Pr[sub 12]I[sub 17]Fe[sub 2]: A novel hypostoichiometric compound with only isolated clusters
Journal Article
·
· Inorganic Chemistry; (United States)
- Iowa State Univ., Ames, IA (United States)
Reactions of the elements with PrI[sub 3] in sealed Nb containers at 860-920 [degrees]C yields Pr[sub 12]I[sub 17]Z[sub 2] for Z = Fe and Re. The new structure type was characterized for the former (P[bar 1], Z = 1, a = 11.798 (4) [angstrom], b = 11.791 (2) [angstrom], c = 9.830 (2) [angstrom], [alpha] = 114.87(2)[degrees], [beta] = 104.82(4)[degrees], [gamma] = 93.19(2)[degrees], R/R[sub w] = 3.2/3.8% for 2967 data, 143 variables). The unusually low I:Pr ratio for a phase with isolated clusters is achieved by seven I[sup i-i] bridges per cluster in which iodine simultaneously bridges metal edges in two clusters. The Z-centered Pr[sub 6]I[sub 12]-type clusters are joined into layers by three pairs of centric I[sup i-i] and (I[sup i-a]) bridges. The layers are further joined in the third direction by a unique planar I[sup i-i] plus other types of iodine bridges. The 2.75-[angstrom] Pr-Fe bonds appear to be particularly short.
- OSTI ID:
- 7165079
- 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
Similar Records
Two new examples for the unusual R{sub 12}I{sub 17}Z{sub 2}-structure type: La{sub 12}I{sub 17}Fe{sub 2} and Ce{sub 12}I{sub 17}Mn{sub 2}
Rare-earth-metal iodide clusters centered by transition metals: Synthesis, structure, and bonding of R sub 7 I sub 12 M compounds (R = Sc, Y, Pr, Gd; M = Mn, Fe, Co, Ni)
Crystal structure of Fe sub 2 Os(CO) sub 12 , a structural analogue of Fe sub 3 (CO) sub 12 with No required site symmetry and only a approx 12:1 Star of Davis disorder pattern: Example of an acentric, but close to centric, structure. Some thoughts on the solid-state structure of Fe sub 3 (CO) sub 12
Journal Article
·
Sun Sep 01 00:00:00 EDT 1996
· Journal of Solid State Chemistry
·
OSTI ID:486251
Rare-earth-metal iodide clusters centered by transition metals: Synthesis, structure, and bonding of R sub 7 I sub 12 M compounds (R = Sc, Y, Pr, Gd; M = Mn, Fe, Co, Ni)
Journal Article
·
Wed Jun 15 00:00:00 EDT 1988
· Inorganic Chemistry; (USA)
·
OSTI ID:7108174
Crystal structure of Fe sub 2 Os(CO) sub 12 , a structural analogue of Fe sub 3 (CO) sub 12 with No required site symmetry and only a approx 12:1 Star of Davis disorder pattern: Example of an acentric, but close to centric, structure. Some thoughts on the solid-state structure of Fe sub 3 (CO) sub 12
Journal Article
·
Wed Jan 31 23:00:00 EST 1990
· Organometallics; (USA)
·
OSTI ID:7030939
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ATOMIC CLUSTERS
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IRON COMPOUNDS
IRON IODIDES
MOLECULAR STRUCTURE
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM IODIDES
RARE EARTH COMPOUNDS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
400201* -- Chemical & Physicochemical Properties
ATOMIC CLUSTERS
CHEMICAL PREPARATION
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IRON COMPOUNDS
IRON IODIDES
MOLECULAR STRUCTURE
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM IODIDES
RARE EARTH COMPOUNDS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION