Description

Bis(Diphenylphosphino)Acetylene is a versatile organophosphorus ligand characterized by its rigid, linear acetylene backbone connecting two diphenylphosphino groups. This structure is critical for its role in forming stable, well-defined coordination complexes with a wide range of transition metals. It is an essential building block for researchers and manufacturers in advanced materials science and catalysis. Key industries that utilize this ligand include pharmaceutical intermediates, fine chemical synthesis, and materials research for electronic applications.

Application

• As a bidentate ligand in homogeneous catalysis, particularly for cross-coupling reactions (e.g., Sonogashira, Suzuki-Miyaura).
• Precursor for the synthesis of complex phosphine-based macrocycles and supramolecular assemblies.
• Building block in the development of metal-organic frameworks (MOFs) and coordination polymers with tailored properties.
• Key component in the preparation of transition metal catalysts used in organic synthesis and polymerization processes.
• Research chemical for studying photophysical properties of metal complexes in materials science.
• Intermediate in the synthesis of specialty ligands with enhanced electronic or steric properties for asymmetric catalysis.

Basic Information

Product Name	Bis(Diphenylphosphino)Acetylene
CAS No.	5112-95-8
Molecular Formula	C26H20P2
Molecular Weight	394.38 g/mol
Synonyms	1,2-Bis(diphenylphosphino)acetylene; DPPA; Acetylenediylbis(diphenylphosphine); Bis(diphenylphosphanyl)ethyne; Ethynylenebis(diphenylphosphine); (Diphenylphosphino)acetylene-diphenylphosphine adduct; NSC 168110
EINECS	225-838-6

Quality Control

Our Bis(Diphenylphosphino)Acetylene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including NMR, HPLC, and elemental analysis, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee compliance with your research and production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at room temperature (15-25°C). Due to its sensitivity to oxidation, the container should be flushed with inert gas after each opening to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	145 - 150 °C
Loss on Drying	≤ 0.5%

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