Synthesis and characterization of the samarium-cobalt complexes (C/sub 5/Me/sub 5/)/sub 2/(THE)SmCo(CO)/sub 4/ and (SmI/sub 2/(THF)/sub 5/)(Co(CO)/sub 4/): X-ray crystal structure of a seven-coordinate samarium(III) cation complex
Journal Article
·
· Inorg. Chem.; (United States)
Co/sub 2/(CO)/sub 8/ reacts with the divalent samarium complexes (C/sub 5/Me/sub 5/)/sub 2/Sm(THF)/sub 2/ and SmI/sub 2/(THF)/sub x/ to form (C/sub 5/Me/sub 5/)/sub 2/(THF)SmCo(CO)/sub 4/ and (SmI/sub 2/(THF)/sub 5/)(Co(CO)/sub 4/), respectively. Co/sub 2/(CO)/sub 8/ reacts with ((C/sub 5/Me/sub 5/)SmI(THF)/sub 2/)/sub 2/ to form a complex that disproportionates to (C/sub 5/Me/sub 5/)/sub 2/(THF)SmCo(CO)/sub 4/ and (SmI/sub 2/(THF)/sub 5/)(Co(CO)/sub 4/). The latter complex crystallizes from THF in the triclinic space group P1 with unit cell dimensions a = 8.829 (4) A, b = 12.965 (4) A, c = 14.740 (5) A, ..cap alpha.. = 88.48 (3)/sup 0/, ..beta.. = 81.63 (3)/sup 0/, ..gamma.. = 87.51 (3)/sup 0/, and Z = 2 for D/sub calcd/ = 1.86 g cm/sup -3/. The complex exists as discrete SmI/sub 2/(THF)/sub 5//sup +/ cations and Co(CO)/sub 4//sup -/ anions with no Sm-O-Co isocarbonyl linkage. The coordination geometry around the samarium atom is roughly pentagonal bipyramidal with the iodide atoms at the two apical positions (Sm-I) distances 3.030 (2) and 3.009 (2) A). The Sm-O(THF) distances vary from 2.44 (1) to 2.47 (1) A. The Co(CO)/sub 4//sup -/ anion has a tetrahedral geometry. 41 references, 1 figure, 4 tables.
- Research Organization:
- Univ. of California, Irvine
- OSTI ID:
- 5956760
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 24:26; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ANIONS
BOND ANGLE
BOND LENGTHS
CARBONYLS
CATIONS
CHARGED PARTICLES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COBALT COMPLEXES
COBALT COMPOUNDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
EXPERIMENTAL DATA
INFORMATION
IONS
LATTICE PARAMETERS
LENGTH
MOLECULAR STRUCTURE
NUMERICAL DATA
RARE EARTH COMPLEXES
SAMARIUM COMPLEXES
SCATTERING
SPACE GROUPS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
360601 -- Other Materials-- Preparation & Manufacture
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ANIONS
BOND ANGLE
BOND LENGTHS
CARBONYLS
CATIONS
CHARGED PARTICLES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COBALT COMPLEXES
COBALT COMPOUNDS
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
EXPERIMENTAL DATA
INFORMATION
IONS
LATTICE PARAMETERS
LENGTH
MOLECULAR STRUCTURE
NUMERICAL DATA
RARE EARTH COMPLEXES
SAMARIUM COMPLEXES
SCATTERING
SPACE GROUPS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION