105164-42-9

Basic information

• Product Name: Rh₂(N,N'-di-p-tolylformamidinate)2(trifluoroacetate)2(pyridine)2
• CAS NO: 105164-42-9
• Molecular Weight: 1036.64
• Mol File: 105164-42-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Rh₂(N,N'-di-p-tolylformamidinate)2(trifluoroacetate)2(pyridine)2(CAS DataBase Reference)
• NIST Chemistry Reference: Rh₂(N,N'-di-p-tolylformamidinate)2(trifluoroacetate)2(pyridine)2(105164-42-9)
• EPA Substance Registry System: Rh₂(N,N'-di-p-tolylformamidinate)2(trifluoroacetate)2(pyridine)2(105164-42-9)

Safety Data

• Hazardous Substances Data: 105164-42-9(Hazardous Substances Data)

Upstream product

• 105164-41-8 Rh₂(N,N'-di-p-tolylformamidinate)2(trifluoroacetate)2(H₂O)2*0.5benzene 

Relevant articles and documents

Chemical oxidation of binuclear rhodium(I) complexes with silver salts. Synthesis, X-ray crystal structure, and electrochemical properties of the Rh24+ mixed-ligand complex Rh2(Form)2(O2CCF3) 2(H2O)2·0.5C6H6 (form = N,N′-Di-p-tolylformamidinate anion)

The facile chemical oxidation of the binuclear rhodium(I) formamidinate complex [Rh(C8H12)(Form)]2 (Form = [p-CH3C6H4NC(H)NC6H 4CH3-p]-) with AgO2CCF3 (mole ratio 1:4) yields the mixed-ligand Rh24+ complex Rh2(Form)2-(O2CCF3) 2(H2O)2. The complex reacts with Lewis bases such as pyridine, dimethyl sulfoxide, piperidine, and 4-methylimidazole to produce stable 1:2 axial adducts. The crystal structure has been determined by X-ray diffraction analysis. The green crystals are triclinic, space group P1, with a = 10.467 (1) ?, b = 13.151 (1) ?, c = 15.470 (2) ?, α = 70.68 (2)°, β = 88.89 (4)°, γ = 79.16 (3)°, V = 1971.6 ?3, Z = 2, Dcalcd = 1.609 g cm-3, R = 0.032, and Rw = 0.034. The molecule consists of two formamidinate and two trifluoroacetate groups symmetrically disposed about the Rh-Rh unit in the conventional fashion. Two water molecules are axially bonded at 2.315 (3) ? from the rhodium atoms. The striking features of the structure are the lengthening of the Rh-Rh (2.425 (1) ?) and Rh-Oeq (2.082 (3) ?) bond distances with respect to the analogous Rh2(O2CCF3)4(H2O) 2·2DTBN and the cisoid arrangement of the formamidinate groups. The Rh-Rh-Oax angles deviate significantly from linearity (167.9 (1) and 169.3 (1)°) as a consequence of steric interactions between the tolyl fragments and the water molecules that participate in hydrogen-bonding interactions throughout the crystal lattice. The electrochemistry in different nonaqueous solvents points out the ability of the title complex to undergo two subsequent one-electron reversible or quasi-reversible anodic processes, attributable to the RhIIRhII/RhIIRhIII and RhIIRhIII/RhIIIRhIII charge transfers, respectively. As expected, these anodic processes are easier than in the case of the corresponding tetracarboxylato species. Of the two electrogenerable anodic products, only the mixed-valence RhIIRhIII derivative is fully stable, and its stability has been quantitatively evaluated and discussed also with respect to that of the other dirhodium complexes.