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Chemical compound
Crabtree's catalyst is an organoiridium compound with the formula [C8H12IrP(C6H11)3C5H5N]PF6. It is a homogeneous catalyst for hydrogenation and hydrogen-transfer
Crabtree's_catalyst
Topics referred to by the same term
Indian electrical equipment Havells Crabtree Publishing, a children's book publishing company Crabtree's catalyst, a complex of iridium with 1,5-cyclooctadiene
Crabtree
British and American chemist (born 1948)
naturalized citizen of the United States. Crabtree is particularly known for his work on "Crabtree's catalyst" for hydrogenations, and his textbook on
Robert_H._Crabtree
Chemical compound
Prize-winning Grubbs' catalyst and the homogeneous hydrogenation catalyst Crabtree's catalyst. Grubbs' catalyst (first generation) Crabtree's catalyst Streuli, C
Tricyclohexylphosphine
Chemical reaction
asymmetric hydrogenation reactions in 1979 with the invention of Crabtree's catalyst. In the early 1990's, the introduction of P,N ligands by several
Asymmetric_hydrogenation
Organic molecule containing two or more fused cyclobutane rings
hydrazine-mediated deoxygenation reaction followed by hydrogenation with Crabtree's catalyst effects reduction to the cyclohexane ring. Dewar benzene, parent
Ladderane
Chemical reaction between molecular hydrogen and another compound or element
hydrogenation catalysts and their precursors Dichlorotris(triphenylphosphine)ruthenium(II) is a precatalyst based on ruthenium. Crabtree's catalyst is active
Hydrogenation
Chemistry of organometallic compounds containing an iridium-carbon bond
removal by hydrogenation. Crabtree's catalyst ([Ir(P(C6H11)3)(pyridine)(cyclooctadiene)]PF6) is a versatile homogeneous catalyst for hydrogenation of alkenes
Organoiridium_chemistry
Molecular geometry of five coplanar atoms
carboplatin. Many homogeneous catalysts are square planar in their resting state, such as Wilkinson's catalyst and Crabtree's catalyst. Other examples include
Square planar molecular geometry
Square_planar_molecular_geometry
Heterocyclic aromatic organic compound
dissociate pyridine. Numerous square planar complexes are known, such as Crabtree's catalyst. The pyridine ligand replaced during the reaction is restored after
Pyridine
Coordination compound
Chlorobis(cyclooctene)rhodium dimer, source of "RhCl". Crabtree's catalyst, a very active catalyst for hydrogenation. (Benzylideneacetone)iron tricarbonyl
Transition metal alkene complex
Transition_metal_alkene_complex
Chemical compound
Selected metal 1,5-COD complexes. Bis(cyclooctadiene)nickel(0). Crabtree's catalyst. The complex Rh2(COD)2Cl2. Co(1,5-cyclooctadiene)(cyclooctenyl).
1,5-Cyclooctadiene
Chemical element with atomic number 77 (Ir)
process fundamental to useful reactions. For example, Crabtree's catalyst, a homogeneous catalyst for hydrogenation reactions. Iridium complexes played
Iridium
Organic compound of the form R–B(OH)2
arenes to an arylboronate ester with iridium catalyst [IrCl(COD)]2 (a modification of Crabtree's catalyst) and base 4,4′-di-tert-butyl-2,2′-bipyridine
Boronic_acid
British cinematographer and film director (1900–1975)
at Yale University, where he developed what came to be known as Crabtree's catalyst. Out of the Blue (1931) The Maid of the Mountains (1932) Verdict
Arthur_Crabtree
Chemical compound
used precursor to other iridium complexes. A notable derivative is Crabtree's catalyst. The chloride ligands can also be replaced with methoxide to give
Cyclooctadiene iridium chloride dimer
Cyclooctadiene_iridium_chloride_dimer
Robert H. Crabtree (born 1948), Organometallic Chemist, Professor of Inorganic Chemistry, Yale University, creator of Crabtree's catalyst Andrew Gamble
List_of_Old_Brightonians
Corey–Chaykovsky reagent (O=S(CH2)Me2) Cornforth reagent ([pyH]2[Cr2O7]) Crabtree's catalyst (Ir(COD)(py)(PCy3)+) Creutz–Taube complex ([(NH3)10Ru2(pyrazine)]5+)
List of inorganic compounds named after people
List_of_inorganic_compounds_named_after_people
Class of chemical compounds
pyridines, imidazole derivatives are common ligands in nature. Crabtree's catalyst, a popular catalyst for hydrogenations, is a pyridine complex. Although transition
Transition metal pyridine complexes
Transition_metal_pyridine_complexes
Coordination compound
Bis(cyclooctadiene)nickel(0), a catalyst and source of "naked nickel." A complex of trans-butadiene Crabtree's catalyst, a catalyst for hydrogenation of hindered
Transition metal complexes of dienes, trienes, and tetraenes
Transition_metal_complexes_of_dienes,_trienes,_and_tetraenes
Chemical compound
Jacobsen's catalyst is the common name for N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminomanganese(III) chloride, a coordination compound
Jacobsen's_catalyst
Chemical element with atomic number 46 (Pd)
The complex bis(triphenylphosphine)palladium(II) dichloride is a useful catalyst. Palladium forms a range of zerovalent complexes with the formula PdL4
Palladium
reductions first with NaBH4 to triol 22 and then hydrogen gas and Crabtree's catalyst give triol 23. These positions were protected by trimethylsilyl chloride
Wender_Taxol_total_synthesis
Type of catalysis involving reactants & catalysts in different phases of matter
catalysts differs from that of the reagents or products. The process contrasts with homogeneous catalysis where the reagents, products and catalyst exist
Heterogeneous_catalysis
Class of molecules
activity to Crabtree’s catalyst. Palladium(II) catalysts with bis(pyridine)carbodicarbene ligands have been shown to be successful catalysts for Suzuki-Miyaura
Carbones
process fundamental to useful reactions. For example, Crabtree's catalyst, a homogeneous catalyst for hydrogenation reactions. Iridium is usually supplied
Iridium_compounds
protons: 2 H2O → 4 H+ + 4 e− + O2 Many catalysts are effective, both homogeneous catalysts and heterogeneous catalysts. The oxygen evolving complex in photosynthesis
Water_oxidation_catalysis
Field of chemistry
product upon reaction. For example, Crabtree and coworkers utilized this method in screening for a hydrosylation catalysts for alkene and imine. Unfortunately
Supramolecular_catalysis
Addition of Si-H bonds across unsaturated bonds
mechanistically similar to the hydrogenation of alkenes. In fact, similar catalysts are sometimes employed for the two catalytic processes. The prevalent
Hydrosilylation
homogeneous catalysis. One such success is the second generation Grubbs catalyst. Historically, N-heterocyclic carbenes were thought to mimic properties
Transition_metal_NHC_complex
Method for producing hydrogen and carbon monoxide from hydrocarbon fuels
Steam reforming reaction kinetics, in particular using nickel-alumina catalysts, have been studied in detail since the 1950s. The purpose of pre-reforming
Steam_reforming
of stilbene from styrene and arenes using a palladium chloride catalyst. Shvo's catalyst was developed for one of the earliest uses of ketone hydrogenation
Metal-ligand_cooperativity
examples of metal phosphine complexes include Wilkinson's catalyst (Rh(PPh3)3Cl), Grubbs' catalyst, and tetrakis(triphenylphosphine)palladium(0). Many metal
Metal-phosphine_complex
Country in West Asia
of its industrial equipment domestically, including turbines, pumps, catalysts, refineries, oil tankers, drilling rigs, offshore platforms, towers, pipes
Iran
Addition of an N–H group across a C=C or C≡C bond
"hydroamination" is generally reserved for situations where the reaction requires a catalyst. Hydroamination is however of little value industrially. Hydroamination
Hydroamination
Chemical reaction involving the removal of hydrogen
aromatics. As a problematic reaction, the fouling and inactivation of many catalysts arises via coking, which is the dehydrogenative polymerization of organic
Dehydrogenation
Study of organic compounds containing metal(s)
research and industrial chemical reactions, as well as in the role of catalysts to increase the rates of such reactions (e.g., as in uses of homogeneous
Organometallic_chemistry
Process of converting methane to another molecule
typically methanol or acetic acid, through the use of transition metal catalysts. In the realm of carbon-hydrogen bond activation and functionalization
Methane_functionalization
Archived from the original on 5 March 2006. Retrieved 30 June 2025. "A Catalyst for Social Change". The Daily Star. 20 September 2013. Retrieved 12 February
List_of_ethnic_slurs
Chemical element with atomic number 45 (Rh)
use (consuming about 80% of world rhodium production) is as one of the catalysts in the three-way catalytic converters in automobiles. Because rhodium
Rhodium
American chemist
Cabrera, P. J.; Lee, M.; Sanford, M. S. "Second-Generation Palladium Catalyst System for Transannular C–H Functionalization of Azabicycloalkanes," J
