title: Solvothermal synthesis and characterization of two high-nuclearity mixed-valent manganese phosphonate clusters.
abstract: Two novel mixed-valent manganese (Mn(II)/Mn(III)) cluster compounds were synthesized in solvothermal reactions and characterized by single-crystal X-ray diffraction, bond valence sum calculations, IR spectra, elemental analysis, and magnetic measurements. Compound 1 is a Mn 19 cluster with a cylindrical core structure. Compound 2 possess a Mn 16 core where all of the manganese sites have unique ligation environments. The magnetic measurements on both compounds indicate dominant antiferromagnetic interactions between the metal centers.
authors: Department of Chemistry, Texas A&M University, College Station, TX 77843, USA. skonar@mail.chem.tamu.edu
authors: Sanjit
authors: S
authors: Konar
authors: Abraham
authors: A
authors: Clearfield