1,2-Bis(dicyclohexylphosphino)ethane

{{Chembox

| ImageFile = Dcpe.svg

| ImageSize =

| ImageFile2 = Bis(dicyclohexylphosphino)ethane-3D-balls-by-AHRLS-2012.png

| PIN = (Ethane-1,2-diyl)bis(dicyclohexylphosphane)

| OtherNames = dcpe

|Section1={{Chembox Identifiers

| CASNo = 23743-26-2

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = DG2ZG8EGQ2

| PubChem = 534202

| ChemSpiderID = 465407

| SMILES = C1CCC(CC1)P(CCP(C2CCCCC2)C3CCCCC3)C4CCCCC4

| InChI = 1/C26H48P2/c1-5-13-23(14-6-1)27(24-15-7-2-8-16-24)21-22-28(25-17-9-3-10-18-25)26-19-11-4-12-20-26/h23-26H,1-22H2

| InChIKey = BOUYBUIVMHNXQB-UHFFFAOYAM

| StdInChI = 1S/C26H48P2/c1-5-13-23(14-6-1)27(24-15-7-2-8-16-24)21-22-28(25-17-9-3-10-18-25)26-19-11-4-12-20-26/h23-26H,1-22H2

| StdInChIKey = BOUYBUIVMHNXQB-UHFFFAOYSA-N}}

|Section2={{Chembox Properties

| Formula = C₂₆H₄₈P₂

| MolarMass = 422.61

| Appearance = white solid

| Density =

| MeltingPtC = 96-97

}}

|Section3={{Chembox Hazards

| MainHazards =

| FlashPt =

| AutoignitionPt =}}

}}

Bis(dicyclohexylphosphino)ethane, abbreviated dcpe, is an organophosphorus compound with the formula (C₆H₁₁)₂PCH₂CH₂P(C₆H₁₁)₂. It is a white solid that is soluble in nonpolar organic solvents.{{cite book |doi=10.1002/047084289X.rn02031 |chapter=1,2-Bis(dicyclohexylphosphino)ethane |title=Encyclopedia of Reagents for Organic Synthesis |date=2017 |last1=Rouchet |first1=Jean-Baptiste |pages=1–5 |isbn=978-0-470-84289-8 }} The compound is used as a bulky and highly basic diphosphine ligand in coordination chemistry.Sowa, J. R., Jr., Zanotti, V., Facchin, G., Angelici, R. J., "Calorimetric studies of the heats of protonation of the metal in Fe(CO)₃(bidentate phosphine, arsine) complexes: effects of chelate ligands on metal basicity", J. Am. Chem. Soc. 1992, 114, 160. {{doi|10.1021/ja00027a023}}