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Updated: Jul 19, 2026

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
A rare and highly oxidized Mo(2)5.5+ unit stabilized by oxo anions and supported by formamidinate bridges
F Albert Cotton1, Carlos A Murillo, Rongmin Yu
1Department of Chemistry and Laboratory for Molecular Structure and Bonding, P.O. Box 3012, Texas A&M University, College Station, Texas 77842-3012, USA. cotton@tamu.edu
Abstract:
A series of tetranuclear compounds consisting of two {Mo2[(m-CF3C6H4)NC(H)N(m-CF3C6H4)]3}n+ moieties linked by two OH- or two O2- ions has been characterized. Abbreviating the dimolybdenum plus three spectator bridging ligands as [Mo2], the following three compounds have been made-[Mo2](mu-OH)2[Mo2] (1), [Mo2](mu-O)2[Mo2] (2), and {[Mo2](mu-O)2[Mo2]}SbF6 (3). Compound 1, which is diamagnetic and contains quadruply bonded Mo2(4+) units, is converted to diamagnetic 2 by oxidation with O2. Compound 2, which has Mo2(5+) units, is oxidized by NOSbF6 to 3 which has a rare Mo2(5.5+) core and an odd electron delocalized over the two dimolybdenum units.
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