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New Polymeric Manganese Azide Derivatives with Quinazoline

Morsy A. M. Abu-Youssef ; Albert Escuer ; Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi)
European Journal of Inorganic Chemistry (1434-1948 ). Vol. 2005 (2005), 22, p. 4659 - 4664.
[Artikel, refereegranskad vetenskaplig]

Two new polymeric derivatives of the (azido)MnII system with formula [Mn(H2O)(μ-N3)(N3)(quinaz)2]n (1) and [Mn(μ-N3)2(quinaz)2]n (2) (quinaz = quinazoline) have been structurally and magnetically characterised. Compound 1 crystallises in the triclinic system, space group P-1, and consists of 1D chains with single end-to-end azido bridges. These chains give a two-dimensional supramolecular arrangement by means of H-bond interactions. Compound 2 crystallises in the monoclinic system, space group C2/c, and contains a square alternating 2D network bridged by azido ligands in the end-to-end coordination mode. Compound 2 exhibits some unusual features, such as the unprecedented linear coordination of the azido bridge. Magnetic analysis reveals moderate antiferromagnetic coupling, with J values in good agreement with the expected range, as a function of the Mn-N-N bond angles.

Nyckelord: Azides, Coordination polymers, Magnetic properties, Manganese



Denna post skapades 2006-08-25.
CPL Pubid: 8603

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)

Ämnesområden

Kemi

Chalmers infrastruktur