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NHC Ligands and Complexes

Find NHC ligands and complexes for cross-coupling, metathesis, and organometallic synthesis. Review carbene-based systems used in modern catalytic method development.

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  1. PTIO
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    PTIO
    CAS: 18390-00-6 EC Number: 634-050-5 PubChem CID: 2733513 Formula: C13H17N2O2 Molecular Weight: 233.29
    ≥98%(T)
    In Stock Item #: P160514
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    Technical Identifiers
    SMILES
    CC1(C([N+](=C(N1[O])C2=CC=CC=C2)[O-])(C)C)C
    InChIKey
    DYUUGILMVYJEHY-UHFFFAOYSA-N
    InChI
    1S/C13H17N2O2/c1-12(2)13(3,4)15(17)11(14(12)16)10-8-6-5-7-9-10/h5-9H,1-4H3
    Synonyms
    PTIO | MFCD00059929 | 1H-Imidazol-1-yloxy, 4,5-dihydro-4,4,5,5-tetramethyl-2-phenyl-, 3-oxide | PTIO (2-Phenyl-4,4,5,...
  2. TEMPO
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    TEMPO
    CAS: 2564-83-2 EC Number: 219-888-8 PubChem CID: 2724126 Formula: C9H18NO Molecular Weight: 156.25
    ≥98%
    In Stock Item #: T106827
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    Technical Identifiers
    SMILES
    CC1(CCCC(N1[O])(C)C)C
    InChIKey
    QYTDEUPAUMOIOP-UHFFFAOYSA-N
    InChI
    1S/C9H18NO/c1-8(2)6-5-7-9(3,4)10(8)11/h5-7H2,1-4H3
    Synonyms
    2,2,6,6-Tetramethylpiperidine 1-oxyl | TEMPO free radical | 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical
  3. Cyclotris(1,4-butylene terephthalate)
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    Cyclotris(1,4-butylene terephthalate)
    CAS: 63440-94-8 Formula: C36H36O12 Molecular Weight: 660.66
    ≥98%
    In Stock Item #: C342717
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    Technical Identifiers
    IUPAC Name
    3,8,15,20,27,32-hexaoxatetracyclo[32.2.2.210,13.222,25]dotetraconta-1(37),10,12,22(40),23,25(39),34(38),35,41-nonaene-2,9,14,21,26,33-hexone
    SMILES
    C1CCOC(=O)C2=CC=C(C=C2)C(=O)OCCCCOC(=O)C3=CC=C(C=C3)C(=O)OCCCCOC(=O)C4=CC=C(C=C4)C(=O)OC1
    InChIKey
    HRNLXZWSSMMFMP-UHFFFAOYSA-N
    InChI
    1S/C36H36O12/c37-31-25-7-9-27(10-8-25)33(39)45-21-3-4-23-47-35(41)29-15-17-30(18-16-29)36(42)48-24-6-5-22-46-34(40)28-13-11-26(12-14-28)32(38)44-20-2-show more
    Synonyms
    EN300-20177691 | Cyclotris(1,4-butylene Terephthalate) | FT-0665419 | PBT Cyclic Trimer | 3,8,15,20,27,32-hexaoxatetr...
  4. Galvinoxyl Free Radical - Reagent Grade,Moligand™ CAS No(2370-18-5) by Aladdin Scientific
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    Galvinoxyl Free Radical
    CAS: 2370-18-5 EC Number: 219-133-2 Formula: C29H41O2 Molecular Weight: 421.6
    Solid Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools. Reagent Grade ? General reagent-grade purity suitable for most laboratory work. Use as a dependable default when no specific higher grade is required.
    In Stock Item #: G339159
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    Technical Identifiers
    Synonyms
    2,6-di-t-Butyl-alpha-(3,5-di-t-butyl-4-oxo-2,5-cyclohexadien-1-ylidene)-p-tolyloxy, free radical
  5. 2,9-Diformyl-1,10-phenanthroline - ≥96% CAS No(57709-62-3) by Aladdin Scientific
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    2,9-Diformyl-1,10-phenanthroline
    CAS: 57709-62-3 PubChem CID: 602123 Formula: C14H8N2O2 Molecular Weight: 236.23
    ≥96%
    In Stock Item #: P304042
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    Technical Identifiers
    IUPAC Name
    1,10-phenanthroline-2,9-dicarbaldehyde
    SMILES
    C1=CC2=C(C3=C1C=CC(=N3)C=O)N=C(C=C2)C=O
    InChIKey
    RHXOPVFYZBGQGA-UHFFFAOYSA-N
    InChI
    1S/C14H8N2O2/c17-7-11-5-3-9-1-2-10-4-6-12(8-18)16-14(10)13(9)15-11/h1-8H
    Synonyms
    Q30948420 | AKOS001703860 | AMY41585 | SCHEMBL1088335 | MFCD00774291 | D83618 | 1,10-Phenanthroline-2,9-dicarboxaldeh...
  6. Scopoline
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    Scopoline
    CAS: 487-27-4 PubChem CID: 261184 Formula: C8H13NO2 Molecular Weight: 155.19
    ≥98%
    In Stock Item #: S342718
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    Technical Identifiers
    IUPAC Name
    6-methyl-2-oxa-6-azatricyclo[3.3.1.03,7]nonan-4-ol
    SMILES
    CN1C2CC3CC1C(C2O)O3
    InChIKey
    MEGPURSNXMUDAE-UHFFFAOYSA-N
    InChI
    1S/C8H13NO2/c1-9-5-2-4-3-6(9)8(11-4)7(5)10/h4-8,10H,2-3H2,1H3
    Synonyms
    SCHEMBL12618459 | 6-methyl-2-oxa-6-azatricyclo[3.3.1.0?,?]nonan-4-ol | NCIOpen2_001513 | MEGPURSNXMUDAE-UHFFFAOYSA-N ...
