18923-27-8

Basic information

• Product Name: ytterbium(3+)
• CAS NO: 18923-27-8
• Molecular Formula: Yb
• Molecular Weight: 173.0384
• Mol File: 18923-27-8.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: ytterbium(3+)(CAS DataBase Reference)
• NIST Chemistry Reference: ytterbium(3+)(18923-27-8)
• EPA Substance Registry System: ytterbium(3+)(18923-27-8)

Safety Data

• Hazardous Substances Data: 18923-27-8(Hazardous Substances Data)

Upstream product

• 128703-73-1 Yb⁽³⁺⁾*C₁₂H₂₆O₄N₂={Yb(C₁₂H₂₆O₄N₂)}⁽³⁺⁾ 
• 73592-95-7 Yb⁽³⁺⁾*C₁₆H₃₂O₅N₂={Yb(C₁₆H₃₂O₅N₂)}⁽³⁺⁾ 
• 71514-17-5 Yb⁽³⁺⁾*C₁₈H₃₆O₆N₂={Yb(C₁₈H₃₆O₆N₂)}⁽³⁺⁾ 

Downstream Products

• 14947-76-3 Yb⁽³⁺⁾*OOCCH₂(OOCCH₂)NCH₂CH₂N(CH₂COO)2^(4-)=Yb(OOCCH₂)2NCH₂CH₂N(CH₂COO)2^(1-) 

Relevant articles and documents

Thermodynamic and Electrochemical Behaviour of Lanthanide Cryptates in N,N-Dimethylformamide

The stability of 222 (L1), 221 (L2), 211 (L3) cryptates of samarium(III), europium(III), and ytterbium(III) and the corresponding complexes with the related monocycle, 22 (L4) have been determined in N,N-dimethylformamide by potentiometry using a competitive method with auxiliary alkali cations.Their electrochemical behaviour has also been investigated in the same solvent by polarography and cyclic voltammetry.The results clearly show the low stability of the trivalent cryptates.The electrochemical study of Ln(3+) ions with increasing amounts of ligand shows two different behaviours: (i) with L3, Ln(3+) ions are complexed as shown by the decrease of the reduction waves of Ln(3+) but no stabilization of Ln(2+) is observed; (ii) with L1, L2, and L4 the height of the reduction wave of Ln(3+) is not affected by the ligand concentration and the reduction occurs according to the scheme: Ln(3+) + e(1-) Ln(2+) + L -> (2+).The differences δ between the redox potentials of the free and the complexed lanthanide(III) cations show an important stabilization of the divalent cryptates.Their stability constants have been calculated from the values of δ and the stability constants of trivalent complexes.While no particular ligand or cation selectivity is observed for the trivalent cryptates, this is not so for the reduced lanthanides which form the strongest complexes with L1.The results are interpreted by size and solvation considerations.

Acid Solvolysis Kinetics of Lanthanide Porphyrins

The kinetics of the acid solvolysis reactions of twelve water-soluble lanthanide tetrakis(N-methyl-4-pyridyl)porphyrins (Ln-P) follow rate = k1+>2/ (k-1/k2) + +>> at 25 deg C, I = 0.8M (LiNO3/HNO3) indicating that two protons are required for solvolysis, and since log (k1k2/k-1) = 45.0R0 - 39.4 (R0 is the ionic radius in Angstroem), a 0.1 Angstroem change in radius has a 32000 fold rate effect.