The X-ray Structures of 2,4-Dibromothiazole and 2,4-Diacetyl-5-bromothiazole
The X-ray Structures of 2,4-Dibromothiazole and 2,4-Diacetyl-5-bromothiazole
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2,4-二溴噻唑和2,4-二乙酰基-5-溴噻唑的X射线结构
DOI:
10.1007/s10870-015-0615-x
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发表时间:
2015
影响因子:
0.8
通讯作者:
Aitken K
中科院分区:
文献类型:
--
作者:
Aitken K
Abstract2,4-Dibromothiazole [orthorhombic, a = 6.700 (10), b = 16.21 (3), c = 5.516 (8) Å, space group Fmm2] shows a disordered crystal structure with molecules randomly oriented with respect to the direction of the Br–C(2)–N–C(2)–Br unit and the remaining ring atoms S(3) and C(3)H showing mixed occupancy. 2,4-Diacetyl-5-bromothiazole [triclinic, a = 4.040 (2), b = 8.254 (5), c = 13.208 (8) Å, α = 96.191 (17), β = 93.865 (16), γ = 94.067 (11)°, space group P-1] shows a structure dominated by halogen bonding, intramolecular between 4-COMe and 5-Br and intermolecular between 2-COMe of one molecule and 5-Br of the next.Graphical Abstract2,4-Dibromothiazole is disordered in the crystal structure with molecules randomly oriented either way round as shown. There is evidence for unusual intramolecular, and perhaps also intermolecular, halogen bonding between Br and C = O in the structure of 2,4-diacetyl-5-bromothiazole.
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DOI:
10.1073/pnas.0407607101
发表时间:
2004-11-30
影响因子:
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