On the opto-electronic properties of phosphine and thiolate-protected undecagold nanoclusters

2014 ◽  
Vol 16 (35) ◽  
pp. 18749-18758 ◽  
Author(s):  
Francesco Muniz-Miranda ◽  
Maria Cristina Menziani ◽  
Alfonso Pedone
Keyword(s):  
Electronic Properties ◽  
Metal Metal ◽  
Metal Ligand

A schematic description of the UV-vis spectrum of Au11(PPh3)7Cl3 nanoclusters. Metal → metal transitions are ubiquitous, metal → ligand transitions appear above the visible threshold, while ligand → metal and ligand → ligand transitions are much rarer in the investigated range of energies.

Novel routes to heteronuclear metal clusters containing rhodium

1982 ◽  
Vol 308 (1501) ◽  
pp. 87-93 ◽  
Keyword(s):  
Similar Pattern ◽  
Metal Clusters ◽  
Frontier Orbitals ◽  
Metal Metal ◽  
Metal Metal Bonds ◽  
Metal Bonds ◽  
Metal Ligand

Logical methods for preparing small metal clusters with heteronuclear metal-metal bonds can be devised by appreciating the isolobal relationships that exist between certain metal ligand combinations and organic fragments. Thus the group W(CO) 2 (r|-C 5 H 5 ) has frontier orbitals of similar pattern to those of CH, while those of Rh(CO) (r|-C 5 Me 5 ) and CH 2 are also similar. This paper shows how such ideas have been employed to generate compounds with bonds between rhodium and other metals.

Non-linearity with metal-metal ligand complex reactions in flow injection systems. Metal-thiocyanate reactions

1997 ◽  
Vol 350 (1-2) ◽  
pp. 37-50 ◽  
Author(s):  
J.F. van Staden ◽  
C. Saling ◽  
D. Malan ◽  
R.E. Taljaard
Keyword(s):  
Flow Injection ◽  
Ligand Complex ◽  
Metal Metal ◽  
Metal Ligand

Controlling Near-Infrared Chromophore Electronic Properties through Metal–Ligand Orbital Alignment

2017 ◽  
Vol 139 (7) ◽  
pp. 2808-2815 ◽  
Author(s):  
Nicole M. Mews ◽  
Andreas Berkefeld ◽  
Gerald Hörner ◽  
Hartmut Schubert
Keyword(s):  
Electronic Properties ◽  
Near Infrared ◽  
Ligand Orbital ◽  
Metal Ligand

Structural bonding trends in rhenium carbonylcluster chemistry : metal–metal metal–ligand bondlengths calculated strengths

Polyhedron ◽  
1998 ◽  
Vol 17 (17) ◽  
pp. 2803-2815 ◽  
Author(s):  
Katherine M Hillary ◽  
Andrew K Hughes ◽  
Karen L Peat ◽  
Ken Wade
Keyword(s):  
Structural Bonding ◽  
Metal Metal ◽  
Metal Ligand

Experimental charge density in the transition metal complex Mn2(CO)10: a comparative study

2003 ◽  
Vol 59 (2) ◽  
pp. 234-247 ◽  
Author(s):  
Louis J. Farrugia ◽  
Paul R. Mallinson ◽  
Brian Stewart
Keyword(s):  
Charge Density ◽  
Transition Metal Complex ◽  
Topological Analysis ◽  
Atoms In Molecules ◽  
Topological Properties ◽  
B3lyp Level ◽  
Metal Metal ◽  
Density Study ◽  
Experimental Charge Density ◽  
Metal Ligand

An accurate experimental charge density study at 100 K of Mn2(CO)10 [bis(pentacarbonylmanganese)(Mn—Mn)] has been undertaken. A comparison with previously reported structural determinations reveals no evidence for significant Mn—Mn bond lengthening between 100 and 296 K. The nature of the metal–metal and metal–ligand atom interactions has been studied by topological analysis using the Atoms in Molecules (AIM) approach of Bader [(1990), Atoms in Molecules: a Quantum Theory.Oxford: Clarendon Press]. An analysis of the density ρ(r), the Laplacian of the density ∇2ρ(r b ) and the total energy densities H(r b ) at the bond critical points is used to classify all the chemical bonds as covalent in nature. The results are compared qualitatively and quantitatively with previous charge density studies on this molecule and DFT calculations at the 6-311+G* B3LYP level. The topological properties of the theoretical and experimental densities are in close agreement.

Multishell EXAFS Fitting Analysis of a Compositionally Precise Thiolate-Gold Nanocluster

2014 ◽  
Vol 1655 ◽  
Author(s):  
Daniel M. Chevrier ◽  
Amares Chatt ◽  
Peng Zhang ◽  
Chenjie Zeng ◽  
Rongchao Jin
Keyword(s):  
Structural Information ◽  
Gold Nanoclusters ◽  
Gold Nanocluster ◽  
Experimental Conditions ◽  
X Ray ◽  
Metal Metal ◽  
Ligand Interactions ◽  
Novel Applications ◽  
X Ray Absorption ◽  
Metal Ligand

ABSTRACTThiolate-gold nanoclusters exhibit unique optical, magnetic and chiral properties, which are attractive for novel applications in nanotechnology. A fundamental challenge facing these nanomaterials is being able to study and understand their physical properties in various experimental conditions. To overcome this, extended X-ray absorption fine structure (EXAFS) spectroscopy can be employed to probe the Au local structure of thiolate-gold nanoclusters in a variety of conditions, providing valuable structural information from multiple bonding environments (i.e. metal-metal and metal-ligand interactions). This study discusses a methodology for conducting a multishell EXAFS fitting analysis that can be implemented for thiolate-gold nanocluster systems. Specifically, experimental and simulated EXAFS data for Au36(SR)24 nanoclusters are examined with a total of 5 scattering paths fitted to the experimental data.

Stimuli-responsive metallo-supramolecular polymer films: design, synthesis and device fabrication

2014 ◽  
Vol 2 (44) ◽  
pp. 9331-9341 ◽  
Author(s):  
Masayoshi Higuchi
Keyword(s):  
Polymer Films ◽  
Chemical Properties ◽  
Device Fabrication ◽  
Supramolecular Polymer ◽  
Stimuli Responsive ◽  
Design Synthesis ◽  
Metal Interactions ◽  
Metal Metal ◽  
Metal Ligand

Based on the metal–ligand or metal–metal interactions, metallo-supramolecular polymer films showed stimuli-responsive electro- and photo-chemical properties such as electrochromism.

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