53749-04-5

Basic information

• Product Name: trans-[⁽⁹⁹⁾TcCl₄(PMe₂Ph)2]
• Synonyms: trans-[⁽⁹⁹⁾TcCl₄(PMe₂Ph)2]
• CAS NO: 53749-04-5
• Molecular Weight: 517.11
• Mol File: 53749-04-5.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: trans-[⁽⁹⁹⁾TcCl₄(PMe₂Ph)2](CAS DataBase Reference)
• NIST Chemistry Reference: trans-[⁽⁹⁹⁾TcCl₄(PMe₂Ph)2](53749-04-5)
• EPA Substance Registry System: trans-[⁽⁹⁹⁾TcCl₄(PMe₂Ph)2](53749-04-5)

Safety Data

• Hazardous Substances Data: 53749-04-5(Hazardous Substances Data)

Upstream product

• 672-66-2 Dimethyl(phenyl)phosphine 
• 75-77-4 chloro-trimethyl-silane 

Downstream Products

• 155145-72-5 ⁽⁹⁹⁾Tc₂Cl₄(P(CH₃)2(C₆H₅))4 

Relevant articles and documents

Technetium tetrachloride as A precursor for small technetium(IV) complexes

Polymeric technetium tetrachloride reacts with monodentate donor ligands such as THF, acetonitrile, DMSO, thioxane (1-oxa-4-thiacyclohexane), PMe 2Ph, PPh3, OPPh3, or OH2 via cleavage of the polymeric network and the formation of [TcCl4(L) 2] complexes. The configuration of the products is dependent on the donor atoms such that trans coordination is established with 'soft' donor atoms such as sulfur or phosphorus, while cis-[TcCl4(L)2] complexes are formed with the 'harder' donors oxygen or nitrogen. The ambivalent thioxane binds to technetium via the sulfur atom. The trans products are air stable and resistant to hydrolysis. The cis complexes, however, undergo stepwise hydrolysis, during which complexes of the composition [Cl3(L) 2TcOTc(L)2Cl3] (L = CH3CN, DMSO, or OH2) are formed. They are the first representatives of a new class of technetium(IV) complexes with a bridging oxo ligand. The Tc-O bond lengths in these bridges are between 1.803(1) and 1.823(2) A.