene radical anion whose other half is generated by a crystallographic inversion center. The cations and anions are well separated and the geometry about the Fe center is essentially octahedral. In the cobalt structure, ([2.2.2]cryptand)potassium(I) bis(2,2′-bipyridine)cobaltate(–I) anthracene hemisolvate tetrahydrofuran (THF) disolvate, [K(C18H36N2O6)][Co(C10H8N2)2]·0.5C14H10·2C4H8O, the asymmetric unit contains the cation, anion, and both cocrystallized THF solvent molecules in general positions, and one half of a cocrystallized anthracene molecule whose other half is generated by a crystallographic inversion center. The cation and anion are well separated and the ligand planes in the cobaltate anion are periplanar. Each anthracene molecule is midway between and is oriented perpendicular to a pair of symmetry-related bipy ligands such that aromatic donor–acceptor interactions may play a role in the packing arrangement. The lengths of the bonds that connect the bipy rings support the assertion that the ligands are bipy radical anions in the iron structure. However, in the case of cobalt, these lengths are between the known ranges for a bipy radical anion and a bipy dianion, and therefore no conclusion can be made from the crystallography alone. One cocrystallized THF solvent molecule in the cobalt structure was modeled as disordered over three positions with appropriate geometric and thermal restraints, which resulted in a refined component mass ratio of 0.412 (4):0.387 (3):0.201 (3).

Aromatic donor–acceptor interaction promoted catalyst assemblies for hydrolytic kinetic resolution of epichlorohydrin

2019 ◽  
Vol 17 (1) ◽  
pp. 172-180 ◽  
Author(s):  
Daniel R. Blechschmidt ◽  
Matthew D. Woodhouse ◽  
Sebastien Inagaki ◽  
Melita Whitfield ◽  
Ayokunnumi Ogunsanya ◽  
...  
Keyword(s):  
Kinetic Resolution ◽  
Catalyst Activity ◽  
Acceptor Interaction ◽  
Hydrolytic Kinetic Resolution ◽  
Aromatic Donor ◽  
Donor Acceptor

The catalyst activity of bis-acceptor functionalized Co(iii)–salen in hydrolytic kinetic resolution can be fine-tuned by introducing a proper donor compound.

scholarly journals SNAr catalysis enhanced by an aromatic donor–acceptor interaction; facile access to chlorinated polyfluoroarenes

2017 ◽  
Vol 53 (54) ◽  
pp. 7545-7548 ◽  
Author(s):  
Sameera Senaweera ◽  
Jimmie D. Weaver
Keyword(s):  
Acceptor Interaction ◽  
Aromatic Donor ◽  
Donor Acceptor

The use of TMSCl skews the thermodynamics of the Halex reaction, allowing catalysis and access to functionalized fluoroarenes.

scholarly journals Sequence-complementarity dependent co-assembly of phosphodiester-linked aromatic donor-acceptor trimers

2021 ◽  
Author(s):  
Nadeema Appukutti ◽  
Alex de Vries ◽  
Prashant Gudeangadi ◽  
Bini Claringbold ◽  
Michelle Garrett ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Nucleic Acids ◽  
Supramolecular Chemistry ◽  
Self Assembly ◽  
Functional Nanomaterials ◽  
Monomer Sequence ◽  
Complementary Sequences ◽  
Sequence Complementarity ◽  
Aromatic Donor ◽  
Donor Acceptor

Development of the interplay between monomer sequence and supramolecular chemistry is critical if chemistry is to recapitulate the properties of proteins and nucleic acids in the synthetic world. We have created sequenced trimers of aromatic donor/acceptor units which participate in charge-transfer interactions, linked by phosphodiesters. Each sequence displays its own characteristic self-assembly, and moreover complementary sequences interact with each other to produce new nanostructures and emergent thermochromism. This finding paves the way towards new functional nanomaterials which make bio-analogous use of sequence to tune structure.

Supramolecular alternate donor–acceptor copolymers mediated by Pt⋯Pt metal–metal interactions and their photocatalytic applications

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14005-14011 ◽  
Author(s):  
Zhao Gao ◽  
Zijian Li ◽  
Zongchun Gao ◽  
Feng Wang
Keyword(s):  
Functional Materials ◽  
Metal Interactions ◽  
Metal Metal ◽  
Aromatic Donor ◽  
Donor Acceptor ◽  
Photocatalytic Applications

Precise arrangement of the aromatic donor–acceptor units is of paramount importance to dictate the performance of multi-component π-functional materials.

scholarly journals A Systematic Study of Thermochromic Aromatic Donor−Acceptor Materials

2010 ◽  
Vol 75 (22) ◽  
pp. 7682-7690 ◽  
Author(s):  
Paul M. Alvey ◽  
Joseph J. Reczek ◽  
Vincent Lynch ◽  
Brent L. Iverson
Keyword(s):  
Systematic Study ◽  
Aromatic Donor ◽  
Donor Acceptor

Aromatic donor–acceptor interactions in non-polar environments

2015 ◽  
Vol 51 (39) ◽  
pp. 8265-8268 ◽  
Author(s):  
Giles M. Prentice ◽  
Sofia I. Pascu ◽  
Sorin V. Filip ◽  
Kevin R. West ◽  
G. Dan Pantoş
Keyword(s):  
Aromatic Donor ◽  
Donor Acceptor

We have evaluated the strength of aromatic donor–acceptor interactions between dialkyl naphthalenediimide and dialkoxynaphthalene in non-polar environments.

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