Melanie_Sanford
Chemistry of compounds with Mo-C bonds
longer-lived catalyst. To reconvert the chloride byproduct, they added magnesium in reaction. The p-nitrophenolate is a very active catalyst. On the other
Organomolybdenum_chemistry
Romanian chemist
particular, she worked on the use of iron and iron oxide nanoparticles as catalysts or magnetically recyclable supports for hydrogenation and oxidation reactions
Audrey_Moores
Conversion of CO2 into higher-energy products using solar energy
several catalysts have been paired with the Ru(bpy)3 photosensitizer. When paired with methylviologen, cobalt, and nickel-based catalysts, carbon monoxide
Photochemical reduction of carbon dioxide
Photochemical_reduction_of_carbon_dioxide
Swiss chemist (born 1971)
Amanda; Faller, Jack W.; Crabtree, Robert H. (2002-08-19). "Chelated Iridium(III) Bis-carbene Complexes as Air-Stable Catalysts for Transfer Hydrogenation"
Martin_Albrecht_(chemist)
American comedian and actress (born 1960)
Gloria Estefan, and Lance Bass. Her longtime friendship with Bass was the catalyst for a feud between Griffin and gossip blogger Perez Hilton. In 2007, Griffin
Kathy_Griffin
Organic reaction
1021/ar00051a009. Crabtree, R. H. (2001). "Alkane C–H activation and functionalization with homogeneous transition metal catalysts: a century of progress
Carbon–hydrogen bond activation
Carbon–hydrogen_bond_activation
"Chapter 5. Understanding and Harnessing Hydrogenases, Biological Dihydrogen Catalysts". In Peter M.H. Kroneck and Martha E. Sosa Torres (ed.). The Metal-Driven
Photoelectrolysis_of_water
American abolitionist (1800–1859)
blacks equally. ... He was a success, a tremendous success because he was a catalyst of the Civil War. He didn't cause it but he set fire to the fuse that led
John_Brown_(abolitionist)
Russian chemist (born 1946)
Hydrocarbons with H2O2 Using Biomimetic Non-heme Iron and Manganese Oxidation Catalysts”, in: R. Van Eldik, J. Reedijk (Eds.), “Adv. Inorg. Chem.: Homogeneous
Georgiy_B._Shul'pin
American football player and commentator (born 1977)
the New York Giants. During both the 1998 and 2007 seasons, Moss was the catalyst of the two highest scoring offenses of all time at the time they occurred
Randy_Moss
Type of reactive intermediate in chemistry
have been successful as catalysts for Suzuki-Miyaura and Heck-Mizoroki cross-coupling reactions. Again, in many cases, MIC catalysts are superior to their
Mesoionic_carbene
Chemical element with atomic number 8 (O)
the electrocatalytic O 2 evolution from oxides and oxoacids. Chemical catalysts can be used as well, such as in chemical oxygen generators or oxygen candles
Oxygen
Guyanese-American organometallic chemist (born 1957)
utilized is the design of molecular catalysts that operate by CH activation: a reaction whereby a molecular catalyst, MX, can react with and cleave the
Roy_A._Periana
Chemical compound
(link) CS1 maint: others (link) Hattori, Hideshi (2001). "Solid base catalysts: Generation of basic sites and application to organic synthesis". Applied
Tetramethylethylene
Field of study
compounds as catalysts in organic reactions. Stable organorhodium compounds and transient organorhodium intermediates are used as catalyst such as in olefin
Organorhodium_chemistry
Coordination complexes of transition metals and metal ions with carbon monoxide ligands
ligands. Metal carbonyls are useful in organic synthesis and as catalysts or catalyst precursors in homogeneous catalysis, such as hydroformylation and
Metal_carbonyl
Class of coordination compounds
petrol. MMT is a commercially useful antiknock compound. CpCo(CO)2 is a catalyst for the synthesis of pyridines. (C4H4)Fe(CO)3. CpFe(CO)2I is an example
Half_sandwich_compound
English punk rock band
started creeping in ... I think everybody was ready to go and we were the catalyst." The leading New York punk band, the Ramones, released their debut album
Sex_Pistols
Chemical compound
Union Carbide catalyst for ethylene polymerization, although other synthetic routes exist for the formation of this important catalyst. Chromocene is
Chromocene
Coordination complex of a metal and cyclopentadienyl groups
type [MCp2Lx]. Some are catalysts for ethylene polymerization. Metallocenes are often thermally stable, and find use as catalysts in various types of reactions
Cyclopentadienyl_complex
