85233-91-6

Basic information

• Product Name: tris(2-diphenylphosphanylethyl)aminerhodium(I) hydride
• Synonyms: tris(2-diphenylphosphanylethyl)aminerhodium(I) hydride
• CAS NO: 85233-91-6
• Molecular Weight: 757.637
• Mol File: 85233-91-6.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: tris(2-diphenylphosphanylethyl)aminerhodium(I) hydride(CAS DataBase Reference)
• NIST Chemistry Reference: tris(2-diphenylphosphanylethyl)aminerhodium(I) hydride(85233-91-6)
• EPA Substance Registry System: tris(2-diphenylphosphanylethyl)aminerhodium(I) hydride(85233-91-6)

Safety Data

• Hazardous Substances Data: 85233-91-6(Hazardous Substances Data)

Upstream product

• 115590-83-5 {(NP₃)RhH₂}BPh₄ 
• 591-51-5 phenyllithium 
• 16940-66-2 sodium tetrahydroborate 
• 85233-84-7 dichlorotris(2-(diphenylphosphino)ethyl)aminerhodium(III) chloride 
• 104910-92-1 {((C₆H₅)2PCH₂CH₂)2N(CH₂CH₂P(C₆H₅)(C₆H₄))RhH}⁽¹⁺⁾*(SO₃CF₃)^(1-)={((C₆H₅)2PCH₂CH₂)2N(CH₂CH₂P(C₆H₅)(C₆H₄))RhH}(SO₃CF₃) 
• 22560-16-3 lithium triethylborohydride 

Downstream Products

• 114580-95-9 {(σ-acetylide)rhodium(I)N(CH2CH2PPh2)3} 
• 115590-83-5 {(NP₃)RhH₂}BPh₄ 
• 114900-38-8 {(NP₃)Rh(H)Ph}(SO₃CF₃) 
• 104910-92-1 {((C₆H₅)2PCH₂CH₂)2N(CH₂CH₂P(C₆H₅)(C₆H₄))RhH}⁽¹⁺⁾*(SO₃CF₃)^(1-)={((C₆H₅)2PCH₂CH₂)2N(CH₂CH₂P(C₆H₅)(C₆H₄))RhH}(SO₃CF₃) 
• 118681-60-0 {(NP₃)Rh(H)(CN)}BPh₄ 
• 118681-53-1 N(CH₂CH₂P(C₆H₅)2)3RhCN 
• 109-94-4 formic acid ethyl ester 
• 118713-50-1 {(NP₃)Rh(NCMe)}BPh₄ 
• 104910-90-9 {((C₆H₅)2PCH₂CH₂)3NRhH₂}⁽¹⁺⁾*SO₃CF₃^(1-)={((C₆H₅)2PCH₂CH₂)3NRhH₂}(SO₃CF₃) 
• 95977-40-5 ((((C₆H₅)2P)CH₂CH₂)3N)Rh(CS₂)⁽¹⁺⁾*B(C₆H₅)4^(1-)*0.5C₂H₅OH = [((((C₆H₅)2P)CH₂CH₂)3N)Rh(CS₂)][B(C₆H₅)4]*0.5C₂H₅OH 
• 95911-58-3 ((((C₆H₅)2P)CH₂CH₂)3N)Rh(HCS₂) 
• 664351-26-2 [(tris(2-diphenylphosphanylethyl)amine)Rh(P₄S₃)]CF₃SO₃ 
• 664351-26-2 [(tris(2-diphenylphosphanylethyl)amine)Rh(P₄S₃)]CF₃SO₃ 
• 124224-70-0 (N(CH₂CH₂PPh₂)3)Rh((E)-CHCHPh) 

Relevant articles and documents

Activation of 1-alkynes at 16-electron rhodium fragments. Some examples of thermodynamically favored rearrangements [M(π-HC≡CR)] → [M(H)(C≡CR)]

The 16-electron fragments [(NP3)Rh]+ and [(PP3)Rh]+ react with 1-alkynes in THF at room temperature yielding Rh(III) cis hydride acetylide complexes of formula [(L)Rh(H)(C≡CR)]BPh4 [L = NP3, N-(CH2CH2PPh2)3; L = PP3, P(CH2CH2PPh2)3; R = H, n-C3H7, Ph, SiMe3, CH2OH, CHO, CO2H, CO2Et]. The crystal structure of the ethynyl derivative [(NP3)Rh(H)(C≡CH)]BPh4·1.5THF was determined by X-ray crystallography. The metal atom in the complex cation is octahedrally coordinated by the four donor atoms of NP3, a σ-bonded ethynyl group, and a hydride ligand. Crystal data: monoclinic, space group P21/n, a = 15.769 (3) A?, b = 32.458 (6) A?, c = 13.277 (6) A?; β = 105.21 (2)°, U = 6557 (1) A?3; Z = 4. The structure was solved by Patterson and Fourier techniques and refined to an R factor of 0.079 (Rw = 0.086) by using 3735 reflections with I > 3σ(I). Decreasing the temperature to -40°C does not change the nature of the products except for the reactions with HC≡CCO2Et. In this case, the π-alkyne adducts [(L)Rh-(π-HC≡CCO2Et)]BPh4 (L = NP3, PP3) are formed which are thermodynamically unstable in ambient temperature solutions to irreversibly give the corresponding hydride acetylide derivatives. The [Rh(π-HC≡CCO2Et)] → [Rh(H)(C≡CCO2Et)] rearrangement is preceded at lower temperature by a fluxional process on the 31P NMR time scale which involves the π-alkyne species. At low temperature, also propiolic acid, HC≡CCO2H, forms with the [(NP3)Rh]+ fragments a π-alkyne complex which converts, in ambient temperature solutions, into hydride acetylide and hydride carboxylate derivatives via two independent, almost equally favored pathways. Most of the hydride acetylide complexes of rhodium(III) react with excess NaBH4 in THF/ethanol yeilding Rh(I) σ-acetylides of formula [(L)Rh(C≡CR)] (R = n-C3H7, Ph, SiMe3, CH2OH, CO2Et, CHO). No interconversion between the NP3 hydride acetylide complexes and the parent vinylidenes [(NP3)Rh{C≡C(H)(R)}]BPh4 was observed.