1422451-02-2

Basic information

• Product Name: [Yb(N,N'-bis(2,6-diisopropylphenyl)formamidine)2Br(thf)]·Et2O
• CAS NO: 1422451-02-2
• Molecular Weight: 1126.31
• Mol File: 1422451-02-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [Yb(N,N'-bis(2,6-diisopropylphenyl)formamidine)2Br(thf)]·Et2O(CAS DataBase Reference)
• NIST Chemistry Reference: [Yb(N,N'-bis(2,6-diisopropylphenyl)formamidine)2Br(thf)]·Et2O(1422451-02-2)
• EPA Substance Registry System: [Yb(N,N'-bis(2,6-diisopropylphenyl)formamidine)2Br(thf)]·Et2O(1422451-02-2)

Safety Data

• Hazardous Substances Data: 1422451-02-2(Hazardous Substances Data)

Upstream product

• 109-99-9 tetrahydrofuran 
• 60-29-7 diethyl ether 
• 17048-08-7 bis(2-bromo-3,4,5,6-tetrafluorophenyl)mercury 
• 1176938-29-6 N,N'-di(2,6-diisopropylphenyl)formamidine 
• 1074-91-5 1-bromo-2,3,4,5-tetrafluorobenzene 

Relevant articles and documents

Synthesis, structures and reactivity of lanthanoid(II) formamidinates of varying steric bulk

New reactive, divalent lanthanoid formamidinates [Yb(Form) 2(thf)2] (Form=[RNCHNR]; R=o-MeC6H4 (o-TolForm; 1), 2,6-Me2C6H3 (XylForm; 2), 2,4,6-Me3C6H2 (MesForm; 3), 2,6-Et 2C6H3 (EtForm; 4), o-PhC6H 4 (o-PhPhForm; 5), 2,6-iPr2C6H3 (DippForm; 6), o-HC6F4 (TFForm; 7)) and [Eu(DippForm) 2(thf)2] (8) have been prepared by redox transmetallation/protolysis reactions between an excess of a lanthanoid metal, Hg(C6F5)2 and the corresponding formamidine (HForm). X-ray crystal structures of 2-6 and 8 show them to be monomeric with six-coordinate lanthanoid atoms, chelating N,N′-Form ligands and cis-thf donors. However, [Yb(TFForm)2(thf)2] (7) crystallizes from THF as [Yb(TFForm)2(thf)3] (7 a), in which ytterbium is seven coordinate and the thf ligands are pseudo-meridional . Representative complexes undergo C-X (X=F, Cl, Br) activation reactions with perfluorodecalin, hexachloroethane or 1,2-dichloroethane, and 1-bromo-2,3,4,5-tetrafluorobenzene, giving [Yb(EtForm)2F]2 (9), [Yb(o-PhPhForm)2F]2 (10), [Yb(o-PhPhForm) 2Cl(thf)2] (11), [Yb(DippForm)2Cl(thf)] (12) and [Yb(DippForm)2Br(thf)] (16). X-ray crystallography has shown 9 to be a six-coordinate, fluoride-bridged dimer, 12 and 16 to be six-coordinate monomers with the halide and thf ligands cis to each other, and 11 to have a seven-coordinate Yb atom with pseudo-meridional unidentate ligands and thf donors cis to each other. The analogous terbium compound [Tb(DippForm)2Cl(thf)2] (13), prepared by metathesis, has a similar structure to 11. C-Br activation also accompanies the redox transmetallation/protolysis reactions between La, Nd or Yb metals, Hg(2-BrC 6F4)2, and HDippForm, yielding [Ln(DippForm)2Br(thf)] complexes (Ln=La (14), Nd (15), Yb (16)). Copyright