Neutral Molecular Iron(II) Complexes Showing Tunable Bistability at Above, Below, and Just Room Temperature by a Crystal Engineering Approach: Ligand Mobility into a Three-Dimensional Flexible Supramolecular Network
作者:Hiroaki Hagiwara、Takuya Masuda、Takuya Ohno、Mika Suzuki、Taro Udagawa、Kei-ichiro Murai
DOI:10.1021/acs.cgd.7b01141
日期:2017.11.1
solvent-free compounds [FeII(ptm2-dmpn)(NCS)2] (1; ptm2-dmpn = N,N′-bis[(1-phenyl-1H-1,2,3-triazol-4-yl)methylene]-2,2-dimethylpropane-1,3-diamine) and [FeII(p-ttm2-dmpn)(NCS)2] (2; p-ttm2-dmpn = N,N′-bis[(1-p-tolyl-1H-1,2,3-triazol-4-yl)methylene]-2,2-dimethylpropane-1,3-diamine), and two solvatomorphs [FeII(p-ttm2-etpn)(NCS)2]·solvent (p-ttm2-etpn = N,N′-bis[(1-p-tolyl-1H-1,2,3-triazol-4-yl)methylene]-1-ethylpropane-1
室温(RT)双稳态开关材料继续使科学家着迷,因为它们可用于新型的基于分子的开关或存储器。尽管自旋交联(SCO)化合物被归类为这些有吸引力的材料,但以合理的方式设计显示出理想的双稳性(即跨越RT的宽磁滞回线)的SCO系统仍然是一个非常具有挑战性的问题。我们在此报告了一个新的中性分子铁(II)络合物新家族,它们在跨越RT的宽转换温度(239-409 K)和迟滞宽度(1-31 K)中显示出迟滞SCO。这些材料以两种无溶剂化合物[Fe II(ptm 2 -dmpn)(NCS)2 ](1 ; ptm 2-dmpn = N,N'-双[((1-苯基-1 H -1,2,3-三唑-4-基)亚甲基] -2,2-二甲基丙烷-1,3-二胺)和[Fe II( p-ttm 2 -dmpn)(NCS)2 ](2 ; p-ttm 2 -dmpn = N,N'-双[(1- p -tolyl-1 H -1,2,3-三唑-4-基)亚甲基]