| Abstract
| - Two azido-bridged Mn(II) coordination polymers with bidentate coligands have been shown to consist of (6,3) layers in which double end-on (EO) azido-bridged dimers are interlinked by single end-to-end (EE) azido bridges. The complexes exhibit spin canting, with or without long-range ordering of the residual spins.
- Two two-dimensional azido-bridged Mn(II) coordination polymers with bidentate coligandshave been synthesized and structurally characterized, and their magnetic properties werestudied. The complexes are of formula [Mn(bphz)(N3)2]n (1) and [Mn(mipc)(N3)2]n (2), wherebphz = 2-benzoylpyridine hydrazone and mipc = methyl imidopyrazinecarboxylate. Bothcomplexes consist of (6,3) layers in which double end-on (EO) azido-bridged dimers areinterlinked by single end-to-end (EE) azido bridges, representing new examples of the sparse2D Mn(II)-azido polymers assisted by bidentate coligands. Magnetic studies on the complexesreveal that ferromagnetic and antiferromagnetic interactions are mediated through the EOand EE azido bridges, respectively, with the global effect being antiferromagnetic. Bothcomplexes exhibit spin canting related to the lack of inversion centers between the EE azido-bridged Mn(II) ions. Complex 1 behaves as a weak ferromagnet below 20 K, due to the long-range ordering of the residual spins originating from spin canting, but long-range orderingof the residual spins is not achieved in complex 2.
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