847975-78-4Relevant articles and documents
Synthesis, crystal structure, and magnetic properties of binuclear Mn III-azido and 1D polymeric MnII-μ1,3- thiocyanato novel species based on a neutral hexadentate Schiff base
Deoghoria, Soma,Bera, Sujit K.,Moulton, Brian,Zaworotko, Michael J.,Tuchagues, Jean-Pierre,Mostafa, Golam,Lu, Tian-Huey,Chandra, Swapan K.
, p. 343 - 350 (2005)
A binuclear manganese(III) complex [Mn2(L1)(N 3)6] (2) and an unprecedented 1D chain of manganese(II) binuclear units bridged by two end-to-end thiocyanato anions {[Mn2II(L1)(NCS)4]·2CH3CN}n (3 ? 2CH3CN) have been prepared from N-(1-pyridin-2-ylbenzylidene)-N′-[2-({2-[(1-pyridin-2- ylbenzylidene)amino]ethyl}amino)ethyl]ethane-1,2-diamine (L), manganese(II) salts and azide/thiocyanate anions in air. L1, N-(1-pyridin-2- ylbenzylidene)-N-[2-(4-{2-[(1-pyridin-2-ylbenzylidene)amino]ethyl} piperazin-1-yl)ethyl]amine, results from an alkylating cyclization of the flexible hexadentate Schiff base L occurring along the course of the complexation reactions. Both complexes have been characterized by single crystal X-ray diffraction studies. The Mn centres of complexes 2 and 3 are in distorted octahedral (2: MnIIIN6, 3: MnIIN5S) coordination environments with intramolecular Mn?Mn distance (2: 6.473(2) A?, 3: 6.437(1) A?) consistent with the absence of intramolecular magnetic interactions. Compound 3, exhibits weak intermolecular antiferromagnetic interactions (J = -1.5 cm-1) between pairs of MnII ions bridged via two μ1,3-NCS.