116668-54-3

Basic information

• Product Name: (Z)-2,2'-diaminostilbene
• Synonyms: (Z)-2,2'-diaminostilbene
• CAS NO: 116668-54-3
• Molecular Weight: 210.279
• Mol File: 116668-54-3.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (Z)-2,2'-diaminostilbene(CAS DataBase Reference)
• NIST Chemistry Reference: (Z)-2,2'-diaminostilbene(116668-54-3)
• EPA Substance Registry System: (Z)-2,2'-diaminostilbene(116668-54-3)

Safety Data

• Hazardous Substances Data: 116668-54-3(Hazardous Substances Data)

Upstream product

• 25407-11-8 1,2-bis(2-nitrophenyl)ethyne 
• 42467-39-0 2,2'-dinitrostilbene 
• 23308-83-0 (2-nitrobenzyl)triphenylphosphonium bromide 
• 552-89-6 2-nitro-benzaldehyde 

Downstream Products

• 31880-10-1 2.2'-bis-acetylamino-cis-stilbene 
• 31880-10-1 2.2'-bis-acetylamino-trans-stilbene 
• 28228-84-4 N,N'-bibenzyl-2,2'-diyl-bis-acetamide 
• 34124-14-6 2,2'-ethylenedianiline 

Relevant articles and documents

New models for the study of the racemization mechanism of carbodiimides. Synthesis and structure (X-ray crystallography and 1H NMR) of cyclic carbodiimides

The crystal and molecular structure of carbodiimides 2 (5,6,18,19-tetradehydro-5,12,13,18,25,26-hexahydrotetrabenzo[d,h,m,q][1,3,10,12] tetraazacyclooctadecine) and 3 (8,10,22,24-tetraazapentacyclo-[23.3.1.3,7.111,15.1 17,21]dotriaconta-1(29),3,5,7(32),8,9,11,13,15(31),17,19,21(30),22, 23,25,27-hexadecaene) have been determined. The activation barriers for the racemization of carbodiimides 1 (6,7-dihydrodibenzo[d,h][1,3]diazonine), 2, and 3 have been determined. While 1 presents a relatively high barrier (17.4 kcal mol-1), 2 and 3 have very low activation barriers (between 5 and 7 kcal mol-1). We tentatively conclude that open-chain and large-ring carbodiimides racemize by nitrogen inversion or trans-rotation while medium-size cyclic carbodiimides racemize by cis-rotation.