首页> 美国卫生研究院文献>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures of 2-(4-nitro­phen­yl)-3-phenyl-23-di­hydro-4H-13-benzo­thia­zin-4-one and 2-(2-nitro­phen­yl)-3-phenyl-23-di­hydro-4H-13-benzo­thia­zin-4-one
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Crystal structures of 2-(4-nitro­phen­yl)-3-phenyl-23-di­hydro-4H-13-benzo­thia­zin-4-one and 2-(2-nitro­phen­yl)-3-phenyl-23-di­hydro-4H-13-benzo­thia­zin-4-one

机译:2-(4-硝基苯基)-3-苯基-23-二氢-4H-13-苯并噻嗪-4-酮和2-(2-硝基苯基)-3-苯基-23-二氢的晶体结构-4H-13-苯并噻嗪-4-酮

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摘要

The crystal structures are reported of the isomeric compounds 2-(4-nitro­phen­yl)-3-phenyl-2,3-di­hydro-4H-1,3-benzo­thia­zin-4-one, (I), and 2-(2-nitro­phen­yl)-3-phenyl-2,3-di­hydro-4H-1,3-benzo­thia­zin-4-one, (II), both C20H14N2O3S, being the para-nitro and ortho-nitro forms, respectively, the meta-form of which is known [Yennawar et al. (2013). Acta Cryst. E>69, o1679]. The six-membered thia­zone ring fused with a benzene ring displays a screw-boat conformation with a total puckering amplitude of 0.627 (1) Å in (I), and a near screw-boat conformation with a total puckering amplitude of 0.600 (1) Å in (II). The dihedral angles between the planes of the substituent nitrophenyl and phenyl and rings with the benzene ring of the parent benzo­thia­zone moiety are 75.93 (5) and 82.61 (5)° [in (I)], and 76.79 (6) and 71.66 (6)° [in (II)]. Weak inter­molecular C—H⋯O hydrogen-bonding inter­actions between aromatic H-atom donors and both a nitro-O atom and a thia­zone O-atom acceptor in (I) and a thia­zone O atom in (II) are present, forming in (I) a centrosymmetric 22-membered cyclic dimer which is extended through a similar inversion-related 14-membered cyclic hydrogen-bonding association into a zigzag chain structure extending along c. In (II), a single inter­molecular C—H⋯O hydrogen bond gives a chain structure extending along b. In addition, weak C—H⋯π inter­actions are present in both structures [minimum C⋯ring-centroid separations = 3.630 (2) and 3.581 (2) Å, respectively].
机译:报告了异构体化合物2-(4-硝基苯基)-3-苯基-2,3-二氢-4H-1,3-苯并噻嗪-4-酮,(I)和2-(2-硝基苯基)的晶体结构)-3-苯基-2,3-二氢-4H-1,3-苯并噻嗪-4-酮(II),两者均为C20H14N2O3S,分别为对硝基和邻硝基形式,其间位形式是众所周知的[Yennawar等。 (2013)。 Acta Cryst。 E > 69 ,o1679)。六元硫环与苯环稠合,在(I)中显示的螺旋舟构型的总起皱幅度为0.627(1)Å,在近螺旋舟的构型中的总起皱幅度为0.600(1) (II)中的Å。取代基硝基苯基和苯基的平面以及与母体苯并硫氮zone部分的苯环的环之间的二面角为[在(I)中]为75.93(5)和82.61(5)°,在[I]中为76.79(6)和71.66(6) )°[在(II)中。 (I)中存在芳族H原子供体与硝基-O原子和硫zone O原子接受体之间的弱分子间C-HiaO氢键相互作用,而在(II)中存在, I)中心对称的22元环状二聚体,其通过相似的与反转相关的14元环状氢键结合而延伸成沿c延伸的Z字形链结构。在(II)中,单个分子间CHHO氢键给出了沿b延伸的链结构。此外,两种结构中均存在弱的CH⋯π相互作用[最小C⋯ring-质心间距分别为3.630(2)和3.581(2)Å]。

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