Crystal structures of 1,1′-di(methylacetato)- and 1,1′-di(chloroethoxyethyl)-2,2′-biimidazole

3,3′-(2,2′-Bi-1H-imidazole-1,1′-diyl)dipropanol

“…1, adopts a trans conformation, and consists of half-molecule asymmetric units related by a twofold rotation. Exceptionally, unlike the other unconjugated 1,1′-disubstituted compounds reported before (Barnett et al, 1997(Barnett et al, , 2002Secondo et al, 1996Secondo et al, , 1996, the imidazole rings of the investigated compound (I) exhibit a rather large torsion angle of 51.27 4…”

“…For background to 2,2 0 -biimidazole derivatives, see: Forster et al (2004); Fortin & Beauchamp (2000); Fu et al (2007); Ion et al (2007); Mao et al (2003); Pereira et al (2006); Xiao & Shreeve (2005); Xiao et al (2004). For other unconjugated 1,1 0 -disubstituted compounds, see: Barnett et al (1997Barnett et al ( , 2002; Secondo et al (1996Secondo et al ( , 1997. For the synthesis, see: Barnett et al (1999) Experimental…”

1,1′-Di(hydrazinocarbonylmethyl)-2,2′-biimidazole monohydrate and 1,1′-di[2-(hydrazinocarbonyl)ethyl]-2,2′-biimidazole

“…Recently, a new class of 2,2 H -biimidazole compounds, viz. the 1,1 H -diester derivatives (Barnett, 1997;Barnett et al, 1996Barnett et al, , 1997Barnett et al, , 1999Secondo et al, 1996), has been developed. Ready acylation of primary amines or hydrazine with these diesters proceeds with excellent yields.…”

Syntheses and fluorescence of salicylaldimine schiff base derivatives of 1,1′‐di(aminoethylaminocarbonylalkyl)‐2,2′‐biimidazole

“…Acyclic derivatives of 2,2'-biimidazole have been shown to exhibit cardiotonic [11] and antiprotozoal properties [12]. Over the past few years, new 1,1'disubstituted-2,2'-biimidazole ester, amide-amine, and hydrazide macromolecules have been reported [13][14][15][16]. X-ray diffraction crystallography revealed these compounds assume a trans orientation in the crystalline state that may preclude single metal binding by both substituents.…”