1,4-Bis(4-aminophenoxy)butane

Abstract

Key indicators: single-crystal X-ray study; T = 173 K; mean (C-C) = 0.001 Å; R factor = 0.036; wR factor = 0.099; data-to-parameter ratio = 20.5.Molecules of the title compound, C 16 H 20 N 2 O 2 , reside across crystallographic centres of inversion with one half-molecule in the asymmetric unit. The bond lengths and angles are normal and the crystal packing is stabilized by N-HÁ Á ÁN and N-HÁ Á ÁO hydrogen bonds. Experimental Crystal dataC 16 H 20 N 2 O 2 M r = 272.34 Orthorhombic, Pbca a = 5.2638 (4) Å b = 13.6385 (8) Å c = 20.4415 (11) Å V = 1467.50 (16) Å 3 Z = 4 Mo K radiation = 0.08 mm À1 T = 173 (2) K 0.42 Â 0.39 Â 0.27 mm Data collectionStoe IPDS II two-circle diffractometer Absorption correction: none 18475 measured reflections 2051 independent reflections 1847 reflections with I > 2(I) R int = 0.043

Study on the preparation and properties of novel block copolymeric materials based on structurally modified organometallic as well as organic polyamides and polydimethylsiloxane

“…The synthesis of all the dinitro precursors and resulting diamine monomers was confirmed by their melting points, elemental analysis and spectroscopic studies. The crystal structures of some of these products analysed by single crystal X‐ray crystallography are reported already …”