Synthesis and Structural Characterization of [Mn(ethyl isonicotinate)2(N3)2]n, a Two-Dimensional Alternating Ferromagnetic−Antiferromagnetic Compound. Magnetostructural Correlations for the End-to-End Pseudohalide−Manganese System
- 1 January 1996
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 35 (22) , 6386-6391
- https://doi.org/10.1021/ic9603464
Abstract
Three compounds with formula [Mn(L)2(N3)2]n, in which L is 4-acpy = 4-acetylpyridine (1), Etinc = ethyl isonicotinate (2), and py = pyridine (3), have been studied from the magnetic point of view. The new compound [Mn(L)2(N3)2]n (2) crystallizes in the monoclinic system, space group P21/a (No. 14), formula [C16H18MnN8O4], with a = 15.176(5) Å, b = 9.060(3) Å, c = 15.760(6) Å, β = 111.62(3)°, and Z = 4. Compounds 1 and 2 are two-dimensional systems, whereas 3 is a 3-D compound. Compound 2 shows ferromagnetic Mn2(N3)2 dimeric entities linked antiferromagnetically to the four neighboring dimeric entities by four end-to-end azido bridges, leading to an alternate ferromagnetic−antiferromagnetic two-dimensional compound. MO calculations have been performed to study the superexchange pathway for the manganese 1,3-azido system.Keywords
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