Naturally produced monosaccharide
Acetic Acid via Catalytic Fast Pyrolysis of Hexoses over Potassium Salts". Catalysts. 10 (5): 502. doi:10.3390/catal10050502. Bosch L, Fyles T, James T (November
Glucose
Coastal town in Lancashire, England
"made a real difference to local communities through the use of arts as a catalyst for the development of a sense of confidence and self-worth, developing
Blackpool
Chemical element with atomic number 5 (B)
anion, BF4−. Boron trifluoride is used in the petrochemical industry as a catalyst. The halides react with water to form boric acid. Other boron halides include
Boron
Chemical compound
yellow-orange, air-stable compound is a widely used precursor to homogeneous catalysts. The synthesis of [RhCl(COD)]2 involves heating a solution of hydrated
Cyclooctadiene rhodium chloride dimer
Cyclooctadiene_rhodium_chloride_dimer
Muslim families to the Somali seaboard. These clans came to serve as catalysts, forwarding the faith to large parts of the Horn region. Islam came to
History_of_Islam
Chemical reaction in which two ligands of a metal complex combine
from an organic aldehyde is most famously demonstrated using Wilkinson's catalyst: RhCl(PPh3)3 + RCHO → RhCl(CO)(PPh3)2 + RH + PPh3 Please see Tsuji-Wilkinson
Migratory_insertion
Branch of organometallic chemistry
with organic compounds featuring nickel-carbon bonds. They are used as a catalyst, as a building block in organic chemistry and in chemical vapor deposition
Organonickel_chemistry
British chemist (1933–2022)
and -iridium Complexes – Approaches to New Types of Homogeneous Catalysts". Acc. Chem. Res. 11 (8): 301–307. doi:10.1021/ar50128a003. --- 274 citations
Peter_Maitlis
Chemical reaction used in organic synthesis
halides. The greater ability of allyl groups to migrate to the palladium catalyst allowed the reactions to be performed at lower temperatures. Yields for
Stille_reaction
Chemical compound
derivatives. A famous derivative is [RhCl(PPh3)3] known as Wilkinson's catalyst. Either the ethanol solvent or the phosphine serves as reductant: "RhCl3(H2O)3"
Rhodium(III)_chloride
Methods of storing hydrogen for later use
kinetics and storage capacity can be improved through nanomaterial-based catalyst doping, as shown in the work of the Clean Energy Research Center in the
Hydrogen_storage
Chemical compound
itself is not used in industry, metal carbonyls are an important class of catalysts for a wide range of industrial processes including hydroformylation amongst
Dicarbonyldi-μ-chlorodichlorodiplatinum
Dicarbonyldi-μ-chlorodichlorodiplatinum
2002 studio album by the Delgados
band performed music during an art show by Joe Coleman. It served as the catalyst for their next album, giving vocalist and guitarist Alun Woodward the urge
Hate_(The_Delgados_album)
Variation of olefin metathesis
ruthenium catalysts are not sensitive to air and moisture, unlike the molybdenum catalysts. The ruthenium catalysts, known better as the Grubbs Catalysts, as
Ring-closing_metathesis
Type of molecule reacting to light
absorbers that alter the course of a photochemical reaction. They usually are catalysts. They can function by many mechanisms; sometimes they abstract an electron
Photosensitizer
American physician-scientist (born 1950)
Battle Of The Bands" Archived July 3, 2009, at the Wayback Machine. The NIH Catalyst. Celia Hooper. Jan/Feb 1998. Kaplan, Karen (September 18, 2010). "To scientists
Francis_Collins
said: "In Stephanie and Ryan, we have cast two fantastic actors as the catalyst for this fun, fiery storyline". Courtney Vance, played by Stephanie Davis
List of Coronation Street characters introduced in 2023
List_of_Coronation_Street_characters_introduced_in_2023
American pediatrician and professor
Retrieved April 14, 2022. "Catherine Gordon | Harvard Catalyst Profiles | Harvard Catalyst". connects.catalyst.harvard.edu. Retrieved April 14, 2022. "Two Children's
Catherine_M._Gordon
Chemical reaction
(0) species is generally utilized as the catalyst, though nickel is sometimes used. A variety of nickel catalysts in either Ni0 or NiII oxidation state can
Negishi_coupling
British chemist (1936–2020)
wide acceptance. His work on metal carbide catalysts led to the corporate spin-off company Oxford Catalysts plc, which became Velocys. Green along with
Malcolm_Green_(chemist)
Entertainment complex in Norfolk, Virginia, U.S.
