Massachusetts Institute of Technology

Christopher Colin Cummins

Catalina E Laplaza

Khetpakorn Chakarawet

Yanfeng Jiang

Julia Stauber

James M Blackwell

Daniel G Nocera

Shiyu Zhang

Michael Bailey Geeson

Pablo Rios Moreno

Matthew Jordan Nava

Ioana Aron

Wesley Transue

Scott Shepard

Michael Baily Geeson

Preparation of phosphorus fine chemicals from phosphate sources is described.

Method for producing phosphorus chemicals from wet process phosphate

Preparation of sulfur fine chemicals from sulfur sources is described.

Method for producing trichlorosilylsulfide anion and its use in the preparation of organosulfur compounds

A phosphate ester compound can include a cation and an anion, the anion being an alkyl phosphate. The phosphate ester compound can be a phosphate ester ionic liquid. The phosphate ester compound can be manufactured in a solvent-free environment. The phosphate ester compound can be used as an electrolyte in a battery, for example, a lithium-ion battery.

Flame-retardant, non-toxic phosphate ester ionic liquid electrolytes and method of making

Metaphosphate compounds can directly phosphorylate other compounds to provide easy synthetic access to phosphorylated compounds, including cyclic phosphate compounds.

Synthesis of polyphosphorylated molecules from polyphosphates

Dihydrogen metaphosphate can be synthesized via protonation, and can react with a dehydrating agent to afford tetrametaphosphate anhydride. A monohydrogen tetrametaphosphate organic ester can be derived from the anhydride. A metal tetrametaphosphate complex can be prepared using a metal salt and a dihydrogen tetrametaphosphate.

Dihydrogen tetrametaphosphate, its derivatives, and preparation thereof

Dihydrogen metaphosphate can be synthesized via protonation, and can react with a dehydrating agent to afford tetrametaphosphate anhydride. A monohydrogen tetra-metaphosphate organic ester can be derived from the anhydride. A metal tetrametaphosphate complex can be prepared using a metal salt and a dihydrogen tetrametaphosphate.

Tetrahedral [MoO]readily binds COto produce a robust [MoO(&#x3ba;-CO)]that can affect the reduction of COto formate.

Carbon-dioxide compound and catalyst

One aspect of the present invention relates to methods of preparing enedialkylidyne complexes, enediynes, and alkyne metathesis catalysts, as well as methods of catalyzing alkyne metathesis reactions. The present invention also relates to methods of activating enedialkylidyne complexes for metathesis. The present invention also relates to enedialkylidyne complexes.

Formation of enediynes by reductive coupling followed by alkyne metathesis

A method for the generation of ammonia from dinitrogen is provided including reacting a three coordinate, low oxidation state transition metal complex with dinitrogen under substantially atmospheric pressures to obtain a metal-nitrido complex, whereby the oxidation state of the metal complex increases, and reducing the metal of the metal nitrido complex in the presence of a hydrogen source, so as to obtain NH . A novel metal complex is provided which is capable of cleaving small molecules which includes a metal selected from the group consisting of molybdenum, titanium, vanadium, niobium, tungsten, uranium and chromium. The compound may have the formula M(NR R ) where M is a transition metal; R and R are independently selected from the group consisting of tertiary alkyls, phenyls and substituted phenyls. The compound permits cleavage of nitrogen-nitrogen triple bonds.

Metal nitrido complexes

A method for the generation of ammonia from dinitrogen is provided including reacting a three coordinate, low oxidation state transition metal complex with dinitrogen under substantially atmospheric pressures to obtain a metal-nitrido complex, whereby the oxidation state of the metal complex increases, and reducing the metal of the metal nitrido complex in the presence of a hydrogen source, so as to obtain NH.sub.3. A novel metal complex is provided which is capable of cleaving small molecules which includes a metal selected from the group consisting of molybdenum, titanium, vanadium, niobium, tungsten, uranium and chromium. The compound may have the formula M(NR.sub.1 R.sub.2).sub.3 where M is a transition metal; R.sub.1 and R.sub.2 are independently selected from the group consisting of tertiary alkyls, phenyls and substituted phenyls. The compound permits cleavage of nitrogen-nitrogen triple bonds.

Method for the generation of ammonia

A method for the generation of ammonia from dinitrogen is provided including reacting a three coordinate, low oxidation state transition metal complex with dinitrogen under substantially atmospheric pressures to obtain a metal-nitrido complex, whereby the oxidation state of the metal complex increases, and reducing the metal of the metal nitrido complex in the presence of a hydrogen source, so as to obtain NH.sub.3. A novel metal complex is provided which is capable of cleaving small molecules which includes a metal selected from the group consisting of molybdenum, titanium, vanadium, niobium, tungsten, uranium and chromium. The compound may have the formula M(NR.sub.1 R.sub.2).sub.3 where M is a transition metal; R.sub.1 and R.sub.2 are independently selected from the group consisting of tertiary alkyls, phenyls and substituted phenyls. The compound permits cleavage of nitrogen--nitrogen triple bonds.

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Dorchester, MA, United States of America

Christopher Colin Cummins