“…This type of R 2 2 (10) synthon mediated by H α -bond acceptor interactions was observed in compounds (4-CNB-EDT-TTF)I 3 (5), (4-CNB-EDT-TTF)ClO 4 ( 6), (4-CNB-EDT-TTF)BF 4 (7), (5-CNB-EDT-TTF)FeBr 4 , ( 15), (5-CNB-EDT-TTF) 2 Cu 2 Cl 6 (16), and (5-CNB-EDT-TTF) 2 Hg 2 Br 6 (17). However, this synthon is rarely observed isolated and, as shown in Fig.…”