23743-25-1

Usage

Type of Ligand

Bidentate phosphine ligand

Application

Organometallic chemistry and coordination chemistry

Chelating Ability

Can form coordination complexes with metal atoms or ions by binding to them through two different atoms

Stabilizing Property

Known for its ability to stabilize metal complexes

Catalytic Activity

Enhances catalytic activity in various reactions such as hydrogenation, isomerization, and cross-coupling reactions

Structure

Unique structure that contributes to its properties

Field of Use

Synthetic chemistry and materials science

Research Areas

Pharmaceutical synthesis, polymerization, and asymmetric catalysis

InChI:InChI=1/C30H32P2/c1-5-13-27(14-6-1)23-31(24-28-15-7-2-8-16-28)21-22-32(25-29-17-9-3-10-18-29)26-30-19-11-4-12-20-30/h1-20H,21-26H2

Upstream product

• 107-06-2 1,2-dichloro-ethane 
• 7650-89-7 tribenzylphosphine 
• 122703-97-3 bis-1,2-tribenzylphosphonium ethane dibromide 

Downstream Products

• 119415-57-5 1,1,4,4-tetrabenzyl-1,4-diphosphoniocyclohexane dibromide 
• 910783-90-3 trans-[Ru(H)(Cl)((C₆H₅CH₂)2PCH₂CH₂P(CH₂C₆H₅)2)2] 

Relevant academic research and scientific papers

Structure of diiodine adducts of some di- and tri-tertiaryphosphines in the solid state and in solution

A series of ditertiaryphosphine-tetraiodine adducts R2P(I2)(CH2)nP(I2)R 2 (R = Ph, n = 1-4; R = PhCH2 or o-CH3C6H4, n = 2) and two tritertiaryphosphine-hexaiodine adducts, PhP(CH2CH2PPh2)2I6 and CH3C(CH2-PPh2)3I6 have been prepared and characterised by 31P-{H} solution NMR and Raman spectroscopy. In the case of Ph2P(I2)(CH2)nP(I 2)Ph2 (n = 2 or 4), 31P-{H} NMR magic angle spinning NMR spectroscopy has been used to investigate the nature of the compounds in the solid state. In agreement with our previous extensive studies on the monophosphine derivatives, R3PI2, the tetraiododiphosphine compounds Ph2P(I2)(CH2)nP(I 2)Ph2 (n = 2 or 4) isolated from diethyl ether contain molecular four-co-ordinate phosphorus centres onto which the diiodine is bound as a linear spoke, as indicated by their 3IP-{H} NMR shifts obtained in CDCl3 solution. Again, in agreement with our previous solution studies of the monophosphine derivatives R3PI2, the diphosphine-tetraiodine adducts completely ionise in CDCl3 solution to produce the ionic compounds [R2P(I)(CH2)nP(I)R2]2I; the solution 31P-{H} NMR shifts are very similar to analogous solution shifts previously assigned to [R3PI]I. The Raman band assignable to v(P-I) has been identified for the compounds and a further band at lower frequency has been observed and assigned to v(I-I). Although the solid-state NMR spectra of the triphosphine-hexaiodine adducts were not recorded, a band assignable, to v(I-I) was observed in the Raman spectrum, suggesting the molecular four-co-ordinate spoke structure also prevails for these hexaiodotritertiaryphosphine compounds in the solid state. From solution 31P-{H} NMR shifts these adducts also appear to ionise in CDCl3 solution.

OXYPHOSPHORANE ANIONS AS NUCLEOPHILES IN INTRAMOLECULAR DISPLACEMENT REACTIONS

The present paper reports a kinetic study of alkaline decomposition of four bromoalkyltriphenyl phosphonium bromides with the bromo-substituent in 3-, 4-, 5, and 6-positions, respectively (hereafter designated 3Br-P, 4Br-P, 5Br-P, and 6Br-P), together with the alkaline decomposition of 1,1,4,4-tetrabenzyl-1,4-diphosphoniocyclohexane dibromide (designated 2P).The very high rates of decomposition of 3Br-P and 2P are in accordance with an easy formation of five-membered oxaphospholane ring intermediates through participation of oxyphosphorane anions in intramolecular displacement reactions, with carbon in 3Br-P, and with phosphorus in the neighbouring phosphonium cation of 2P. Key words: Oxyphosphorane anions, bromoalkyltriphenyl phosphonium bromides, 1,1,4,4-tetrabenzyl-1,4-diphosphoniocyclohexane dibromides.