76282-33-2

Basic information

• Product Name: Tetraazatetramethyl-12-crown-4
• Synonyms: 1,4,7,10-Tetramethyl-1,4,7,10-tetraazacyclododecane;Tetraazatetramethyl-12-crown-4;1,4,7,10-tetramethyl-1,4,7,10-tetrazacyclododecane;1,4,7,10-Tetraazacyclododecane, 1,4,7,10-tetramethyl-
• CAS NO: 76282-33-2
• Molecular Formula: C₁₂H₂₈N₄
• Molecular Weight: 342.35428
• Mol File: 76282-33-2.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 281.6°C at 760 mmHg
• Flash Point: 109.1°C
• Appearance: /
• Density: 0.888g/cm³
• Vapor Pressure: 0.00354mmHg at 25°C
• Refractive Index: 1.456
• PKA: 8.61±0.20(Predicted)
• CAS DataBase Reference: Tetraazatetramethyl-12-crown-4(CAS DataBase Reference)
• NIST Chemistry Reference: Tetraazatetramethyl-12-crown-4(76282-33-2)
• EPA Substance Registry System: Tetraazatetramethyl-12-crown-4(76282-33-2)

Safety Data

• Hazardous Substances Data: 76282-33-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C12H28N4/c1-13-5-7-14(2)9-11-16(4)12-10-15(3)8-6-13/h5-12H2,1-4H3

Upstream product

• 50-00-0 formaldehyd 
• 294-90-6 1,4,7,10-tetraazacyclododecan 
• 112-24-3 triethylentetramine 

Relevant articles and documents

C-H activation by a diselenido dinickel(II) complex

Addition of selenium to the nickel(I) complex, [Ni(Me4[12] aneN4)(CO)]PF6, effects a redox reaction leading to the diselenido dinickel(II) complex, {[(Ni(Me4[12]aneN4)] 2(Se2)}(PF6)2, in 70% crystalline yield. The product's structure features a μ-η2: η2-Se2 ligand with Se-Se bond length of 2.379(13) A?. Upon mild heating, {[(Ni(Me4[12]aneN4)] 2(μ-η2:η2-Se2)}(PF 6)2 oxidizes 9,10-dihydroanthracene or 1,4-cyclohexadiene forming the terminal hydroselenide, [Ni(Me4[12]aneN 4)(SeH)]PF6, and anthracene or benzene, respectively. [Ni(Me4[12]aneN4)(SeH)]PF6 cleanly converts back to the diselenido dinickel(II) adduct upon addition of a phenoxy radical.

The Preparation, Characterization and Solution Chemistry of Some Nickel(II) and Copper(II) Complexes of 1,4,7,10-Tetramethyl-1,4,7,10-tetraazacyclododecane

The preparation of the new ligand 1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane, (-N(Me)(CH2)2-)4 (= L), and the complexes (ClO4)2, (ClO4)2, ClO4, (ClO4)2, and (ClO4)2, where Y = (-N(Me)(CH2)2N(Me)(CH2)3-)2, 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane, are described.The magnetic moments of the nickel(II) species are reported, and the labile low-spin/high-spin equilibria characterizing the 2+ and 2+ systems over a range of temperatures and ionic strengths in aqueous solution are discussed.The spectrophotometric titration of the aqua ligands in 2+, 2+, and 2+ against sodium hydroxide yields pKa values of 10.2+/-0.2, 12.0+/-0.3 and 10.7+/-0.2, respectively, and a study, using Job's method of continuous variations, of the formation of azide species shows + and + to be formed predominantly in aqueous solution.