Correlation of ligand field excited-state energies with ligand field strength in (polypyridine)ruthenium(II) complexes

1985 ◽  
Vol 24 (12) ◽  
pp. 1758-1760 ◽  
Author(s):  
William M. Wacholtz ◽  
Roy A. Auerbach ◽  
Russell H. Schmehl ◽  
Mario Ollino ◽  
William R. Cherry
Keyword(s):  
Excited State ◽  
Field Strength ◽  
Ligand Field

ChemInform Abstract: CORRELATION OF LIGAND FIELD EXCITED-STATE ENERGIES WITH LIGAND FIELD STRENGTH IN (POLYPYRIDINE)RUTHENIUM(II) COMPLEXES

1985 ◽  
Vol 16 (41) ◽  
Author(s):  
W. M. WACHOLTZ ◽  
R. A. AUERBACH ◽  
R. H. SCHMEHL ◽  
M. OLLINO ◽  
W. R. CHERRY
Keyword(s):  
Excited State ◽  
Field Strength ◽  
Ligand Field

scholarly journals Synthesis, Characterization and Photophysical Properties of a New 2,5-Di(aryl)phosphole Derivative and Their Trigonal Copper-Phosphole Complexes

2020 ◽  
Author(s):  
Neskarlys Rios ◽  
Franmerly Fuentes ◽  
Juan Manuel Garcia Garfido ◽  
Yomaira Otero
Keyword(s):  
Field Strength ◽  
Fluorescence Spectroscopy ◽  
Photophysical Properties ◽  
High Yield ◽  
Quantum Yields ◽  
Ligand Field ◽  
Emission Energy ◽  
Esi Ms

<div>A new phosphole derivative 2,5-di(2-quinolyl)-1-phenylphosphole (<b>1</b>) was synthesized by using the Fagan-Nugent method. Phosphole was obtained as an air stable solid in high yield (73%). Additionally, two new copper phosphole complexes [CuX(Phosphole)<sub>2</sub>] (X = Cl (<b>2a</b>), I (<b>2b</b>), Phosphole = <b>1</b>) have been synthesized by reaction of CuX (X = Cl, I) and phosphole derivative (<b>1</b>). All compound were characterized by NMR, ESI-MS, UV–Vis and fluorescence spectroscopy. The photophysical properties of all compounds were analyzed, UV-Vis spectra of the complexes <b>2a-b</b> shown π–π* transitions with shift very similar to the found in the free phosphole due to that their symmetrical structures inhibits efficient ILCT. We have found that the compounds <b>1</b>, <b>2a-b</b> exhibited fluorescence between 460 and 583 nm with quantum yields of Φ<sub>f</sub> = 0.04 – 0.11. The emission energy of <b>2b</b> is higher than <b>2a</b>, suggesting that λ<sub>max</sub> is affected by the ligand-field strength of the halogen ions in the complexes (I<sup>-</sup> < Cl<sup>-</sup> ).</div>

scholarly journals Synthesis, Characterization and Photophysical Properties of a New 2,5-Di(aryl)phosphole Derivative and Their Trigonal Copper-Phosphole Complexes

2020 ◽  
Author(s):  
Neskarlys Rios ◽  
Franmerly Fuentes ◽  
Juan Manuel Garcia Garfido ◽  
Yomaira Otero
Keyword(s):  
Field Strength ◽  
Fluorescence Spectroscopy ◽  
Photophysical Properties ◽  
High Yield ◽  
Quantum Yields ◽  
Ligand Field ◽  
Emission Energy ◽  
Esi Ms

