Crystal structure of 2,2'-[(1,4-butylene)dioxybis(nitrilomethylidyne)]· dinaphthol, C26H24N2O4

2,2′-[(Butane-1,4-diyldioxy)bis(nitrilomethylidyne)]dinaphthalene

“…The molecule is disposed about a crystallographic centre of symmetry, and the molecule adopts an extended conformation where the two naphthaldoxime moieties are apart from each other. The oxime groups have the anti-conformation, which is similar to what is observed in our previously reported salen-type bisoxime of 2,2′-[(1,4-butylene)dioxybis(nitrilomethylidyne)]dinaphthol (Dong, Duan et al, 2006). Noteworthy is that the distance between the nearest naphthane rings, parallel to that of another molecule, is 3.141 (2) Å, revealing a strong intermolecular π-π stacking interaction as shown in…”

“…Related structures were reported by Dong, Duan et al (2006); ; Dong, Feng & Yang (2006); Duan et al (2007).…”

“…Hence, the title compound should be stable enough to resist the metathesis of the C=N bonds (Akine et al, 2001). In recent years, we have been very much interested in the chemistry of salen-type derivatives, such as 2,2′-[(1,4-butylene)dioxybis(nitrilomethylidyne)]dinaphthol (Dong, Duan et al, 2006) (Dong, Feng & Yang, 2006), and 2,2′-[(propane-1,3-diyldioxy)bis(nitrilomethylidyne)]diphenol (Duan et al, 2007). In this paper, a bisoxime ligand, 2,2′-[(1,4-butylene)dioxybis(nitrilomethylidyne)]dinaphthane was designed and synthesized, and shown in Fig.…”

2,2′-[1,1′-(Ethylenedioxydinitrilo)diethylidyne]diphenol

“…For related literature, see: Atwood & Harvey (2001); ; Dong, Feng & Yang (2006); Dong, Duan et al (2006); Dong et al (2007); Duan et al (2007); Katsuki (1995).…”

“…(2007 (N,N′-bis(salicylidence)ethylenediamine), salen, and its analogues have been extensively investigated for decades (Katsuki, 1995;Atwood & Harvey, 2001). At present, a new class of salen-type bisoxime compounds have been synthesized by using an O-alkyloxime unit (-CH=N-O-(CH) n -O-N=CH-) instead of the (-CH=N-(CH) n -N=CH-) group Dong, Feng & Yang, 2006;Dong, Duan et al, 2006;Duan et al, 2007) as the large electronegativity of oxygen atoms is expected to affect strongly the electronic properties of N 2 O 2 coordination sphere, which can lead to different and novel properties and structures of the resulting complexes.…”