caa a22 4500 469059567 CHVBK 20180323132853.0 cr unu---uuuuu 170328e19920701xx s 000 0 eng 10.1007/BF01042780 doi (NATIONALLICENCE)springer-10.1007/BF01042780 Macrocycle complexation chemistry. 38. Crystallographic and ultraviolet/visible characterization of nitrobenzo-15-crown-5, dinitrobenzo-15-crown-5, and dinitrodibenzo-18-crown-6·2CH3CN [Elektronische Daten] [Robin Rogers, Rodger Henry, Andrew Rollins] The crystal structures of three nitrated benzocrown ethers have been determined. Nitrobenzo-15-crown-5 crystallizes in the orthorhombic space group,Pca21, witha = 15.367(2),b = 4.8499(8),c = 19.963(5)Å, andD calc = 1.40 g cm−3 forZ = 4. Dinitrobenzo-15-crown-5 crystallizes in the monoclinic space group,P21/n, witha = 11.716(2),b = 8.495(3),c = 17.441(5)Å,β = 108.40(2)° andD calc = 1.44 g cm−3 forZ = 4.Dinitrodibenzo-18-crown-6·2CH3CN ismonoclinic,P21/n,witha = 8.138(2),b = 20.435(9),c = 15.953(9)Å,β = 100.55(4)° andD calc = 1.36 g cm−3 forZ = 4. The nitro substituents are in the plane of the benzo ring except in the sterically congested dinitrobenzo-15crown-5. The observed crown ether conformations are similar to their substituted analogs. Kluwer Academic Publishers, 1992 Nitrobenzo-15-crown-5 nationallicence dinitrobenzo-15-crown-5 nationallicence dinitrodibenzo-18-crown-6 acetonitrile solvate nationallicence X-ray crystal structure nationallicence Rogers Robin Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut Henry Rodger Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut Rollins Andrew Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/3(1992-07-01), 219-232 0923-0750 13:3<219 1992 13 10847 https://doi.org/10.1007/BF01042780 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01042780 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rogers Robin Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut NATIONALLICENCE 700 1- Henry Rodger Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut NATIONALLICENCE 700 1- Rollins Andrew Department of Chemistry, Northern Illinois University, 60115, DeKalb, IL, USA aut NATIONALLICENCE 773 0- Journal of inclusion phenomena and molecular recognition in chemistry Kluwer Academic Publishers 13/3(1992-07-01), 219-232 0923-0750 13:3<219 1992 13 10847 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer