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@article{SCNABU16,
 abstract = {Five new spin crossover complexes with 4- and 5-(phenylazo)-2,2-bipyridine (4-/5-PAbipy) ligands were synthesized and investigated with respect to their spin crossover (SCO) behavior. The results are compared to the thermal and lightinduced spin transition properties of the parent SCO complexes [Fe(bpz)2(bipy)] (1) and [Fe(bipy)2(NCS)2](2). [Fe(bpz)2(4-PAbipy)] (1a) undergoes a stepwise spin transition whereas [Fe(bpz)2(5-PAbipy)] (1b) exhibits a one-step transition with a 6 K-wide hysteresis. For [Fe(bpz)2(tBu5-PAbipy)] (1c) the spin transition to the low-spin state is incomplete. Qualitatively similar changes of the SCO behavior are observed for the complexes [Fe(4-PAbipy)2(NCS)2](2a) and [Fe(5-PAbipy)2(NCS)2](2b). In comparison to the parent system 2, a strengthening of intermolecular interactions leads to a stabilization of the low-spin state. Evidence for the LIESST behavior could be obtained for all new compounds by means of magnetic susceptibility measurements as well as UV/Vis and resonance Raman spectroscopy.},
 author = {Schmidt, Sven Olaf and Naggert, Holger and Buchholz, Axel and Brandenburg, Hannah and Bannwarth, Alexander and Plass, Winfried and Tuczek, Felix},
 year = {2016},
 title = {Thermal and Light-Induced Spin Transitions of Fe II Complexes with 4- and 5-(Phenylazo)-2,2$\prime$-bipyridine Ligands: Intra- vs. Intermolecular Effects},
 pages = {2175--2186},
 volume = {2016},
 number = {13-14},
 issn = {1434-1948},
 journal = {European Journal of Inorganic Chemistry},
 doi = {10.1002/ejic.201501252}
}