Abstract

The crystal structures of several dinuclear complexes of manganese are reported, and the decomposition and analysis of the nanostructured products derived from them are presented. 1 4,7,10-Tetraazacyclododecane (cyclen) forms dinuclear complexes 1-4 containing doubly oxo-bridged or oxo-acetato bridging ligands depending on the manganese salt used for the reaction. Doubly oxo-bridged 1 crystallizes in the orthorhombic space group Pnma, a = 22.3850(14) Å, b = 9.1934(5) Å, c = 13.2424(10) Å, V = 2725.2(3) Å 3. 2, containing [Mn(SCN) 5] 3- conteranions, crystallizes in monoclinic space group |2/a with a = 18.2699(10) Å, b = 11.2384(6) Å, c = 18.6432(9) Å, α = 90.00°, β = 114.510(6)°, γ = 90.00°, V = 3483.0(3) Å 3. Oxo-acetato-bridged 3 crystallizes in orthorhombic space group Pca21, a = 13.9322(11) Å, b = 16.2332(13) Å, c = 14.6794(8) Å, V = 3320.0(4) Å 3. Compound 4 consists of a templated quasi-one-dimensional manganese oxalate crystallized in the triclinic space group P1, a = 9.5442(11) Å, b = 10.3758(10) Å, c = 21.851(2) Å, α = 83.720(12)°, β = 80.106(13)°, γ = 85.457(13)°, V = 2114.9(4) Å 3. Compounds 1, 3, and 4 decompose to nanostructured oxide materials, which may be isolated in bulk as lamellar-structured particles or microspheres or deposited on substrates. © 2008 American Chemical Society.