Coordination geometries of solvated lanthanide(II) ions: Molecular structures of the cationic species [(DIME)[sub 3]Ln][sup 2+] (DIME = diethylene glycol dimethyl ether; Ln[sup 2+] = Sm, Yb), [(DIME)[sub 2]Yb(CH[sub 3]CN)[sub 2]][sup 2+], [(DIME)Yb(CH[sub 3]CN)[sub 5]][sup 2+], and [(C[sub 5]H[sub 5]N)[sub 5]Yb(CH[sub 3]CN)[sub 2]][sup 2+]

Journal Article · Wed Apr 13 00:00:00 EDT 1994 · Inorganic Chemistry; (United States)

DOI:https://doi.org/10.1021/ic00086a019· OSTI ID:7243068

White, III, J P; Deng, H; Boyd, E P; Gallucci, J; Shore, S G ^[1]

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1. Ohio State Univ., Columbus, OH (United States)

The first lanthanide(II) cationic species with coordination numbers 7,8, and 9 have been structurally characterized. Mercury amalgams of the elemental lanthanides (Ln(Hg) where Ln = Sm, Eu, Yb) cleanly reduce Mn[sub 2](CO)[sub 10] and Co[sub 2](CO)[sub 8] in polydentate ethers to [Mn(CO)[sub 5]][sup [minus]] and [Co(CO)[sub 4]][sup [minus]] and are oxidized to solvated Ln(II) cations. In the bidentate ether DME (DME = 1,2-dimethoxyethane), [(DME)[sub x]Sm][sup 2+] ions show some association with the metal carbonylate ions, based upon IR evidence. In the tridentate ether DIME (diethylene glycol dimethyl ether = DIME), IR data suggest that only the solvent-separated species [(DIME)[sub 3]Ln][Co(CO)[sub 4]][sub 2] (Ln: Sm = 3; Yb = 4) and [(DIME)[sub 3]Ln][Mn(CO)[sub 5]][sub 2] (Ln: Sm = 5; Yb = 6; Eu = 7) are formed. Structural characterizations confirm the presence of discrete [(DIME)[sub 3]Sm][sup 2+] and [(DIME)[sub 3]Yb][sup 2+] ions in 3 and 4, in which the DIME oxygens form a 9-coordinate tricapped trigonal prismatic geometry about Ln(II).

• OSTI ID: 7243068
• Journal Information: Inorganic Chemistry; (United States), Vol. 33:8; ISSN 0020-1669
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
SAMARIUM COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
YTTERBIUM COMPLEXES
ABSORPTION SPECTROSCOPY
CATIONS
COORDINATION NUMBER
CRYSTAL STRUCTURE
ETHERS
X-RAY DIFFRACTION
CHARGED PARTICLES
COHERENT SCATTERING
COMPLEXES
DIFFRACTION
IONS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RARE EARTH COMPLEXES
SCATTERING
SPECTROSCOPY
400201* - Chemical & Physicochemical Properties