75790-39-5

Basic information

• Product Name: Rh₂⁽⁴⁺⁾*4O₂CC₂H₅^(1-)*C₆(CH₃)4(NH₂)2=Rh₂(O₂CC₂H₅)4(C₆(CH₃)4(NH₂)2)
• CAS NO: 75790-39-5
• Molecular Weight: 662.347
• Mol File: 75790-39-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Rh₂⁽⁴⁺⁾*4O₂CC₂H₅^(1-)*C₆(CH₃)4(NH₂)2=Rh₂(O₂CC₂H₅)4(C₆(CH₃)4(NH₂)2)(CAS DataBase Reference)
• NIST Chemistry Reference: Rh₂⁽⁴⁺⁾*4O₂CC₂H₅^(1-)*C₆(CH₃)4(NH₂)2=Rh₂(O₂CC₂H₅)4(C₆(CH₃)4(NH₂)2)(75790-39-5)
• EPA Substance Registry System: Rh₂⁽⁴⁺⁾*4O₂CC₂H₅^(1-)*C₆(CH₃)4(NH₂)2=Rh₂(O₂CC₂H₅)4(C₆(CH₃)4(NH₂)2)(75790-39-5)

Safety Data

• Hazardous Substances Data: 75790-39-5(Hazardous Substances Data)

Upstream product

• 31126-81-5 rhodium(II) propionate 
• 3102-87-2 tetramethyl-p-phenylenediamine 

Relevant articles and documents

Molecular and chain structures of four tetrakis(μ-propionato)-dirhodium(II) complexes with axial nitrogen-donor ligands

Four adducts of Rh2(O2CC2H5)4 have been prepared with various axial nitrogen-donor ligands and their structures determined from single-crystal X-ray diffraction data. The complexes include Rh2(O2CC2H5)4(ACR) 2 (1), Rh2(O2CC2H5)4(AZA) 2 (2), Rh2(O2CC2H5)4(PHZ) (3), and Rh2(O2CC2H5)4(DDA) (4), where ACR = acridine, AZA = 7-azaindole, PHZ = phenazine, and DDA = 2,3,5,6-tetramethyl-p-phenylenediamine (durenediamine). The structures were refined to final R1 values of 0.046, 0.045, 0.035, and 0.038 for 1-4, respectively. Compound 1 crystallizes in the space group P1 with a unit cell of dimensions a = 8.332 (2) ?, b = 10.008 (2) ?, c = 11.328 (4) ?, α = 109.60 (2)°, β = 100.15 (3)°, γ = 97.21 (2)°, and Z = 1. Crystals of 2 are orthorhombic, space group Pbca, with a = 20.110 (2) ?, b = 20.040 (2) ?, c = 14.224 (2) ?, and Z = 8. Compounds 1 and 2 are 1:2 adducts with Rh-Rh distances of 2.417 (1) and 2.403 (1) ? and axial Rh-N bond lengths of 2.413 (3) and 2.275 (6) ? (average), respectively. The 7-azaindole ligand in 2 coordinates through the pyridine nitrogen atom. Compound 3 crystallizes in the space group P1 with one formula weight in a unit cell of dimensions a = 8.744 (1) ?, b = 9.092 (3) ?, c = 8.316 (2) ?, α = 111.82 (2)°, β = 90.14 (1)°, and γ = 82.24 (2)°. Crystals of 4 are also triclinic, space group P1, with a = 8.922 (3) ?, b = 9.092 (3) ?, c = 8.316 (2) ?, α = 104.44 (2)°, β = 101.02 (2)°, γ = 84.70 (2)°, and Z = 1. Both compounds 3 and 4 crystallize as 1:1 adducts with the Rh2(O2CC2H5)4 units linked by the bidentate bases into one-dimensional chains. The chains of 3 have Rh-Rh and Rh-N distances of 2.409 (1) and 2.362 (4) ?, respectively, and are nearly linear with a Rh-Rh-N angle of 174.71 (9)°. Compound 4 has a Rh-Rh distance of 2.387 (1) ?. The DDA molecules coordinate to the Rh2(O2CC2H5)4 units with Rh-N bond distances of 2.324 (6) ? and a Rh′-Rh-N angle of 175.3 (2)°. The distorted tetrahedral geometry about the coordinated NH2 groups (Rh-N-C angle = 118.8 (4)°) imparts a zigzag structure to the chains in 4.