Detail of "23355-64-8"

Reference

Dyeing-stable monoazo dye

Dyeing-stable monoazo dye. Kruse, Hubert; Sommer, Karl (Hoechst A.-G., Ger.). Ger. Offen. DE 2520577 18 Nov 1976, 11 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B067-00. APPLICATION: DE 75-2520577 9 May 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) The .beta. cryst. form of I [23355-64-8], stable under the conditions of high-temp. 23355-64-8 which is the cas registry number is also used here. dyeing, was obtained by heating an aq. suspension of the unstable .alpha.-form at 80.degree., by milling .alpha.-I at 80.degree. in the presence of dispersing agents, or by heating .alpha.-I in MeOCH2CH2OH at 80.degree.. .

X-ray crystal structure of C

All Rights Reserved. X-ray crystal structure of C.I. Disperse Brown 1. Seo, Joobeom; Jo, Won Joo; Choi, Green; Park, Ki-Min; Lee, Shim Sung; Lee, Jeong Sook (Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, S. Korea).Chemical with cas number 23355-64-8 also plays role. Dyes and Pigments, Volume Date 2007, 72(3), 327-330 (English) 2006 Elsevier Ltd. CODEN: DYPIDX. ISSN: 0143-7208. DOCUMENT TYPE: Journal CA Section: 75 (Crystallography and Liquid Crystals) Section cross-reference(s): 41 Crystals of C.I. Disperse Brown 1, an aminoazobenzene deriv., were grown from an EtOH soln. and the crystal structure was detd. by single crystal x-ray diffraction anal. The dye mol. crystallizes in the orthorhombic Fdd2 space group with a 30.6593(17), b 32.2928(18), c 7.3738(4) ?. The 4-nitro-4'-aminoazobenzene skeleton is nonplanar, with a dihedral angle of 45.53° between the Ph rings presumably to minimize the repulsive force between Cl atoms in each ring. Several types of intra- and intermol. H bonds, together with anti-parallel interlayer p-p stacking interaction also stabilize the mol. conformation. In particular, two aminoalc. chains form a pseudo-cycle by strong O-H×××O intramol. H bond. .