<div>A new phosphole derivative 2,5-di(2-quinolyl)-1-phenylphosphole (<b>1</b>) was synthesized by using the Fagan-Nugent method. Phosphole was obtained as an air stable solid in high yield (73%). Additionally, two new copper phosphole complexes [CuX(Phosphole)<sub>2</sub>] (X = Cl (<b>2a</b>), I (<b>2b</b>), Phosphole = <b>1</b>) have been synthesized by reaction of CuX (X = Cl, I) and phosphole derivative (<b>1</b>). All compound were characterized by NMR, ESI-MS, UV–Vis and fluorescence spectroscopy. The photophysical properties of all compounds were analyzed, UV-Vis spectra of the complexes <b>2a-b</b> shown π–π* transitions with shift very similar to the found in the free phosphole due to that their symmetrical structures inhibits efficient ILCT. We have found that the compounds <b>1</b>, <b>2a-b</b> exhibited fluorescence between 460 and 583 nm with quantum yields of Φ<sub>f</sub> = 0.04 – 0.11. The emission energy of <b>2b</b> is higher than <b>2a</b>, suggesting that λ<sub>max</sub> is affected by the ligand-field strength of the halogen ions in the complexes (I<sup>-</sup> < Cl<sup>-</sup> ).</div>

scholarly journals Using Ultrafast X-ray Spectroscopy To Address Questions in Ligand-Field Theory: The Excited State Spin and Structure of [Fe(dcpp)2]2+

2019 ◽  
Vol 58 (14) ◽  
pp. 9341-9350 ◽  
Author(s):  
Alexander Britz ◽  
Wojciech Gawelda ◽  
Tadesse A. Assefa ◽  
Lindsey L. Jamula ◽  
Jonathan T. Yarranton ◽  
...  
Keyword(s):  
Field Theory ◽  
Excited State ◽  
Ligand Field ◽  
Ligand Field Theory ◽  
X Ray ◽  
State Spin

scholarly journals Outer-sphere effects on ligand-field excited-state dynamics: solvent dependence of high-spin to low-spin conversion in [Fe(bpy)3]2+

2020 ◽  
Vol 11 (20) ◽  
pp. 5191-5204 ◽  
Author(s):  
Jennifer N. Miller ◽  
James K. McCusker
Keyword(s):  
Excited State ◽  
Reorganization Energy ◽  
Outer Sphere ◽  
Ligand Field ◽  
Spin Conversion ◽  
Energy Effect ◽  
Time Resolved ◽  
Excited State Dynamics ◽  
State Recovery ◽  
Solvent Dependence

Time-resolved spectroscopic measurements of ground-state recovery for [Fe(bpy)3]2+ reveal that the solvent can induce an outer-sphere reorganization energy effect on excited-state dynamics involving metal-centered ligand-field electronic states.

Control of Ligand Field Strength through Intra- and Interligand Contact. Octahedral Iron(II) Poly(pyrazolyl)borate Complexes

1995 ◽  
Vol 34 (15) ◽  
pp. 3928-3934 ◽  
Author(s):  
Yoshiki Sohrin ◽  
Hisao Kokusen ◽  
Masakazu Matsui
Keyword(s):  
Field Strength ◽  
Ligand Field ◽  
Borate Complexes

Ligand-Field Strength and Symmetry-Restricted Covalency in CuIIComplexes - a Near-Edge X-ray Absorption Fine Structure Spectroscopy and Time-Dependent DFT Study

2015 ◽  
Vol 2015 (16) ◽  
pp. 2707-2713 ◽  
Author(s):  
Giulia Mangione ◽  
Luciano Pandolfo ◽  
Mauro Sambi ◽  
Giovanni Ligorio ◽  
Marco Vittorio Nardi ◽  
...  
Keyword(s):  
Fine Structure ◽  
Field Strength ◽  
Time Dependent ◽  
Dft Study ◽  
Ligand Field ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption

Designing air-stable cyclometalated Fe(ii) complexes: stabilization via electrostatic effects

2019 ◽  
Vol 48 (2) ◽  
pp. 374-378 ◽  
Author(s):  
Daniel Charles Ashley ◽  
Sriparna Mukherjee ◽  
Elena Jakubikova
Keyword(s):  
Field Strength ◽  
Iron Complexes ◽  
Ligand Field ◽  
Electrostatic Effects

Substitution of EWGs onto the cyclometelated iron complexes electrostatically stabilizes the Fe(ii) center while still preserving the increased ligand field strength.

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