Coordinately unsaturated metal clusters. A neutron diffraction study of the crystal and molecular structure of the trimeric rhodium complex (HRh(P(OCH/sub 3/)/sub 3/)/sub 2/)/sub 3/
Journal Article
·
· Inorg. Chem.; (United States)
- Argonne National Lab., IL
The molecular strcutre of (HRh(P(OCH/sub 3/)/sub 3/)/sub 2/)/sub 3/ has been determined by using neutron diffraction techniques (T = 110 K). The trimeric rhodium complex is monoclinic, space group P2/sub 1/(C/sub 2//sup 2/, No. 4), with a = 10.792 (6) A, b = 13.438 (8) A, c = 13.438 (8) A, ..beta.. = 91.64 (4)/sup 0/, V/sub c/ = 1948.02 A/sup 3/, and d/sub calcd/ = 1.801 g cm/sup -3/ for Z = 2. The neutral molecule consists of a triangular array of Rh atoms each bonded in an approximately square-planar fashion to two terminal P(OCH/sub 3/)/sub 3/ groups and two bridging hydride ligands. The Rh-Rh separations involving single hydrogen bridges are 2.803 (7), 2.780 (6), and 2.856 (8) A and the average Rh-H/sub b/ distance is 1.76 (3) A. The bridging Rh-H/sub b/ separations reported here are the first interactions to be characterized structurally with neutron crystallographic techniques (T = 110 K). A discussion of the origin of the structural distortion from planarity of the (HRhP/sub 2/)/sub 3/ cluster core is presented. 4 figures, 3 tables.
- OSTI ID:
- 5313678
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 19:2; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Tue Dec 31 23:00:00 EST 1985
· J. Coord. Chem.; (United States)
·
OSTI ID:5533084
Crystal structure of (HRh(P(O-i-C/sub 3/H/sub 7/)/sub 3/)/sub 2/)/sub 2/: a neutron diffraction study
Journal Article
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Mon Jun 01 00:00:00 EDT 1981
· Inorg. Chem.; (United States)
·
OSTI ID:6342129
Synthesis and X-ray and neutron structures of anti-[L[sub 2]Rh[sub 2](H)[sub 2]](PF[sub 6])[sub 2] (L = 1,4,7-trimethyl-1,4,7-triazacyclononane) and a related species containing a syn-[Rh[sub 2](H)[sub 2]([mu]-H)[sub 2]][sup 2+] core. Isolation of [L[sub 2]Fe[sub 2]([mu]-H)[sub 3]]BPh[sub 4]
Journal Article
·
Wed Sep 29 00:00:00 EDT 1993
· Inorganic Chemistry; (United States)
·
OSTI ID:5078746
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
BINDING ENERGY
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
DIFFRACTION
ENERGY
HYDRIDES
HYDROGEN COMPOUNDS
LIGANDS
MOLECULAR STRUCTURE
NEUTRON DIFFRACTION
RHODIUM COMPLEXES
RHODIUM COMPOUNDS
RHODIUM HYDRIDES
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
400201* -- Chemical & Physicochemical Properties
BINDING ENERGY
COHERENT SCATTERING
COMPLEXES
CRYSTAL STRUCTURE
DIFFRACTION
ENERGY
HYDRIDES
HYDROGEN COMPOUNDS
LIGANDS
MOLECULAR STRUCTURE
NEUTRON DIFFRACTION
RHODIUM COMPLEXES
RHODIUM COMPOUNDS
RHODIUM HYDRIDES
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS