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 Heterobimetallic lanthanide‐coinage metal compounds featuring possible metal‐metal interactions in the exited state

2021 ◽  
Author(s):  
Peter Werner Roesky ◽  
Milena Dahlen ◽  
Niklas Reinfandt ◽  
Chengyu Jin ◽  
Michael T. Gamer ◽  
...  
Keyword(s):  
Metal Compounds ◽  
Coinage Metal ◽  
Metal Interactions ◽  
Metal Metal

Tuning metal–metal interactions for cooperative small molecule activation

2021 ◽  
Author(s):  
Qiuran Wang ◽  
Sam H. Brooks ◽  
Tianchang Liu ◽  
Neil C. Tomson
Keyword(s):  
Small Molecule ◽  
Small Molecule Activation ◽  
Feature Article ◽  
Metal Interactions ◽  
Recent Advances ◽  
Metal Metal

This Feature Article describes recent advances in the design of multinucleating ligands that support small molecule activation chemistry.

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).

scholarly journals Effect of Metal−Metal Interactions on Electron Transfer:  an STM Study of One-Dimensional Metal String Complexes

2004 ◽  
Vol 108 (3) ◽  
pp. 959-964 ◽  
Author(s):  
Shu-Yi Lin ◽  
I-Wen Peter Chen ◽  
Chun-hsien Chen ◽  
Ming-Hsun Hsieh ◽  
Chen-Yu Yeh ◽  
...  
Keyword(s):  
Electron Transfer ◽  
One Dimensional ◽  
Metal Interactions ◽  
Metal Metal

Metal-Metal Interactions in Heterobimetallic Complexes with Dinucleating Redox-Active Ligands

2016 ◽  
Vol 128 (7) ◽  
pp. 2452-2456 ◽  
Author(s):  
Daniël L. J. Broere ◽  
Dieuwertje K. Modder ◽  
Eva Blokker ◽  
Maxime A. Siegler ◽  
Jarl Ivar van der Vlugt
Keyword(s):  
Redox Active Ligands ◽  
Metal Interactions ◽  
Heterobimetallic Complexes ◽  
Redox Active ◽  
Metal Metal

Mixed Metal Oxide Interfaces: An Experimental and Theoretical Assessment of Secondary Metal Influences in Metal Impregnated Aluminas

1994 ◽  
Vol 368 ◽  
Author(s):  
M. Malaty ◽  
D. Singh ◽  
R. Schaeffer ◽  
S. Jansen ◽  
S. Lawrence
Keyword(s):  
Photoelectron Spectroscopy ◽  
Theoretical Calculations ◽  
Mixed Metal Oxide ◽  
X Ray Diffraction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Mixed Metal ◽  
Metal Interactions ◽  
Metal Metal ◽  
Bimetallic System

ABSTRACTStudies of the mixed-metal interface in metal impregnated alumina have indicated the possibility of much metal-metal and metal-substrate interaction. Studies were carried out on NiCu/Al2O3 system which was evaluated to develop a better understanding of the forces that drive modification of the catalytic selectivity of Ni in the presence of Cu. Electron Paramagnetic Resonance (EPR), Powder X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD) and theoretical calculations were carried out on this bimetallic system, using Ni,Ag/Al2O3 as a reference as Ni shows negligible electron perturbation on co-adsorbance with Ag onto alumina. XRD results indicate that gross modification of the electronic fields of Ni and Cu are due to direct coupling and intercalation into the alumina matrix. As a result of this phenomena, these materials may form a good base for the development of novel ceramics based on mixed-metal interactions where the intermetallic perturbations are driven by the substrate effects.

The metal — metal interactions in biological systems. Part I. Escherichlia coli

1990 ◽  
Vol 52 (3-4) ◽  
pp. 337-357 ◽  
Author(s):  
Wiesław Barabasz ◽  
Bogusława Hetmańska ◽  
Piotr Tomasik
Keyword(s):  
Biological Systems ◽  
Metal Interactions ◽  
Metal Metal

Metal-Metal interactions in indium(I) and thallium(I) cyclopentadienyls

1990 ◽  
Vol 109 (3) ◽  
pp. 187-189 ◽  
Author(s):  
Peter H. M. Budzelaar ◽  
J. Boersma
Keyword(s):  
Metal Interactions ◽  
Metal Metal
Sign in / Sign up

Export Citation Format

Share Document