123726-13-6

Basic information

• Product Name: {{tris(2-(diphenylphosphino)ethyl)phosphine}Rh}2Te₂
• CAS NO: 123726-13-6
• Molecular Weight: 1802.39
• Mol File: 123726-13-6.mol

Chemical Properties

• CAS DataBase Reference: {{tris(2-(diphenylphosphino)ethyl)phosphine}Rh}2Te₂(CAS DataBase Reference)
• NIST Chemistry Reference: {{tris(2-(diphenylphosphino)ethyl)phosphine}Rh}2Te₂(123726-13-6)
• EPA Substance Registry System: {{tris(2-(diphenylphosphino)ethyl)phosphine}Rh}2Te₂(123726-13-6)

Safety Data

• Hazardous Substances Data: 123726-13-6(Hazardous Substances Data)

Upstream product

• 14683-12-6 tellurium 
• 12092-47-6 di-μ-chloro-bis(1,5-cyclooctadiene)dirhodium 
• 14104-20-2 silver tetrafluoroborate 
• 23582-03-8 tris(2-diphenylphosphinoethyl)phosphine 

Relevant articles and documents

Synthesis and structure of dirhodium compounds featuring an end-on-bridging ditellurium

The reaction of a polytellurides solution with (np3)Rh and (pp3)Rh cationic species [np3 = tris(2-(diphenylphosphino)ethyl)amine, N(CH2CH2PPh2)3; pp3 = tris(2-(diphenylphosphino)ethyl)phosphine, P(CH2CH2PPh2)3] yields the compounds [LRh]2Te2·THF [L = np3 (1), pp3 (2); THF = tetrahydrofuran]; the pp3 derivative crystallizes also without solvent: [(pp3)Rh]2Te2 (3). The polytellurides solution is easily prepared by reducing tellurium in aprotic solvents. The crystal structures of 1-3 were elucidated through complete X-ray analyses. The isomorphous compounds 1 and 2 crystallize in the monoclinic space group P21/n with Z = 2 and the following lattice constants: (1) a = 13.532 (4) A?, b = 19.669 (6) A?, c = 14.492 (9) A?, β = 91.89 (7)°; (2) a = 13.598 (9) A?, b = 20.243 (6) A?, c = 14.492 (5) A?, β = 92.55 (4)°. Compound 3 is triclinic P1, with a = 13.543 (2) A?, b = 13.716 (3) A?, c = 13.370 (4) A?, α = 111.65 (2)°, β = 95.62 (2)°, γ = 119.05 (2)°, and Z = 1. All complexes contain a Te2 unit end-on bound to two rhodium-ligand fragments forming a zigzag Rh-Te-Te-Rh chain. The isomorphous compounds 1 and 2 exhibit essentially identical [2.691 (2) A?] Te-Te distances. Changes in packing between the former compounds and 3 result in an appreciable change in that distance, which lengthens to 2.760 (1) A?.