Dimeric structure of di-tert-butylphosphinic acid
Journal Article
·
· J. Am. Chem. Soc.; (United States)
The molecular structure of di-tert-butylphosphinic acid, ((CH/sub 3/)/sub 3/C)/sub 2/PO(OH), as determined by single-crystal x-ray methods, is the first observed distinct dimeric R/sub 2/PO(OH) compound with two acid molecules linked through a centrosymmetric configuration. The molecule crystallizes in the monoclinic space group, P2/sub 1//c with cell parameters a = 8.973 (6) A, b = 13.130 (9) A, c = 10.539 (7) A, ..beta.. = 117.95 (3)/sup 0/, and Z = 4. The structure was solved and refined using 999 independent three-dimensional Mo K..cap alpha.. x-ray data collected with an automated diffractometer. Full-matrix least-squares refinement of 620 observations for which F/sub 0/ > 3 sigma (F/sub 0/) led to R/sub F/ = 0.059. The discrete dimer which was found contains strong, 2.506 (18) A, hydrogen bonds, in which the oxygen atoms of O--H--O are not related by a crystallographic symmetry element. The eight-membered, hydrogen bonded ring has 1 site symmetry and shows a small chair-conformation distortion from planarity. The P--O bond lengths are 1.521 (8) and 1.520 (6) A which indicates that the oxygen atoms are essentially equivalent. There appear to be weak C--H--O interactions which fix the methyl group orientations to give an overall eclipsed conformation.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 7353306
- Journal Information:
- J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 98:16; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
·
Sun Oct 31 23:00:00 EST 1976
· Inorg. Chem.; (United States)
·
OSTI ID:7234522
Solvent-extraction complexes of the uranyl ion. 1. Crystal and molecular structure of bis(nitrato)bis(tri-n-butylphosphine oxide)dioxouranium(VI)
Journal Article
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Sat Oct 31 23:00:00 EST 1981
· Inorg. Chem.; (United States)
·
OSTI ID:5948088
EXTRACTION OF NITRIC ACID BY DERIVATIVES OF BUTYLPHOSPHINIC ACIDS
Journal Article
·
Tue Jul 21 00:00:00 EDT 1959
· Doklady Akad. Nauk S.S.S.R.
·
OSTI ID:4228072
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
BOND ANGLE
BOND LENGTHS
COHERENT SCATTERING
DIFFRACTION
DIMERS
ELEMENTS
METALS
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANOPHOSPHINIC ACIDS
RARE EARTHS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
X-RAY DIFFRACTION
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
BOND ANGLE
BOND LENGTHS
COHERENT SCATTERING
DIFFRACTION
DIMERS
ELEMENTS
METALS
MOLECULAR STRUCTURE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANOPHOSPHINIC ACIDS
RARE EARTHS
SCATTERING
STRUCTURAL CHEMICAL ANALYSIS
X-RAY DIFFRACTION