Mixed-Valence Biferrocenium Salts of X-n-TCNQ (X = F, Cl; n=1, 2): Correlation between Molecular Structures and Assembled Structures

作者：Mochida Tomoyuki^*; Funasako Yusuke; Yamazaki Shizue; Mori Hatsumi

来源：European Journal of Inorganic Chemistry, 2014, 2014(24): 3920-3926.

DOI：10.1002/ejic.201400093

• Metallocenes
• Mixed-valence compounds
• Crystal engineering
• Magnetic properties

Charge-transfer salts composed of biferrocene derivatives and X-n-TCNQ (X = F, Cl; n = 1, 2; TCNQ = tetracyanoquinodimethane) were prepared and crystallographically characterized. All nine salts exhibited a 1: 2 donor/acceptor (D/A) ratio consisting of mixed-valence biferrocenium cations and anions with acceptor dimers. The packing patterns were correlated to the donor substituents. On the basis of the pi-pi interactions of the cations, the observed structures were classified into three categories: segregated-stack structures for the biferrocenium and dibromo-biferrocenium salts, mixed-stack structures [center dot center dot center dot(DA(2))n center dot center dot center dot] for the diiodo-biferrocenium salts, and intermediate structures [center dot center dot center dot(DDA(2)A(2))(n)center dot center dot center dot] for the bromo-biferrocenium salts.

• 出版日期2014-8