scholarly journals Tuning ligand field strength with pendent Lewis acids: access to high spin iron hydrides

2019 ◽  
Vol 10 (21) ◽  
pp. 5539-5545 ◽  
Author(s):  
John J. Kiernicki ◽  
James P. Shanahan ◽  
Matthias Zeller ◽  
Nathaniel K. Szymczak
Keyword(s):  
Field Strength ◽  
High Spin ◽  
Lewis Acids ◽  
Ligand Field ◽  
Acid Base ◽  
Biologically Relevant ◽  
High Spin Iron

Pendent borane Lewis acids provide an avenue for changing a ligand's field strength through acid/base interactions; this strategy was highlighted within a series of biologically-relevant high spin iron hydrides.

scholarly journals A Terminal N2 Complex of High-Spin Iron(I) in a Weak, Trigonal Ligand Field

2015 ◽  
Vol 137 (28) ◽  
pp. 8940-8943 ◽  
Author(s):  
Alex McSkimming ◽  
W. Hill Harman
Keyword(s):  
High Spin ◽  
Ligand Field ◽  
High Spin Iron

Synthetic, Structural, and Spectroscopic Characterization of a Novel Family of High-Spin Iron(II) [(β-Diketiminate)(phosphanylphosphido)] Complexes

2017 ◽  
Vol 56 (18) ◽  
pp. 11030-11042 ◽  
Author(s):  
Rafał Grubba ◽  
Kinga Kaniewska ◽  
Łukasz Ponikiewski ◽  
Beata Cristóvão ◽  
Wiesława Ferenc ◽  
...  
Keyword(s):  
High Spin ◽  
Spectroscopic Characterization ◽  
High Spin Iron

scholarly journals Effects of Imidazole Deprotonation on Vibrational Spectra of High-Spin Iron(II) Porphyrinates

2013 ◽  
Vol 52 (6) ◽  
pp. 3170-3177 ◽  
Author(s):  
Chuanjiang Hu ◽  
Qian Peng ◽  
Nathan J. Silvernail ◽  
Alexander Barabanschikov ◽  
Jiyong Zhao ◽  
...  
Keyword(s):  
High Spin ◽  
Vibrational Spectra ◽  
High Spin Iron

scholarly journals Electronic, Magnetic, and Structural Characterization of the Five-Coordinate, High-Spin Iron(II) Nitrato Complex [Fe(TpivPP)(NO3)]-

2006 ◽  
Vol 45 (14) ◽  
pp. 5284-5290 ◽  
Author(s):  
Habib Nasri ◽  
Mary K. Ellison ◽  
Ben Shaevitz ◽  
Govind P. Gupta ◽  
W. Robert Scheidt
Keyword(s):  
High Spin ◽  
Structural Characterization ◽  
High Spin Iron

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>

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