4-Hydroxy-<i>N</i>′-(3,5-dichloro-2-hydroxybenzylidene)benzohydrazide

Ren, Chong-Gui

doi:10.1107/s1600536809020820

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…572-573 K. UV-Vis (MeOH) max 213, 327 nm; FT-IR (KBr) (cm Table 2 Selected torsion angles ( ) and the dihedral angle ( ) between the terminal benzene rings. (Ren, 2009) 3,5-dichloro-2-hydroxyphenyl 12.3 178.7 À179.4 À7.3 5.1 ROFMOP (Xue et al, 2008) 3-bromo-5-chloro-2-hydroxyphenyl À2.3 175.9 À176.5 À1.3 3.0 TEWLAL (Ayyannan et al, 2016) 5-bromo-2-hydroxyphenyl À15.7 À173.6 168.9 3.1 27.0 WACVON (Shalash et al, 2010) 4 (Salhin et al, 2007) 2-hydroxyphenyl 18.8 179.5 178.7 3.3 21.7 ZAPKOS (Hou, 2012) 3-nitrophenyl À14.6 169.4 177.4 13.8 9.2 ZIPLAO (Prachumrat et al, 2018) 2,3-dimethoxyphenyl 9.6 À175.3 172.9 À1.3 9.3 Non-planar CABWUA (Meng et al, 2014) 2-hydroxy-5-methylphenyl 18.4 À178.5 À169.8 8.0 40.8 CEDBAQ (Subashini et al, 2012) 4-(diethylamino)phenyl 34.9 À178.5 À151.7 8.75 77.3 HUCVIL (Hao, 2009) 2-chlorophenyl À22.5 À179.2 177.4 À4.2 30.5 HUCWOS (Shi, 2009) 4-methoxyphenyl À50.9 À177.5 174.8 9.2 46.6 MOSPEQ (Qiu, 2009) 5-chloro-2-hydroxyphenyl 19.0 À178.5 À170.9 7.59 40.2 PAQJID (Gopal Reddy et al, 2017) 4-ethylphenyl À39.9 171.1 173.9 7.4 49.9 PAWVUG (Rassem et al, 2012a) 2…”

Section: Synthesis and Crystallizationmentioning

confidence: 99%

Crystal structure of (E)-N′-(3,4-dihydroxybenzylidene)-4-hydroxybenzohydrazide

et al. 2019

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In the title benzohydrazide derivative, C14H12N2O4, the azomethine C=N double bond has an E configuration. The hydrazide connecting bridge, (C=O)—(NH)—N=(CH), is nearly planar with C—C—N—N and C—N—N=C torsion angles of −177.33 (10) and −174.98 (12)°, respectively. The 4-hydroxyphenyl and 3,4-dihydroxyphenyl rings are slightly twisted, making a dihedral angle of 9.18 (6)°. In the crystal, molecules are connected by N—H...O and O—H...O hydrogen bonds into a three-dimensional network, while further consolidated via π–π interactions [centroid–centroid distances = 3.6480 (8) and 3.7607 (8) Å]. The conformation is compared to those of related benzylidene-4-hydroxybenzohydrazide derivatives.

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Section: Synthesis and Crystallizationmentioning

confidence: 99%

Crystal structure of (E)-N′-(3,4-dihydroxybenzylidene)-4-hydroxybenzohydrazide

et al. 2019

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“…et al, 2003;Charkoudian et al, 2007;Avaji et al, 2009;Kümmerle et al, 2009;Raparti et al, 2009;Bayrak et al, 2009;Hearn et al, 2009). In the last few years, crystal structures of a number of hydrazone compounds have been reported (Fun et al, 2008;Lo & Ng, 2009;Ren, 2009;Zhang, 2009). As a continuation of our work in this area (Liang & Zou, 2009), the author reports herein the crystal structure of the title new hydrazone compound.…”

Section: Data Collectionmentioning

confidence: 99%