A long-lived photo-induced metastable state of linkage isomerization accompanied with a spin transition.

@article{Sheu2012ALP,
  title={A long-lived photo-induced metastable state of linkage isomerization accompanied with a spin transition.},
  author={Chou-Fu Sheu and Che-Hsiu Shih and Kunihisa Sugimoto and Bing-Ming Cheng and Masaki Takata and Yu Wang},
  journal={Chemical communications},
  year={2012},
  volume={48 46},
  pages={
          5715-7
        }
}
In addition to the generally observed LIESST phenomenon, polymorph D of trans-[Fe(II)(abpt)(2)(NCS)(2)] exhibits a long-lived photo-induced metastable state through linkage isomerization accompanied with a spin crossover transition, which is stable up to 108 K. 
Polymorphism dependent light induced spin transition.
A photomagnetic study of orthorhombic and tetragonal low spin polymorphs of compound [Fe(L)2](BF4)2 revealed different properties and thermal stability of their metastable high spin states.
A reversible hydrogen-bond isomerization triggered by an abrupt spin crossover near room temperature.
TLDR
The spin crossover salt can be reversibly dehydrated to afford 1 , a material that also exhibits spin crossover coupled to H-bond isomerization, leading to strong kinetic effects in the thermomagnetic properties.
Hysteretic spin crossover in isomeric iron(ii) complexes.
Two mononuclear iron(ii) complexes with isomeric N,N,N-tridentate pyrimidine-based ligands were synthesized. Both complexes show reproducible hysteretic spin crossover. Low spin state to high spin
First Observation of Photoinduced Mo-CN Bond Breakage Leading to Spin Triplet Trapping in Octacyanomolybdate.
TLDR
Inspired by the results, a new compound is isolated using a photochemical pathway confirming that the photo-dissociation is also activated in solution, and a partial conversion to a triplet state possessing a significant magnetic anisotropy is shown in agreement with the theoretical studies.
Structural studies into the spin crossover behaviour of Fe(abpt)2(NCS)2 polymorphs B and D
Crystallographic analysis of the spin-crossover behaviour of [Fe(abpt)2(NCS)2], polymorph B and D, is presented focusing particularly on the high pressure structures.
Light-Induced Spin-crossover
[Fe(abpt)2(NCSe)2] polymorph A: structural studies into the spin crossover behaviour
The spin crossover behaviour of [Fe(abpt)2(NCSe)2] (abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole) polymorph A has been examined using single crystal X-ray diffraction and variable temperature
Photochromism and Photomagnetism Induced by Structural Disorder of a Crystalline Spin-Crossover FeII Complex
Photochromic and photoswitchable magnetic (photomagnetic) properties of spin-crossover (SCO) metal complexes in the solid state were observed almost at cryogenic temperature. Here we present a new
Structural and spectroscopic characterisation of the spin crossover in [Fe(abpt)(2)(NCS)(2)] polymorph A
A crystallographic and solid state spectroscopic study of the spin crossover behaviour of [Fe(abpt)2(NCS)2] (abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole) polymorph A is reported. Structural
...
1
2
3
4
...

References

SHOWING 1-10 OF 44 REFERENCES
The commensurate modulated structure of the metastable state in spin crossover complex [Fe(abpt)2(NCS)2].
Two new polymorphs (C and D) of [t-Fe(abpt)(2)(NCS)(2)] are characterized, a commensurate modulated structure with the c axis tripled in the thermally quenched metastable high spin state at 25 K is
Structural characterization of a photoinduced molecular switch.
TLDR
The crystal structures in both irradiated and nonirradiated states of a photoinduced molecular switch based on the spin-crossover phenomenon are presented and the light-induced metastable high-spin state of thespin-c crossover complex [Fe(phen)2(NCS)2] (phen = 1,10-phenanthroline) shows significant differences.
The photo-induced commensurate modulated structure in site-selective spin crossover complex trans-[Fe(abpt)(2)(NCS)(2)].
TLDR
The structural findings suggest that the structural modulation and the site-selective LS → HS excitation are highly correlated.
.gamma.-Ray-induced linkage isomerization of tetrahedral thiocyanato complexes of iron(II)
Etude par spectres Mossbauer et IR des complexes M 2 [Fe(NCS) 4 ] et M 2 [FeCl 4 ] γ-irradies et non irradies a 78 K, (M=K + ,Et 4 N + ,Me 4 N + ). Existence de 2 types d'especes Fe(II) par
Successive dynamical steps of photoinduced switching of a molecular Fe(III) spin-crossover material by time-resolved x-ray diffraction.
TLDR
The time-resolved x-ray diffraction and optical results show that the dynamics span from subpicosecond local photoswitching followed by volume expansion (nanosecond) and thermal switching (microsecond).
Complete solid state photoisomerization of bis(dipyrazolylstyrylpyridine)iron(II) to change magnetic properties.
Iron(II) complexes of Z- and E-2,6-di(1H-pyrazol-1-yl)-4-styrylpyridine (Z-2 and E-2, respectively) exhibited visible light photoisomerization from Z-2 to E-2, both in solution and in solid phases.
Photoinduced linkage isomers of transition-metal nitrosyl compounds and related complexes.
TLDR
A review of the current knowledge in the still-developing field of light-induced changes in transition-metal nitrosyl complexes includes a discussion of photoinduced metastable linkage isomers of related substances.
The new photocrystallography.
  • P. Coppens
  • Chemistry, Physics
    Angewandte Chemie
  • 2009
Shine your light: Recent work in photocrystallography demonstrates a large photoinduced increase in the magnetic susceptibility of a solid, which is accompanied by significant changes in the bond
...
1
2
3
4
5
...