1,2,4,5-Tetrafluoro-3,6-diiodobenzene–2,3-bis(pyridin-2-yl)pyrazine (1/1)
نویسندگان
چکیده
The components of the title 1:1 co-crystal, C(14)H(10)N(4)·C(6)F(4)I(2), are connected via an N⋯I [2.959 (4) Å] halogen bond, in which the N atom is part of the relatively electron-rich pyrazine ring. The C(6)F(4)I(2) mol-ecule is almost planar [r.m.s. deviation = 0.038 Å] but there are significant twists in the pyrazine derivative, as seen in the dihedral angles [31.3 (2) and 54.6 (2)°] formed between the pendant pyridyl rings and the central pyrazine ring. The bimolecular aggregates are sustained in the crystal by C-H⋯F and π-π inter-actions [ring centroid(pyrid-yl)-ring centroid(benzene) = 3.678 (3) Å].
منابع مشابه
1,2,4,5-Tetrafluoro-3,6-diiodobenzene–4-(pyridin-4-ylsulfanyl)pyridine (1/1)
The asymmetric unit of the title 1:1 adduct, C(10)H(8)N(2)S·C(6)F(4)I(2), comprises a half-mol-ecule of 1,2,4,5-tetra-fluoro-3,6-diiodo-benzene, and half a 4-(pyridin-4-ylsulfan-yl)pyridine mol-ecule. The former is completed by crystallographic inversion symmetry, the latter by twofold symmetry, with the S atom lying on the rotation axis. The almost planar 1,2,4,5-tetra-fluoro-3,6-diiodo-benzen...
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عنوان ژورنال:
دوره 66 شماره
صفحات -
تاریخ انتشار 2010