Bis(cyclopentadienyl)manganese(II)
Bis(cyclopentadienyl)manganese(II), also known as manganocene, has the chemical formula Mn(C5H5)2 and CAS number 73138-26-8. This organometallic compound has a molecular weight of 185.12 g/mol. It is primarily utilised as a precursor in materials science for chemical vapour deposition (CVD) and atomic layer deposition (ALD) applications, particularly in microelectronics and nanotechnology.
- IUPAC
- Manganocene

CVD and ALD Precursor
Bis(cyclopentadienyl)manganese(II) serves as a volatile precursor for thin film deposition. It is employed in chemical vapour deposition (CVD) and atomic layer deposition (ALD) processes to deposit manganese-containing thin films.
Materials Science
This organometallic compound finds application in advanced materials research. Its controlled decomposition allows for the synthesis of novel materials with specific electronic or magnetic properties.
Microelectronics
In the microelectronics industry, manganocene is used in the fabrication of semiconductor devices. It facilitates the deposition of precise layers critical for advanced electronic components.
Nanotechnology
Its use extends to nanotechnology, where it enables the creation of nanoscale structures and devices through precise vapour deposition techniques.
| Molecular weight | 185.12 |
|---|---|
| Linear formula | Mn(C5H5)2 |
| Assay | 97% |
| Melting point | 175 °C(lit.) |


Hazard statements
- H228Flammable solid
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 52 °C / 125.6 °F |
| Transport (UN / ADR) | UN 1325 4.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Bis(cyclopentadienyl)manganese(II) used for?
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Bis(cyclopentadienyl)manganese(II) is used as a precursor in materials science for chemical vapour deposition (CVD) and atomic layer deposition (ALD) applications, particularly in microelectronics and nanotechnology.
What are the CAS number and formula for Bis(cyclopentadienyl)manganese(II)?
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The CAS number is 73138-26-8 and the chemical formula is Mn(C5H5)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Bis(cyclopentadienyl)manganese(II) with an assay of 97%. TSS does not represent this product as USP, BP, EP or other pharmacopoeial grades.
How should Bis(cyclopentadienyl)manganese(II) be handled?
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Bis(cyclopentadienyl)manganese(II) is a flammable solid and causes skin, eye, and respiratory irritation. Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, in a well-ventilated area. Keep away from heat, sparks, and open flames.
How is Bis(cyclopentadienyl)manganese(II) packed and shipped?
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This product is classified under UN 1325, Class 4.1, Packing Group II. It is carefully packed and exported by Tech Serve Solutions in compliance with all relevant transportation regulations.
How can I request a quote or sample of Bis(cyclopentadienyl)manganese(II)?
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To request a quote or sample of Bis(cyclopentadienyl)manganese(II), please contact our sales team through the website or by phone, providing your specific requirements.
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