Non-d.sup.0 rhenium(V) alkylidyne catalysts useful for catalyzing alkyne metathesis reactions, such as homo- and cross-metathesis of alkynes or diynes, ring closing metathesis and ring-opening metathesis, methods or use, and preparation thereof. The catalysts are stable to air and moisture and tolerate a variety of functional groups in substrates.

A method for forming a metal-containing film includes: a) providing at least one substrate; b) delivering to said substrate at least one compound of Formula 1 in the gaseous phase, (R.sup.1R.sup.2R.sup.3 (Si))—Co(CO).sub.4 (Formula 1), wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected lower alkyl groups; and c) simultaneously with or subsequently to step b), delivering to said substrate a co-reagent in the gaseous phase, the co-reagent being lower alcohol. Further, a method of selectively depositing a metal-containing film includes: a) providing at least two substrates comprising different materials, one of said at least two substrates has an affinity for Si and another of said at least two substrates has an affinity for CO; b) delivering to said substrates at least one compound of the Formula 1 in the gaseous phase; and c) simultaneously with or subsequently to step b), delivering to said at least two substrates at least one co-reagent in the gaseous phase.

A method for forming a metal-containing film includes: a) providing at least one substrate; b) delivering to said substrate at least one compound of Formula 1 in the gaseous phase, (R.sup.1R.sup.2R.sup.3 (Si))—Co(CO).sub.4 (Formula 1), wherein R.sup.1, R.sup.2 and R.sup.3 are independently selected lower alkyl groups; and c) simultaneously with or subsequently to step b), delivering to said substrate a co-reagent in the gaseous phase, the co-reagent being lower alcohol. Further, a method of selectively depositing a metal-containing film includes: a) providing at least two substrates comprising different materials, one of said at least two substrates has an affinity for Si and another of said at least two substrates has an affinity for CO; b) delivering to said substrates at least one compound of the Formula 1 in the gaseous phase; and c) simultaneously with or subsequently to step b), delivering to said at least two substrates at least one co-reagent in the gaseous phase.

Compounds are described and characterized that bind guanine quadruplexes of DNA or RNA. Binding data and inhibition of growth data of five cancer cell lines are presented.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

The present disclosure relates to improved processes for the preparation of metal hydrides. The present disclosure also relates to metal hydrides, e.g., metal hydrides prepared by the processes described herein, that exhibit enhanced hydrogen storage capacity when used as hydrogen storage systems.

A magnetic resonance imaging (MRI) contrast agent and a preparation method and a use thereof is provided, which belong to the technical field of Magnetic Resonance Imaging contrast agent. The MRI contrast agent is prepared by the compound having a structure of formula I; and it also may include the compound having a structure of formula II or a pharmaceutically acceptable salt thereof, wherein M.sub.1 is a divalent ion or a trivalent ion of a paramagnetic metal selected from Mn, Fe, Eu, or Dy; M.sub.2 is selected from Na.sup.+, K.sup.+ or meglumine cation; when M.sub.1 is a divalent ion, a is 2; when M.sub.1 is a trivalent ion, a is 3. The MRI contrast agent has good water solubility, high relaxivity, and low toxic and side effect.

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A pyrazole metal complex for absorption of carbon dioxide, a method for preparing the pyrazole metal complex, and a method for absorbing carbon dioxide are provided; wherein the product produced by reacting pyrazole metal complex and carbon dioxide may be transformed into several economically valuable compounds.

Compositions and methods for visualizing tissue under illumination with near-infrared radiation, including compounds comprising near-infrared, closed chain, sulfo-cyanine dyes and prostate specific membrane antigen ligands are disclosed.

Methods are provided for appending amines to metal organic framework (MOF) compositions. In some aspects, the methods can allow for appending of amines in the solution or synthesis solution used for synthesizing a MOF. In such aspects, an amine-appended MOF can be formed without having to first separate and dry the underlying non-amine-appended MOF composition. In other aspects, amines can be appended to an existing MOF composition by exposing the MOF to a suitable amine in a protic solvent, such as water or an alcohol.