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@ARTICLE{VelazquezGarcia:482965,
      author       = {Velazquez Garcia, Jose and Basuroy, Krishnayan and
                      Storozhuk, Darina and Wong, Joanne and Demeshko, Serhiy and
                      Meyer, Franc and Henning, Robert and Techert, Simone},
      title        = {{S}hort- vs {L}ong-range {E}lastic {D}istortion:
                      {S}tructural {D}ynamics of a [2x2] {T}etrairon({II}) {S}pin
                      {C}rossover {G}rid {C}omplex {O}bserved by {T}ime-{R}esolved
                      {X}-{R}ay {C}rystallography},
      journal      = {Dalton transactions},
      volume       = {51},
      number       = {46},
      issn         = {0300-9246},
      address      = {London},
      publisher    = {Soc.},
      reportid     = {PUBDB-2022-05040},
      pages        = {17558 - 17566},
      year         = {2022},
      abstract     = {Spin crossover complexes (SCO) are among the most studied
                      molecular switches due to their potential use in displays,
                      sensors, actuators and memory components. A prerequisite to
                      using these materials is the understanding of the structural
                      changes following the spin transition at out-of-equilibrium
                      conditions. So far, out-of-equilibrium studies in SCO solids
                      have been focused on mononuclear complexes, though a growing
                      number of oligonuclear SCO complexes showing cooperative
                      effects are being reported. Here, we use time-resolved pink
                      Laue crystallography to study the out-of-equilibrium
                      dynamics of a [2 × 2] tetranuclear metallogrid of the form
                      [Fe II4 LMe4](BF4)4·2MeCN ([LMe]− =
                      4-methyl-3,5-bis{6-(2,2′-bipyridyl)}pyrazolate). The
                      out-of-equilibrium spin state switching induced by a ps
                      laser pulse demonstrates that the metallogrid exhibits a
                      multi-step response similar to that reported for mononuclear
                      complexes. Contrary to the mononuclear complexes, the
                      metallogrid shows two types of elastic distortions at
                      different time scales. The first is a short-range distortion
                      that propagates over the entire Fe4 grid complex during the
                      ps time scale, and it is caused by the rearrangement of the
                      coordination sphere of the photo-switching ion and the
                      constant feedback between strongly linked metal ions. The
                      second is a long-range distortion caused by the anisotropic
                      expansion of the lattice during the ns time scale, observed
                      in mononuclear materials. The structural analysis
                      demonstrates that the long-range prevails over the
                      short-range distortion, inducing the largest deformation of
                      both the entire grid and the coordination sphere of each
                      metal ion. The present study sheds light on the out-of
                      -equilibrium dynamics of a non-cooperative oligonuclear
                      complex.},
      cin          = {FS-SCS},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-SCS-20131031},
      pnm          = {633 - Life Sciences – Building Blocks of Life: Structure
                      and Function (POF4-633) / 6G3 - PETRA III (DESY) (POF4-6G3)
                      / SFB 1073 C02 - In-situ hochauflösende Untersuchung des
                      aktiven Zustands bei der (photo-) elektrochemischen
                      Wasserspaltung (C02) (240172646) / SFB 1073 B06 -
                      Echtzeituntersuchungen der optischen Anregung in
                      oligonuklearen Metallkomplexen mit schaltbaren Spin- und
                      Ladungszuständen (B06) (240171831)},
      pid          = {G:(DE-HGF)POF4-633 / G:(DE-HGF)POF4-6G3 /
                      G:(GEPRIS)240172646 / G:(GEPRIS)240171831},
      experiment   = {EXP:(DE-MLZ)External-20140101 /
                      EXP:(DE-H253)P-P11-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:36315244},
      UT           = {WOS:000877125300001},
      doi          = {10.1039/d2dt02638d},
      url          = {https://bib-pubdb1.desy.de/record/482965},
}