136237-57-5

Basic information

• Product Name: Br₂(CH₃CH₂)B₃N₃H₃
• CAS NO: 136237-57-5
• Molecular Weight: 266.347
• Mol File: 136237-57-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Br₂(CH₃CH₂)B₃N₃H₃(CAS DataBase Reference)
• NIST Chemistry Reference: Br₂(CH₃CH₂)B₃N₃H₃(136237-57-5)
• EPA Substance Registry System: Br₂(CH₃CH₂)B₃N₃H₃(136237-57-5)

Safety Data

• Hazardous Substances Data: 136237-57-5(Hazardous Substances Data)

Upstream product

• 7443-22-3 2,4,6-triethyl-borazine 
• 10294-33-4 boron tribromide 

Relevant articles and documents

Preparation of unsymmetrically B-substituted borazines and characterization of tris(4,6-diethylborazin-2-yl)amine

Symmetrically substituted B,B′,B″-triorganylborazines, (RBNR′)3, react with an equimolar quantity of boron trihalide, BX3 (X = Cl, Br), to form B-monohaloborazines, XR2B2N3R3, as well as RBX2, and with 2 molar equiv of BX3 to form the B,B′-dihaloborazines, X2RB3N3R′3. The compounds are obtained in good yield and purity, and are easily converted to other unsymmetrically B-substituted borazines. The borazines X(CH3)2B3N3(CH3) 3 (X = SCH3, NH2, C4H9, N[Si(CH3)2]), X(C2H5)2B3N3H3 (X = Br, SCH3), Cl(C2H5)2B3N3(CH 3)3, X2(C2H5)2B3N 3H3 (X = Br, SCH3), Cl(C6H5)2B3N3H 3, and Cl2(C2H5)B3N3(CH 3)3 have been prepared and characterized. The compound (H2N)(C2H5)2B3N 3H3 could not be obtained in the pure state; instead, it slowly condenses (even at room temperature) with the formation of the bis(borazin-2-yl)amine HN[(C2H5)2B3N3H 3]2 and the tris(borazin-2-yl)amine N[(C2H5)2B3N3H 3]3. The borazine (H2N)(CH3)2B3N3(CH 3)3 condenses at temperatures from 250 to 270°C to give HN [(CH3)2B3N3(CH3) 3]2. Reaction of this bis(borazin-2-yl)amine with LiC4H9 yields (C4H9)(CH3)2B3N 3(CH3)3 and (NHLi)(CH3)2B3N3(CH 3)3; the latter then reacts with Cl(CH3)2B3N3(CH3) 3 to regenerate HN[(CH3)2B3N3(CH3) 3]2. The unsymmetricaliy N-substituted borazine (C2H5)3B3N3H 2[Si(CH3)3] has been isolated and characterized.