IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L.

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Abstract Text:

Evgenii S Stoyanov,Christopher A Reed,

The H(5)O(2)(+) ion has been studied in chlorocarbon, benzene, and weakly coordinating anion environments to bridge the gap between the gas-phase and traditional condensed-phase investigations. Symmetrical cations of the type [H(5)O(2)(+) x 4Solv] are formed via H-bonding with the terminal O-H groups. In the infrared spectrum, the nu(s)OH and nu(as)OH vibrations behave in a manner similar to those of common water molecules: the stronger is the H-bonding interaction with the surroundings, the lower is the frequency shift. A consistent pattern of IR bands from the central O-H(+)-O group is identified, regardless of the strength of the interaction of H(5)O(2)(+) with its environment. Three intense bands develop: a (860-995 cm-1), b (1045-1101 cm(-1)), and c (1672-1700 cm(-1)), as well as two weak bands, d ( approximately 1300 cm(-1)) and e ( approximately 1400-1500 cm(-1)). These fingerprint bands are highly characteristic for vibrations of O-H-O group irrespective of formal charge. They are seen in symmetrical proton disolvates of the type L-H(+)-L, where L is an O-atom donor (alcohol, ether, ketone, phosphate, etc.), and in [A-H-A](-) acid salts (A(-) = oxyanion). The commonality is equivalency of the two O-atoms, a short O...O distance (ca. 2.40 Angstrom), and a flat-bottomed potential well for the bridging proton, that is, a short, strong, low-barrier H-bond. Assignments for bands a-e are suggested in an attempt to resolve inconsistencies between experimental and calculated data.

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Publishing Authors By Initials

ES Stoyanov,CA Reed,

For similar biomechanics: vibration research abstracts see: biomechanics: vibration research

PUBMED ID PMID:

MEDLINE DATE:

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The journal of physical chemistry. A

VOLUME: 110

Page Numbers: 12992-3002

Journal Abbreviation:

ISSN: 1089-5639

DAY: 7

MONTH: Dec

YEAR: 2006

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9890903

IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Keywords Mesh Terms:

KEYWORDS: Vibration

MESH TERMS: chemistry

Chemical & Substance for Abstract: IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L. Information

Substance Name: Solvents

Registry Number: 0

Grant and Affiliation Information for IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L.

AFFILIATION: Department of Chemistry, University of California, Riverside, Riverside, California 92521, USA.

Country: United States

AGENCY: United States NIGMS

GRANT: GM 23851

ACRONYM: GM

MEDLINETA: J Phys Chem A

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

IR spectrum of the H5O2+ cation in the context of proton disolvates L-H+-L Related Publications

• 14th International HLA and Immunogenetics Workshop: report on understanding antibodies in transplantation.
• A Gynecologic Oncology Group study of platinum-DNA adducts and excision repair cross-complementation group 1 expression in optimal, stage III epithelial ovarian cancer treated with platinum-taxane chemotherapy.
• A locus on mouse Chromosome 9 (Adip5) affects the relative weight of the gonadal but not retroperitoneal adipose depot.
• A phagocytosis mutant of Entamoeba histolytica is less virulent due to deficient proteinase expression and release.
• An infrared nuNH scale for weakly basic anions. Implications for single-molecule acidity and superacidity.
• An interferon signature in the peripheral blood of dermatomyositis patients is associated with disease activity.
• Analysis of the Cob(II)alamin-5'-deoxy-3',4'-anhydroadenosyl radical triplet spin system in the active site of diol dehydrase.
• Biochemical and functional comparisons of Mcl-1 and Bcl-2 proteins: evidence for a novel mechanism of regulating Bcl-2 family protein function.
• Bioinformatic identification of tandem repeat antigens of the Leishmania donovani complex.
• Cathepsin Cs are key for the intracellular survival of the protozoan parasite, Toxoplasma gondii.
• Daxx represses expression of a subset of antiapoptotic genes regulated by nuclear factor-kappaB.
• Deregulated cyclin E promotes p53 loss of heterozygosity and tumorigenesis in the mouse mammary gland.
• Do sitting-atop metalloporphyrin complexes exist? Observation of N-H- - -pi bonding in arene solvates of a diprotonated porphyrin dication.
• Effects of question format and collection mode on the accuracy of retrospective surveys of health risk behavior: a comparison with daily sexual activity diaries.
• Fertility of ewes following artificial insemination with semen frozen in pellets or straws, a preliminary report.
• Free radical mechanisms in enzymology.
• Frequency and amplitude discrimination along the kinestheticcutaneous continuum in the presence of masking stimuli.
• HBXIP, cellular target of hepatitis B virus oncoprotein, is a regulator of centrosome dynamics and cytokinesis.
• IR spectrum of the H(5)O(2)(+) cation in the context of proton disolvates L-H(+)-L.
• Mammalian dap3 is an essential gene required for mitochondrial homeostasis in vivo and contributing to the extrinsic pathway for apoptosis.
• Mice lacking bi-1 gene show accelerated liver regeneration.
• Nur77 converts phenotype of Bcl-B, an antiapoptotic protein expressed in plasma cells and myeloma.
• Pediatric respiratory and systemic effects of chronic air pollution exposure: nose, lung, heart, and brain pathology.
• Physician patterns of metabolic screening for patients taking atypical antipsychotics: a retrospective database study.
• Probing nitrogen-sensitive steps in the free-radical-mediated deamination of amino alcohols by ethanolamine ammonia-lyase.
• Reasons for unprotected intercourse: analysis of the PRAMS survey.
• Reconstituted NALP1 inflammasome reveals two-step mechanism of caspase-1 activation.
• Scope of practice for public health professionals and volunteers.
• The empirical relationship between community social capital and the demand for cigarettes.
• Ubiquitin-conjugating enzyme Ubc13 is a critical component of TNF receptor-associated factor (TRAF)-mediated inflammatory responses.