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Title: Interaction of hydrogen and hydrocarbons with transition metals. Neutron diffraction study of di-. mu. -hydrido-decacarbonyltriosmium, (. mu. -H)/sub 2/Os/sub 3/(CO)/sub 10/, containing a four-center, four-electron H/sub 2/Os/sub 2/ bond

Abstract

The low-temperature crystal and molecular structure of (..mu..-H)/sub 2/Os/sub 3/(CO)/sub 10/ has been determined by neutron diffraction techniques. Lattice parameters at 110/sup 0/K for the centrosymmetric triclinic space group P1 are a = 8.499(4)A, b = 9.029(4)A, c = 11.714(5)A, ..cap alpha.. = 91.59(1)/sup 0/, ..beta.. = 98.98(2)/sup 0/, ..gamma.. = 117.33(2)/sup 0/, and V = 783.7A/sup 3/. The triosmium fragment may be viewed as forming an isosceles triangle with one short and two long metal--metal distances. The short osmium--osmium bond, which is symmetrically bridged by the two hydrogen atoms, has a length of 2.683(1)A, while the two long nonbridged bonds have equal lengths of 2.814(1) and 2.815(1)A. The mean osmium--hydrogen bond distance is 1.845(3)A. A bonding scheme is presented which supports the formulation of the metal--hydrogen interaction as a four-center, four-electron bond. 4 figures, 5 tables.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab., IL
OSTI Identifier:
6169293
Resource Type:
Journal Article
Journal Name:
Inorg. Chem.; (United States)
Additional Journal Information:
Journal Volume: 18:2
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HYDROCARBONS; CONFIGURATION MIXING; HYDROGEN; OSMIUM COMPLEXES; STRUCTURAL CHEMICAL ANALYSIS; TRANSITION ELEMENTS; BOND ANGLE; CRYSTAL STRUCTURE; INTERATOMIC DISTANCES; LATTICE PARAMETERS; LOW TEMPERATURE; MOLECULAR STRUCTURE; NEUTRON DIFFRACTION; TEMPERATURE DEPENDENCE; TRICLINIC LATTICES; COHERENT SCATTERING; COMPLEXES; CRYOGENIC FLUIDS; CRYSTAL LATTICES; DIFFRACTION; DISTANCE; ELEMENTS; FLUIDS; INTERACTIONS; METALS; NONMETALS; ORGANIC COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPLEXES; 400201* - Chemical & Physicochemical Properties

Citation Formats

Broach, R.W., and Williams, J.M. Interaction of hydrogen and hydrocarbons with transition metals. Neutron diffraction study of di-. mu. -hydrido-decacarbonyltriosmium, (. mu. -H)/sub 2/Os/sub 3/(CO)/sub 10/, containing a four-center, four-electron H/sub 2/Os/sub 2/ bond. United States: N. p., 1979. Web. doi:10.1021/ic50192a021.
Broach, R.W., & Williams, J.M. Interaction of hydrogen and hydrocarbons with transition metals. Neutron diffraction study of di-. mu. -hydrido-decacarbonyltriosmium, (. mu. -H)/sub 2/Os/sub 3/(CO)/sub 10/, containing a four-center, four-electron H/sub 2/Os/sub 2/ bond. United States. doi:10.1021/ic50192a021.
Broach, R.W., and Williams, J.M. Thu . "Interaction of hydrogen and hydrocarbons with transition metals. Neutron diffraction study of di-. mu. -hydrido-decacarbonyltriosmium, (. mu. -H)/sub 2/Os/sub 3/(CO)/sub 10/, containing a four-center, four-electron H/sub 2/Os/sub 2/ bond". United States. doi:10.1021/ic50192a021.
@article{osti_6169293,
title = {Interaction of hydrogen and hydrocarbons with transition metals. Neutron diffraction study of di-. mu. -hydrido-decacarbonyltriosmium, (. mu. -H)/sub 2/Os/sub 3/(CO)/sub 10/, containing a four-center, four-electron H/sub 2/Os/sub 2/ bond},
author = {Broach, R.W. and Williams, J.M.},
abstractNote = {The low-temperature crystal and molecular structure of (..mu..-H)/sub 2/Os/sub 3/(CO)/sub 10/ has been determined by neutron diffraction techniques. Lattice parameters at 110/sup 0/K for the centrosymmetric triclinic space group P1 are a = 8.499(4)A, b = 9.029(4)A, c = 11.714(5)A, ..cap alpha.. = 91.59(1)/sup 0/, ..beta.. = 98.98(2)/sup 0/, ..gamma.. = 117.33(2)/sup 0/, and V = 783.7A/sup 3/. The triosmium fragment may be viewed as forming an isosceles triangle with one short and two long metal--metal distances. The short osmium--osmium bond, which is symmetrically bridged by the two hydrogen atoms, has a length of 2.683(1)A, while the two long nonbridged bonds have equal lengths of 2.814(1) and 2.815(1)A. The mean osmium--hydrogen bond distance is 1.845(3)A. A bonding scheme is presented which supports the formulation of the metal--hydrogen interaction as a four-center, four-electron bond. 4 figures, 5 tables.},
doi = {10.1021/ic50192a021},
journal = {Inorg. Chem.; (United States)},
number = ,
volume = 18:2,
place = {United States},
year = {1979},
month = {2}
}