Multiply Bonded Dimolybdenum Cation Immobilized in Mesoporous Silica: XAFS Analysis and Catalytic Activity in Cyclopentadiene Polymerization

Nitrile Ligated Transition Metal Complexes with Weakly Coordinating Counteranions and Their Catalytic Applications

“…For the anchoring of transition metal complexes to inorganic (silica or alumina) supports, several possibilities seem to be feasible . Direct grafting by substitution of a metal-bonded nitrile group by a surface-bound hydroxyl group leads to a reduction of the Lewis acidity of the metal by the formation of an −O−M bond and the loss of HA, where A is one of the counterions of the former transition metal cation . The disadvantage of the reduction of the metal charge is that there is usually an associated pronounced activity loss .…”

An Overview of Zeolite, Zeotype and Mesoporous Solids Chemistry: Design, Synthesis and Catalytic Properties

“…[88] Some recent examples of MCM-41 based materials are the Sn(IV) Lewis acids by Corma et al, [94] vanadium-containing species by Singh et al, [95,96] and a luminescent europium complex by Fernandes et al [97] Rhodium and molybdenum complexes have been given attention by Pillinger et al in analogous procedures, whereby bimetallic acetonitrile complexes have been grafted onto MCM-41. [98,99] These complexes have been shown to be sensitive to air, undergoing dissociation to create a mononuclear species in the case of Rh.…”

Tunability of Fluorescence Property of a Terbium‐Complex‐Containing Polymer via Incorporation of a Transition‐Metal Complex

“…[17] These 3d metals, in particular Fe, Mn, and Ni, are strong itinerant electron ferromagnets, whereas the lanthanides have localized 4f moments with high anisotropic energy. [17][18][19][20] Thus, the materials with both rare-earth complex and transition-metal complex have a combination of d-and f-elements, which are of fundamental interest in solid-state chemistry and materials science. [16,[21][22][23] In addition, d-element cations can be doped with luminescent compounds to produce materials with modified luminescent and magnetic properties.…”

“…The transition metals, which can impart unique electrical and optical properties to polymers,13–16 may help to realize the tunability 17. These 3d metals, in particular Fe, Mn, and Ni, are strong itinerant electron ferromagnets, whereas the lanthanides have localized 4f moments with high anisotropic energy 17–20. Thus, the materials with both rare‐earth complex and transition‐metal complex have a combination of d‐ and f‐elements, which are of fundamental interest in solid‐state chemistry and materials science 16,21–23.…”