1,4-Bis(diphenylphosphino)butane

1,4-Bis(diphenylphosphino)butane

Names
Preferred IUPAC name (Butane-1,4-diyl)bis(diphenylphosphane)
Other names dppb, dpb
Identifiers
CAS Number	7688-25-7
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL71648
ChemSpider	74118
ECHA InfoCard	100.028.817
EC Number	231-698-7
PubChem CID	82124
UNII	35HP6LTD2D
CompTox Dashboard (EPA)	DTXSID4064769
InChI InChI=1S/C28H28P2/c1-5-15-25(16-6-1)29(26-17-7-2-8-18-26)23-13-14-24-30(27-19-9-3-10-20-27)28-21-11-4-12-22-28/h1-12,15-22H,13-14,23-24H2 Key: BCJVBDBJSMFBRW-UHFFFAOYSA-N
SMILES C1=CC=C(C=C1)P(CCCCP(C2=CC=CC=C2)C3=CC=CC=C3)C4=CC=CC=C4
Properties
Chemical formula	C28H28P2
Molar mass	426.480 g·mol^−1
Melting point	132–136 °C (270–277 °F; 405–409 K)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H315, H319, H335
Precautionary statements	P261, P264, P270, P271, P272, P273, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P312, P321, P330, P332+P313, P333+P313, P337+P313, P362, P363, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

1,4-Bis(diphenylphosphino)butane (dppb) is an organophosphorus compound with the formula (Ph₂PCH₂CH₂)₂. It is less commonly used in coordination chemistry than other diphosphine ligands such as dppe. It is a white solid that is soluble in organic solvents.

Coordination complexes

Nickel complexes in which the ligand is bidentate^[1][2] or monodentate^[3] are known. Palladium complexes containing dppb are used in a variety of catalytic reactions.^[4][5] The ligand's natural bite angle is 94° in its bidentate coordination mode.^[6]

Related compounds

• 1,2-Bis(dimethylphosphino)ethane
• Bis(diphenylphosphino)methane
• 1,3-Bis(diphenylphosphino)propane

References

1. Neary, Michelle C.; Quinlivan, Patrick J.; Parkin, Gerard (15 December 2017). "Zerovalent Nickel Compounds Supported by 1,2-Bis(diphenylphosphino)benzene: Synthesis, Structures, and Catalytic Properties". Inorganic Chemistry. 57 (1): 374–391. doi:10.1021/acs.inorgchem.7b02636. PMID 29244503.
2. Nwokogu, Godson C.; Cytarska, Joanna; Zaidlewicz, Marek (15 October 2005). "Dichloro[1,4-bis(diphenylphosphino)butane]nickel(II)". Encyclopedia of Reagents for Organic Synthesis. John Wiley & Sons, Ltd. doi:10.1002/047084289x.rd095.pub2. ISBN 0471936235.
3. Corain, B.; Bressan, M.; Favero, G. (February 1971). "The reactions of Ni(O) phosphino complexes with carbon monoxide". Inorganic and Nuclear Chemistry Letters. 7 (2): 197–201. doi:10.1016/0020-1650(71)80151-4.
4. Nozaki, Kyoko; Sato, Naomasa; Takaya, Hidemasa (May 1994). "Acylcyanation of Terminal Acetylenes: Palladium-Catalyzed Addition of Aryloyl Cyanides to Arylacetylenes". The Journal of Organic Chemistry. 59 (10): 2679–2681. doi:10.1021/jo00089a006.
5. Minato, Akio; Suzuki, Keizo; Tamao, Kohei; Kumada, Makoto (1984). "Mixed heteroarene oligomers". Journal of the Chemical Society, Chemical Communications (8): 511. doi:10.1039/C39840000511.
6. Birkholz (née Gensow), Mandy-Nicole; Freixa, Zoraida; van Leeuwen, Piet W. N. M. (2009). "Bite angle effects of diphosphines in C–C and C–X bond forming cross coupling reactions". Chemical Society Reviews. 38 (4): 1099–1118. doi:10.1039/B806211K. PMID 19421583.