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 04:00:00 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), Journal Name: Inorganic Chemistry; (United States) Vol. 33:8; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

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