Ferromagnetic coupling in d1–d3 linear oxido-bridged heterometallic complexes: ground-state models of metal-to-metal charge transfer excited states

2015 ◽  
Vol 44 (43) ◽  
pp. 18937-18944 ◽  
Author(s):  
Tao Huang ◽  
Xinyuan Wu ◽  
Xiao Song ◽  
Hao Xu ◽  
Tatyana I. Smirnova ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Ground State ◽  
Magnetic Coupling ◽  
Heterometallic Complexes ◽  
Ferromagnetic Coupling ◽  
Metal Charge ◽  
State Models ◽  
Metal Charge Transfer

Linear heterobimetallic oxido-bridged d1–d3 compounds are described which are proposed as models for magnetic coupling of MMCT excited states.

Organometallic ferromagnets

1990 ◽  
Vol 330 (1610) ◽  
pp. 205-215 ◽  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Ground State ◽  
Magnetic Coupling ◽  
Organometallic Complexes ◽  
Electron Configuration ◽  
Ferromagnetic Coupling ◽  
New Materials ◽  
Linear Chains ◽  
Configuration Mixing

Some organometallic solids comprising linear chains of alternating m 8 = 1/2 metallocenium donors, D, and cyanocarbon acceptors, A, i.e. ••• D +*A~*D+*A- * •••, exhibit cooperative magnetic phenomena, i.e. ferro-, antiferro-, ferri-, and meta-magnetism. For [Fe II (C 5 Me 5 ) 2 ]+*[T C N E ]- (Me = methyl; T C N E = tetracyanoethylene) bulk ferromagnetic behaviour is observed below the Curie temperature of 4.8 K. Replacement of Fe III with Fe II , Ni III and Cr III leads to complexes with dia-, antiferro- and ferrimagnetic behaviour, respectively. These results are consistent with a model of configuration mixing of the lowest charge transfer excited state with the ground state developed earlier to understand the magnetic coupling of such systems. The model predicts the magnetic coupling as a function of electron configuration and direction of charge transfer (retro or reverse) and is a useful guide to designing new organic and /or organometallic complexes with cooperative magnetic coupling. To test the model and identify new materials with ferromagnetic coupling new TCNE-based electron transfer salts were prepared.

Luminescent ligand-to-metal charge-transfer excited states based on pentamethylcyclopentadienyl complexes of tantalum

1992 ◽  
Vol 114 (17) ◽  
pp. 6905-6906 ◽  
Author(s):  
Scott Paulson ◽  
B. Patrick Sullivan ◽  
Jonathan V. Caspar
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Metal Charge ◽  
Metal Charge Transfer

Picosecond to Nanosecond Manipulation of Excited-State Lifetimes in Complexes with an FeII to TiIV Metal-to-Metal Charge Transfer: The Role of Ferrocene Centered Excited States

2019 ◽  
Vol 58 (22) ◽  
pp. 15320-15329 ◽  
Author(s):  
Maksim Y. Livshits ◽  
Michael D. Turlington ◽  
Carl O. Trindle ◽  
Lei Wang ◽  
Zikri Altun ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Excited States ◽  
Metal Charge ◽  
Excited State Lifetimes ◽  
Metal Charge Transfer

scholarly journals Delayed fluorescence from a zirconium(iv) photosensitizer with ligand-to-metal charge-transfer excited states

2020 ◽  
Vol 12 (4) ◽  
pp. 345-352 ◽  
Author(s):  
Yu Zhang ◽  
Tia S. Lee ◽  
Joseph M. Favale ◽  
Dylan C. Leary ◽  
Jeffrey L. Petersen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Delayed Fluorescence ◽  
Metal Charge ◽  
Metal Charge Transfer

Non-Localized Ligand-to-Metal Charge Transfer Excited States in (Cp)2Ti(IV)(NCS)2

2003 ◽  
Vol 125 (18) ◽  
pp. 5461-5470 ◽  
Author(s):  
Elizabeth L. Patrick ◽  
Chad J. Ray ◽  
Grant D. Meyer ◽  
Theodore P. Ortiz ◽  
Jason A. Marshall ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Excited States ◽  
Metal Charge ◽  
Metal Charge Transfer
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