Supramolecular hybrids based on Ru(II) porphyrin and octahedral Mo(II) iodide cluster.

The coordination-driven design and synthesis of new stable supramolecular cluster-porphyrin (CP) hybrids based on an A-type ruthenium porphyrin 5,15-bis[(-tolyl)porphyrinato(2-)]ruthenium(carbonyl)(aqua) [RuDTolP(CO)H2O] and an octahedral molybdenum(II) iodide cluster with six terminal isonicotinate ligands (BuN)[{MoI}(OOC-CHN)] (PyMoC) are reported. The stepwise supramolecular assembly of the PyMoC "superoctahedron" with RuDTolP(CO)H2O has been studied by H NMR and 2D H-H COSY, H-N HMBC and DOSY techniques, as well as by UV-vis spectroscopy and HR-ESI mass spectrometry. The formation of discrete cluster-porphyrin CPn adducts with different numbers of coordinated porphyrins ( = 1-6), including the geometrical isomers of CP2, CP3 and CP4, has been observed.

Enhancement of photoactivity and cellular uptake of (BuN)[MoI(CHCOO)] complex by loading on porous MCM-41 support. Photodynamic studies as an anticancer agent.

The incorporation by ionic assembly of the hexanuclear molybdenum cluster (BuN)[MoI(CHCO)] (1) in amino-decorated mesoporous silica nanoparticles MCM-41, has yielded the new molybdenum-based hybrid photosensitizer 1@MCM-41. The new photoactive material presents a high porosity, due to the intrinsic high specific surface area of MCM-41 nanoparticles (989 m g) which is responsible for the good dispersion of the hexamolybdenum clusters on the nanoparticles surface, as observed by STEM analysis. The hybrid photosensitizer can generate efficiently singlet oxygen, which was demonstrated by using the benchmark photooxygenation reaction of 9,10-anthracenediyl-bis(methylene)dimalonic acid (ABDA) in water.

Paramagnetic Rhenium Iodide Cluster with N-Heterocyclic Carbene.

-Trirhenium nonaiodide ReI reacts with 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) to produce the novel 13-electron paramagnetic cluster ReI(IMes), which was characterized by means of X-ray diffraction analysis, ESR spectroscopy, magnetometry, and quantum chemistry.

Enhanced Photocatalytic Activity and Stability in Hydrogen Evolution of Mo Iodide Clusters Supported on Graphene Oxide.

Catalytic properties of the cluster compound (TBA)[MoI(OCCH)] (TBA = tetrabutylammonium) and a new hybrid material (TBA)MoI@GO (GO = graphene oxide) in water photoreduction into molecular hydrogen were investigated. New hybrid material (TBA)MoI@GO was prepared by coordinative immobilization of the (TBA)[MoI(OCCH)] onto GO sheets and characterized by spectroscopic, analytical, and morphological techniques. Liquid and, for the first time, gas phase conditions were chosen for catalytic experiments under UV-Vis irradiation.