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Copper(I)-mediated quaternisation of 1,4-diazabicyclo[2.2.2]octane (DABCO). Crystal structure of bis (1-chloromethyl-4-aza-1-azoniabicyclo[2.2.2]octane)-μ-chloro-chlorocopper(I)

Björn Gustafsson (Institutionen för kemi- och bioteknik, Oorganisk kemi) ; Mikael Håkansson ; Susan Jagner (Institutionen för kemi- och bioteknik, Oorganisk kemi ; Institutionen för kemi)
Inorganica Chimica Acta Vol. 358 (2005), p. 1309-1312.
[Artikel, refereegranskad vetenskaplig]

Copper(I)-mediated quaternisation of 1,4-diazabicyclo[2.2.2]octane (DABCO) in dichloromethane solvent affords the dichloromethylated ligand, which has been isolated as the copper(I) complex bis (1-chloromethyl-4-aza-1-azoniabicyclo[2.2.2]octane)-μ-chloro-chlorocopper(I) . The crystal structure of the product, a discrete dimer [Cu2(μ-Cl)2Cl2(N(C2H4)3NCH2Cl)2], has been determined. A similar reaction in a mixture of diiodomethane and dichloromethane yields [C6H12N2(CH2I)]2(I3)I, the identity of which was also established by means of crystal-structure determination. The dimeric units of [Cu2(μ-Cl)2Cl2(N(C2H4)3NCH2Cl)2] are interconnected by short ClH interactions of 2.6 to form layers. This ClH interaction, which is the sole intermolecular contact of this magnitude, involves the terminal chloride bonded to copper(I).

Nyckelord: Copper(I), Chloride, Bromide, 1,4-Diazabicyclo[2.2.2]octane, Methylation, Dichloromethane, Diiodomethane, Hydrogen bond acceptors



Denna post skapades 2006-08-25. Senast ändrad 2012-08-20.
CPL Pubid: 3742

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk kemi (2005-2005)
Institutionen för kemi (2001-2011)

Ämnesområden

Kemi

Chalmers infrastruktur