Dichloro(1,5-cyclooctadiene)palladium(II) TCI D2604

Chemical Identity

Other names: 1,5-Cyclooctadienepalladium(II) Dichloride
CAS No.: 12107-56-1
PubChem: CID 5702536·SID 87569025
Formula: C8H12Cl2Pd
Molecular weight: 285.50 g/mol
Purity: >98.0%(T)

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: (1Z,5Z)-cycloocta-1,5-diene;dichloropalladium
SMILES: C1CC=CCCC=C1.Cl[Pd]Cl
InChIKey: RRHPTXZOMDSKRS-PHFPKPIQSA-L
MDL: MDL00012412

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TCI D2604 Dichloro(1,5-cyclooctadiene)palladium(II) is an organopalladium complex in which a 1,5-cyclooctadiene diene ligand is bound to palladium together with two chloride ligands. In catalysis laboratories, this compound serves as a highly practical palladium catalyst precursor: the cyclooctadiene ligand binds firmly enough to keep the complex stable during storage, yet remains labile enough to be displaced by other ligands such as phosphines, N-heterocyclic carbenes, bipyridine, or other nitrogen donor ligands when an active catalyst needs to be formed in situ. For that reason, this reagent has become a flexible starting point for many palladium-based catalytic systems.

The properties that make it a widely chosen reagent are the ease of ligand exchange and the clearly defined palladium content in the +2 oxidation state. Researchers can design catalysts with ligands of their own choosing without having to prepare palladium complexes from raw metal, so stoichiometry is better controlled and reaction outcomes are more reproducible. Because the complex is supplied as a solid, it is also easier to weigh and measure out than a precursor solution, while remaining straightforward to store under ordinary laboratory conditions.

In Indonesian laboratories, this reagent is typically used in university and institutional research groups working on catalysis and synthetic organic chemistry, particularly in studies of C–H bond activation and related transformations. Its solid form suits laboratories that prepare catalyst systems batch by batch on a small scale, where accurate weighing and predictable ligand substitution behaviour matter more than bulk handling. It fits naturally into method development work in which several ligand sets are screened against the same palladium source.

TCI brochures (PDF)

Trifluoroborate Salts for Direct Introduction of Hydroxymethyl Group and Aminomethyl Group 2026-01-05 · p. 1
C-H Bond Activation Reaction 2025-06-20 · p. 4
Transition Metal Catalysts 2026-04-10 · p. 14
Suzuki-Miyaura Cross Coupling Reaction 2025-12-01 · p. 23

Related TCI products

C–H bond activation studies: the complex delivers a well-defined palladium(II) source whose labile diene ligand can be exchanged for the directing ligand required by the activation system under investigation.
In situ catalyst generation: researchers combine the precursor with phosphines or N-heterocyclic carbenes directly in the reaction vessel, forming the active palladium species without isolating an intermediate complex.
Ligand screening in method development: a single palladium source can be paired with many different donor ligands, allowing systematic comparison of catalytic performance while keeping the metal input constant.
Coordination chemistry teaching and research: the straightforward substitution of 1,5-cyclooctadiene by nitrogen donor ligands such as bipyridine illustrates ligand exchange behaviour clearly for synthesis and characterisation exercises.
Reproducible small-scale synthetic work: because the palladium oxidation state is clearly defined, stoichiometry can be calculated precisely, which supports repeatable results across successive experimental runs.

Brand	TCI
CAS number	12107-56-1
Molecular formula	—
Purity	—
Category	Chemistry > Catalysis and Inorganic Chemistry > C–H Activation [Catalysis]
Pack sizes	please refer to the available TCI catalogue packaging options for this product code
Physical form	solid
Storage	store under ordinary laboratory storage conditions in a closed container

Chemical name: Dichloro(1,5-cyclooctadiene)palladium(II)

Store the material in its original tightly closed container, kept dry and protected from moisture, in a cool and well-ventilated chemical storage area away from incompatible reagents. Glass or the manufacturer's supplied container is suitable; reseal promptly after each use to limit exposure to air and humidity. Handle the solid in a fume hood using gloves, safety glasses, and a laboratory coat, and avoid generating dust when weighing. Transfer with clean, dry spatulas to prevent contamination that could affect catalytic performance. Collect residues and spent catalyst as heavy-metal chemical waste according to institutional disposal procedures, and consult the manufacturer's safety data sheet before first use.

References cited in the TCI brochure

Gary A. Molander. Cross-Coupling of Mesylated Phenol Derivatives with Potassium Alkoxymethyltrifluoroborates Organic Letters, 2011. doi:10.1021/ol201469r