Pentamethyl tantalum

Base Information

• Chemical Name: Pentamethyl tantalum
• CAS No.: 53378-72-6
• Molecular Formula: C₅H₁₅Ta
• Molecular Weight: 256.122
• DSSTox Substance ID: DTXSID90968024
• Wikipedia: Pentamethyltantalum
• Mol file: 53378-72-6.mol

Synonyms:Pentamethyltantalum;Pentamethyl tantalum;53378-72-6;Ta(CH3)5;DTXSID90968024

Chemical Property of Pentamethyl tantalum

Chemical Property:

• Vapor Pressure: 205000mmHg at 25°C
• Melting Point: 0°C
• PSA: 0.00000
• LogP: 2.91900
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 0
• Exact Mass: 256.06537
• Heavy Atom Count: 6
• Complexity: 3.9

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: [CH3-].[CH3-].[CH3-].[CH3-].[CH3-].[Ta+5]

Technology Process of Pentamethyl tantalum

There total 2 articles about Pentamethyl tantalum which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 41.0%

methyllithium (917-54-4) + tantalum pentachloride (7721-01-9) → Pentamethyltantal (53378-72-6,145841-52-7)

Guidance literature:

In pentane; at -30 - 10 ℃; for 2h; Inert atmosphere; Schlenk technique; Glovebox;

DOI:10.1021/ja5113468

Reference yield:

→ Pentamethyltantal (53378-72-6,145841-52-7)

Guidance literature:

Ta(CH3)3Cl2 (II), MeLi;

DOI:10.1016/S0022-328X(00)80612-9

Reference yield: 99.0%

pentamethyl tantalum (145841-52-7,53378-72-6) + N,N’’-bis(pentafluorophenyl)diethylenetriamine → [(C6F5NCH2CH2)2NH]Ta(CH3)3 (205517-64-2)

Guidance literature:

In diethyl ether; N2-atmosphere; addn. of triamine at -35°C to 1 equiv. TaMe5, stirring at room temp. for 10 min; filtration (Celite), solvent removal (vac.); elem. anal.;

DOI:10.1016/s0020-1693(97)05869-6

upstream raw materials:

methyllithium

tantalum pentachloride

Downstream raw materials:

[(C₆F₅NCH₂CH₂)2NH]Ta(CH₃)3

Refernces