Description

1,3-Divinyltetramethyl-Disiloxane-1,3-Bis-(2,6-Diisopropylphenyl)-Imidazolidinylidene-Platinum(0) is a highly specialized, air-sensitive platinum(0) complex featuring a robust N-heterocyclic carbene (NHC) ligand, designed for superior stability and catalytic performance. This compound serves as a premier catalyst precursor for hydrosilylation and other transition metal-catalyzed reactions, offering exceptional selectivity and efficiency under mild conditions. It is essential for advanced R&D and manufacturing in the silicone, pharmaceutical, and specialty polymer industries, where precise control over cross-linking and functionalization is critical.

Application

• High-Performance Silicone Curing: A key catalyst for the platinum-catalyzed hydrosilylation (addition) cure of vinyl-functionalized silicones, used in liquid silicone rubber (LSR), high-consistency rubber (HCR), and release coatings.
• Specialty Polymer Synthesis: Enables the controlled synthesis of functional polymers and dendrimers via precise hydrosilylation reactions.
• Pharmaceutical Intermediates: Facilitates selective silicon-carbon bond formation in the synthesis of complex organic molecules and active pharmaceutical ingredients (APIs).
• Advanced Material Fabrication: Used in the production of silicone-based optical, electronic, and biomedical materials requiring specific mechanical and thermal properties.
• Cross-linking Agent for Adhesives & Sealants: Provides reliable and rapid cure for high-performance silicone adhesives and sealants in automotive, aerospace, and construction applications.
• Catalyst for Organic Synthesis: Employed in laboratory-scale and industrial organic synthesis for various transition metal-catalyzed transformations beyond hydrosilylation.

Basic Information

Product Name	1,3-Divinyltetramethyl-Disiloxane-1,3-Bis-(2,6-Diisopropylphenyl)-Imidazolidinylidene-Platinum(0)
CAS No.	873311-51-4
Molecular Formula	C38H62N2O2PtSi2
Molecular Weight	854.21 g/mol
Synonyms	Karstedt's Catalyst Analog with NHC Ligand; Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex with 1,3-bis(2,6-diisopropylphenyl)imidazolidin-2-ylidene; Pt(dvs)(SIPr); NHC-Pt(0) Divinyltetramethyldisiloxane Complex; Platinum(0)-NHC Catalyst; SIPr-Pt(0)-DVS; 1,3-Bis(2,6-diisopropylphenyl)imidazolidin-2-ylidene(divinyltetramethyldisiloxane)platinum(0)
EINECS	Contact for details

Quality Control

Our platinum catalyst is manufactured under stringent quality protocols to ensure batch-to-batch consistency and optimal catalytic activity. Each lot undergoes comprehensive analysis, including platinum content determination and assessment of critical impurities. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications. We support custom synthesis and purity requirements for specific application needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to maintain stability and prevent decomposition. The container should be kept in a cool, dry, and well-ventilated area, away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to amber viscous liquid or solid
Identification (IR)	Conforms to structure
Platinum (Pt) Content	Contact for details
Purity (HPLC)	≥ 95% (Area %)
Solubility	Soluble in common organic solvents (toluene, THF, dichloromethane)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.