# (S)-1-[(R)-2-[Bis(4-methoxy-3,5-dimethylphenyl) phosphino]ferrocenyl]ethyldi-tert-butyl-phosphine

**CAS:** 849924-40-9  
**PubChem CID:** [146157778](https://pubchem.ncbi.nlm.nih.gov/compound/146157778)  
**Molecular formula:** C38H52FeO2P2  
**Molar mass:** 658.6 g/mol  
**SMILES:** `CC1=CC(=CC(=C1OC)C)P(C2=CC=C[C]2C(C)P(C(C)(C)C)C(C)(C)C)C3=CC(=C(C(=C3)C)OC)C.C1=C[CH]C=C1.[Fe]`  
**InChIKey:** `UALLLNAXGQTBJA-UHFFFAOYSA-N`  
**InChI:** `InChI=1S/C33H47O2P2.C5H5.Fe/c1-21-17-26(18-22(2)30(21)34-12)36(27-19-23(3)31(35-13)24(4)20-27)29-16-14-15-28(29)25(5)37(32(6,7)8)33(9,10)11;1-2-4-5-3-1;/h14-20,25H,1-13H3;1-5H;`  

## Physicochemical properties

| Parameter | Value |
|---|---|
| PSA | 18.5 Ų |
| Hydrogen bond donors | 0 |
| Hydrogen bond acceptors | 2 |
| Rotatable bonds | 9 |
| Heavy atoms | 43 |

## 3D structure

The molecule contains 95 atoms connected by 96 chemical bonds. Interactive 3D model available at: https://molgod.org/molecule/849924-40-9/

## Synonyms

- MFCD08561157
- (S)-1-[(R)-2-[Bis(4-methoxy-3,5-dimethylphenyl) phosphino]ferrocenyl]ethyldi-tert-butyl-phosphine
- 187733-50-2
- 849924-40-9
- C38H52FeO2P2
- (R)-1-[(S)-2-[Bis(4-methoxy-3,5-dimethylphenyl)phosphino]ferrocenyl]ethyldi-tert-butyl-phosphine
- (S)-1-[(R)-2-[Bis(4-methoxy-3,5-dimethylphenyl)phosphino]ferrocenyl]ethyldi-tert-butyl-phosphine

## Data sources

- [PubChem CID 146157778](https://pubchem.ncbi.nlm.nih.gov/compound/146157778)
- [NIST WebBook](https://webbook.nist.gov/cgi/cbook.cgi?ID=849924-40-9)
- [ChEMBL](https://www.ebi.ac.uk/chembl/g/#search_results/all/query=849924-40-9)

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- Canonical: https://molgod.org/molecule/849924-40-9/

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**How to cite:** MolGod.org. "(S)-1-[(R)-2-[Bis(4-methoxy-3,5-dimethylphenyl) phosphino]ferrocenyl]ethyldi-tert-butyl-phosphine (CAS 849924-40-9)." Last modified 2026-09-16. https://molgod.org/molecule/849924-40-9/ — for a chemical fact, cite its primary source (PubChem CID 146157778); for a 3D model file, cite its MolGod ID, the variant and the SHA-256 from its licence record.

*Last updated: 2026-09-16 · Generator: MOL-GOD v3.12.33*