Halogen-Bonded Supramolecular Parallelograms: From Self-Complementary Iodoalkyne Halogen-Bonded Dimers to 1:1 and 2:2 Iodoalkyne Halogen-Bonded Cocrystals
作者:Eric Bosch、Erin Speetzen、Nathan P. Bowling
DOI:10.1021/acs.cgd.3c01325
日期:2024.2.21
structures of four iodoalkynyl-substituted (phenylethynyl)pyridines demonstrate the feasibility of discrete self-complementary dimer formation. These compounds 3-(2-iodoethynyl-phenylethynyl) pyridine (1), 2-(3-iodoethynyl-phenylethynyl) pyridine (2), 3-(4,5-difluoro-2-iodoethynyl-phenylethynyl) pyridine (3), and 2-(5-iodoethynyl-2,4-dimethylphenylethynyl) pyridine (4) all form parallelogram-shaped dimers
描述了利用碘炔烃-吡啶卤素键形成的超分子平行四边形。四种碘炔基取代(苯炔基)吡啶的晶体结构证明了离散自互补二聚体形成的可行性。这些化合物 3-(2-碘乙炔基-苯乙炔基)吡啶 (1)、2-(3-碘乙炔基-苯乙炔基) 吡啶 (2)、3-(4,5-二氟-2-碘乙炔基-苯乙炔基) 吡啶 (3) 和 2-(5-碘乙炔基-2,4-二甲基苯乙炔基) 吡啶 (4) 均形成平行四边形二聚体,具有两个自互补的短 N-I 卤素键。由双碘炔烃、1-碘乙炔基-2-(3-碘乙炔基-苯乙炔基)-4,5-二甲氧基苯 (6) 和二吡啶基 5-苯基-2-(吡啶-3-基乙炔基)吡啶 (7) 形成的 1:1 共晶中形成离散的卤素键合四边形复合物,证明了碘炔基卤素键超分子大环的潜在形成。此外,在 1,2-双(碘乙炔基)-4,5-二氟苯和二吡啶基 4-(3-吡啶乙炔基)吡啶之间形成的 2:2 共晶中形成离散的超分子平行四边形 (8)。