as an important component to renewing a declining downtown, a seminal catalyst to further development. The concept combined to varying degrees major restaurants
Waterside_District
Type of reaction in organometallic chemistry
and regenerates the catalyst; however, in the Heck reaction and Wacker process, reductive elimination is involved only in catalyst regeneration, as the
Reductive_elimination
Class of organometalic compounds
A variety of homogeneous carbene catalysts, especially the Grubbs' ruthenium and Schrock molybdenum-imido catalysts have been used for olefin metathesis
Transition metal carbene complex
Transition_metal_carbene_complex
Chemical compound
transfer hydrogenation reactions, often in the presence of a transition metal catalyst. Many analogues have been prepared from primary, secondary, and even tertiary
Ammonia_borane
Protein-coding gene in the species Homo sapiens
"Peptidyl-prolyl cis-trans isomerases, a superfamily of ubiquitous folding catalysts". Cellular and Molecular Life Sciences. 55 (3): 423–436. doi:10.1007/s000180050299
PPIB
Model in organometallic chemistry
(2024-08-14). "Transition Metal Mimetic π-Activation by Cationic Bismuth(III) Catalysts for Allylic C–H Functionalization of Olefins Using C═O and C═N Electrophiles"
Dewar–Chatt–Duncanson_model
Type of cruiser in the late 19th and early 20th centuries
first-line battleships. Her destruction in Havana harbor in 1898 was a catalyst in starting the Spanish–American War. Maine's immediate successors, New
Armored_cruiser
Fraser (1850-1933)". Black Past. Retrieved May 3, 2026. Knowledge Center | Catalyst.org Archived 2013-03-12 at the Wayback Machine Kane 1997, p. 47. Harley
List of American women's firsts
List_of_American_women's_firsts
Motorcycle speedway team
signed Russian Vadim Tarasenko late in the season, which proved to be the catalyst for winning the play offs, defeating Oxford Cheetahs and Poole to claim
Glasgow_Tigers_(speedway)
Any chemical compound having at least one boron atom
anion, BF4−. Boron trifluoride is used in the petrochemical industry as a catalyst. The halides react with water to form boric acid. Boron is found in nature
Boron_compounds
Group of chemical compounds containing mercury
is produced by the addition of HCl to acetylene using a mercury-carbon catalyst. Considerable effort is required to limit the contamination of the product
Organomercury_chemistry
Transfer hydrogenation (TH) catalysts, e.g. Shvo catalyst, are related to catalysts used for ionic hydrogenation. TH catalysts however do not employ strong
Ionic_hydrogenation
Type of compound having a metal center
active catalysts for olefin polymerization. Unlike traditional and still dominant heterogeneous Ziegler–Natta catalysts, metallocene catalysts are homogeneous
Metallocene
Chemical reaction in which one entity is inserted between bonded parts of another
insertion of carbon monoxide into the iridium-carbon bond. The active catalyst species is regenerated by the reductive elimination of acetyl iodide from
Insertion_reaction
PopMatters. MacDonald, Erin E., ed. (2014). "Queering Downey Part 1: Queer as Catalyst in Less Than Zero, Home for the Holidays and One Night Stand". Robert Downey
List of feature films with bisexual characters
List_of_feature_films_with_bisexual_characters
from the original on 2010-05-14. Retrieved 2009-10-30. "Extreme Slime". Catalyst. 2002-03-10. ABC. "Hot Springs National Park (U.S. National Park Service)"
List_of_hot_springs
American chemist (1929–2019)
Chemistry (2002), 74(12), 2323-2352. George W. Parshall, Catalyst of Change Robert H. Crabtree, "George W. Parshall", Biographical Memoirs of the National
George_Parshall
Ligand with unclear oxidation state
(February 2010). "Chemistry. Radical ligands confer nobility on base-metal catalysts". Science. 327 (5967): 794–5. doi:10.1126/science.1183281. PMID 20150476
Non-innocent_ligand
Fragrance industry awards
Pour Homme Fragrances Exclusive 1996 Tommy by Tommy Hilfiger Aramis 1995 Catalyst for Men Halston Borghese 1994 Vendetta Pour Homme Elizabeth Arden Specialty
FiFi_Awards
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CRABTREES CATALYST