Synthesis and structural analysis of Bis(2-hydroxyphenyl) phenylamine, PhN(o-C6H4OH)2: Comparison with Tris(2-hydroxyphenyl)amine N(o-C6H4OH)3

Multidentate aryloxide and oxo-aryloxide complexes of antimony: synthesis and structural characterization of [η4-N(o-C6H4O)3]Sb(OSMe2), {{[η3-N(o-C6H4OH)(o-C6H4O)2]Sb}2(µ2-O)}2 and {[η3-PhN(o-C6H4O)2]Sb}4(µ3-O)2

“…IR spectra were recorded as Nujol mulls on KBr plates on a Perkin-Elmer Paragon 1000 spectrometer. N(o-C 6 H 4 OH) 3 14 and PhN(o-C 6 H 4 OH) 2 25 were prepared by the literature methods. Sb(OEt) 3 was obtained from Strem.…”

Synthesis and structural characterization of tris(phenolate)amine complexes of antimony derived from

“…While the greater flexibility enabled by the longer linker between the N and O donors is one factor which may contribute to the shorter Sb-N bond length for ½j 4 -NðCH 2 -Ar Bu t 2 OÞ 3 SbðOSMe 2 Þ, a comparison of the molecular structures of the parent phenols N(o-C 6 H 4 OH) 3 [19] and NðCH 2 Ar Bu t 2 OHÞ 3 indicates that the geometry of the nitrogen in the latter is much more pyramidal than that in the former [20]. As such, the ½NðCH 2 Ar Bu t 2 OÞ 3 ligand is expected Scheme 1. to show a greater predilection to forming a dative bond and thereby reduce the Lewis acidity of the antimony center.…”

Towards an understanding of structure-nonlinearity relationships in triarylamine-based push-pull electro-optic chromophores: the influence of substituent and molecular conformation on molecular hyperpolarizabilities

“…For chromophore 15, the two methoxy groups adopt a "trans" geometry, that is, the two methoxy groups are located on different sides of the NCCC plane (Fig. 36 The hyperpolarizability of "trans" chromophore 15 (b 1907 ¼ 172 Â 10 À30 ) exceeds that of "cis" chromophore 16 (b 1907 ¼ 159 Â 10 À30 ) due to the difference in molecular conformation. For chromophore 16, the two methoxy groups adopt a "cis" geometry, that is, the two methoxy groups are located on the same side of the central NCCC plane (Fig.…”

“…[34][35][36] Secondly, the structure of the central NCCC moiety is planar or near planar. 35,36 Thirdly, the three phenyl rings are symmetrically twisted from the central NCCC plane and present a compromised structure between two opposing forces. 1(I)) Introduction of one or multiple substituent groups in the different positions of the phenyl ring does not inuence the planar conformation of the central NCCC moiety signicantly.…”

“…35,36 Thirdly, the three phenyl rings are symmetrically twisted from the central NCCC plane and present a compromised structure between two opposing forces. 36 The observed structure of dimethoxy ortho-substituted TAA shows the unsubstituted phenyl ring lies close to the central trigonal plane, while the other two substituted phenyl rings are almost orthogonal to the central reference plane (Fig. 30 Each phenyl ring forms a certain torsion angle with the central reference plane.…”