  7. Chloro[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]silver
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    Chloro[1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]silver
    CAS: 873297-19-9 PubChem CID: 49788523 Formula: C27H36AgClN2 Molecular Weight: 531.92
    ≥99.95% metals basis
    Out of Stock Item #: C294176
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    Technical Identifiers
    SMILES
    CC(C)c1cccc(C(C)C)c1N2C=CN(\C2=Ag/Cl)c3c(cccc3C(C)C)C(C)C
    InChIKey
    GNVDTUAJUVJOFQ-UHFFFAOYSA-M
    InChI
    1S/C27H36N2.Ag.ClH/c1-18(2)22-11-9-12-23(19(3)4)26(22)28-15-16-29(17-28)27-24(20(5)6)13-10-14-25(27)21(7)8;;/h9-16,18-21H,1-8H3;;1H/q;+1;/p-1
    Synonyms
    [(IPr)AgCl]
  8. 2,2,6,6-Tetramethyl-4-(2-propynyloxy)piperidine 1-Oxyl Free Radical - >98.0%(GC)(T), used for , CAS No. 147045-24-7, by Aladdin Scientific
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    2,2,6,6-Tetramethyl-4-(2-propynyloxy)piperidine 1-Oxyl Free Radical
    CAS: 147045-24-7 PubChem CID: 59188306 Formula: C12H20NO2 Molecular Weight: 210.3
    ≥98%(GC)(T)
    Out of Stock Item #: T161850
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    Pricing & Pack Sizes
    Technical Identifiers
    SMILES
    CC1(CC(CC(N1[O])(C)C)OCC#C)C
    InChIKey
    POEBHISKBXRUBH-UHFFFAOYSA-N
    InChI
    1S/C12H20NO2/c1-6-7-15-10-8-11(2,3)13(14)12(4,5)9-10/h1,10H,7-9H2,2-5H3
    Synonyms
    2,2,6,6-Tetramethyl-4-(2-propynyloxy)piperidine 1-Oxyl | 2,2,6,6-tetramethyl-4-(2-propynyloxy)piperidine 1-oxyl, free...
  9. 4-(2-Iodoacetamido)-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical
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    4-(2-Iodoacetamido)-2,2,6,6-tetramethylpiperidine 1-Oxyl Free Radical
    CAS: 25713-24-0 Formula: C11H20IN2O2 Molecular Weight: 339.2
    ≥98%(HPLC)
    Out of Stock Item #: I157671
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    Pricing & Pack Sizes
    Technical Identifiers
    SMILES
    CC1(CC(CC(N1[O])(C)C)NC(=O)CI)C
    InChIKey
    UCTVRHAKQRFPEZ-UHFFFAOYSA-N
    InChI
    1S/C11H20IN2O2/c1-10(2)5-8(13-9(15)7-12)6-11(3,4)14(10)16/h8H,5-7H2,1-4H3,(H,13,15)
    Synonyms
    TMPIA | 1-Piperidinyloxy, 4-((iodoacetyl)amino)-2,2,6,6-tetramethyl- | DTXSID30180405 | 4-(2-Iodoacetamido)-TEMPO | 4...
  10. 3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical - >98.0%(HPLC), used for , CAS No. 2154-68-9, by Aladdin Scientific
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    3-Carboxy-2,2,5,5-tetramethylpyrrolidine 1-Oxyl Free Radical
    CAS: 2154-68-9 EC Number: 218-448-2 Formula: C9H16NO3 Molecular Weight: 186.23
    Solid ≥98%(HPLC)
    In Stock Item #: C153669
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    Pricing & Pack Sizes
    Technical Identifiers
    SMILES
    CC1(CC(C(N1[O])(C)C)C(=O)O)C
    InChIKey
    GEPIUTWNBHBHIO-UHFFFAOYSA-N
    InChI
    1S/C9H16NO3/c1-8(2)5-6(7(11)12)9(3,4)10(8)13/h6H,5H2,1-4H3,(H,11,12)
    Synonyms
    DTXSID60944153 | STK524937 | BRN 4136411 | 3-Carboxy-2,2,5,5-tetramethylpyrrolidine-1-oxyl | 2,2,5,5-Tetramethyl-1-py...
  12. 3-Methoxyazetidine hydrochloride
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    3-Methoxyazetidine hydrochloride
    CAS: 148644-09-1 Formula: C4H9NO?HCl Molecular Weight: 123.58
    ≥95%
    In Stock Item #: M123270
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    Technical Identifiers
    IUPAC Name
    3-methoxyazetidine;hydrochloride
    SMILES
    COC1CNC1.Cl
    InChIKey
    KSXGQRBTBLQJEF-UHFFFAOYSA-N
    InChI
    1S/C4H9NO.ClH/c1-6-4-2-5-3-4;/h4-5H,2-3H2,1H3;1H
    Synonyms
    FWKQNCXZGNBPFD-UHFFFAOYSA-N | Guaiacyl glyceryl ether | 3-METHOXYAZETIDINE HCL | DTXSID50623763 | SCHEMBL71184 | EN30...
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R&D Use Only Products supplied for research and development use
NHC ligands and related complexes are widely used for their strong donor properties and utility in catalysis, organometallic chemistry, and method development. Researchers often compare carbene framework, substitution pattern, preformed complex versus ligand precursor, metal compatibility, air or moisture handling, and transformation relevance. Use this category when a workflow benefits from robust donor ligands or preassembled catalyst components. It is especially helpful for comparing NHC-based options alongside phosphines, transition-metal catalysts, and metathesis systems.
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