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Synthesis of Me2LSn(o-CH3–C2B10H10): Crystal structure of Sn←O intramolecularly coordinated organotin compound containing 1-methyl-o-carborane

Reported is the preparation of the tetraorganotin(IV) compound Me2LSn(1-Me-1,2-C2B10H10) (3) bearing both O,C,O-chelating ligand (L=2,6-(t-BuOCH2)2C6H3) and 1-methyl-o-carborane. The use of sterical less bulky Me group was necessary for the preparation of 3.

出版机构:Elsevier Science

刊物名称:Inorganica Chimica Acta

出版时间:2010

ISSN:0020-1693

数据源:报刊文摘

Synthesis and conformational analysis of AzAsx-containing oligopeptides

SummaryFor the sake of improving synthetic methods and evaluating the conformational perturbation induced by the substitution of AzAsx for the Asx residue in the cognate dipeptide R-CO-Asx-Pro-NHR, we prepared the AzAsx-dipeptide sequence by making use of the crystalline triphosgene.

出版机构:Kluwer Academic Publishers

刊物名称:Letters in Peptide Science

出版时间:1995

ISSN:0929-5666

数据源:报刊文摘

New hetero-dilanthanide complexes containing Ln1(fod)3 and Ln2(fod)3 fragments (Ln=Pr–Nd; Nd–Sm; Eu–Tb and Ho–Er) linked by bis-diimine bridging ligand

New hetero-dilanthanide ?-diketonate complexes of the type [Ln1Ln2(fod)6(?-bpm)] {fod is the anion of 6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedione; bpm=2,2?

出版机构:Elsevier Science

刊物名称:Inorganic Chemistry Communications

出版时间:2010

ISSN:1387-7003

数据源:报刊文摘

Synthesis, spectrophotometric, structural and thermal studies of the charge transfer complex of p-phenylenediamine, as an electron donor with π acceptor 3,5-dinitrobenzoic acid

The interaction between p-phenylenediamine (PPD) as a donor with the ? acceptor 3,5-dinitrobenzoic acid (DNB) has been investigated spectrophotometrically in methanol at room temperature.

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2010

ISSN:1386-1425

数据源:报刊文摘

Structure of Leu5-enkephalin bound to a model membrane as determined by high-resolution NMR

SummaryOpioid peptides are thought to interact with the cell membrane in their biological journey to the membrane-bound receptor. Both organic solvents and model membranes have been used previously to determine the stable solution conformations of peptide hormones.

出版机构:Kluwer Academic Publishers

刊物名称:Letters in Peptide Science

出版时间:1995

ISSN:0929-5666

数据源:报刊文摘

NMR characterization and molecular modeling of fucoidan showing the importance of oligosaccharide branching in its anticomplementary activity

Fucoidan is a potent inhibitor of the human complement system whose activity is mediated through interactions with certain proteins belonging to the classical pathway, particularly the protein C4.

出版机构:Oxford University Press

刊物名称:Glycobiology

出版时间:2010

ISSN:0959-6658

数据源:报刊文摘

Selenium(IV) fluoride and oxofluoride anions

The three Se(+IV) fluoride and oxofluoride anions, SeF5 ?, SeOF3 ? and SeO2F?, have been studied using experimental and theoretical methods. The first crystal structures of a well-isolated undistorted SeF5 ? and of an oxotrifluoro-chalcogenite anion are reported.

出版机构:Elsevier Science

刊物名称:Journal of Fluorine Chemistry

出版时间:2010

ISSN:0022-1139

数据源:报刊文摘

Characterization of Acacia mangium polyflavonoid tannins by MALDI-TOF mass spectrometry and CP-MAS 13C NMR

Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrum indicated a ?twice-angular? structure resolving itself into a branched polymer structure up to 7 units oligomers presented in Acacia mangium tannin.

出版机构:Elsevier Science

刊物名称:European Polymer Journal

出版时间:2010

ISSN:0014-3057

数据源:报刊文摘

1H NMR study of temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) copolymers

1H NMR spectroscopy was applied to investigate temperature-induced phase separation in solutions of poly(N-isopropylmethacrylamide-co-acrylamide) [P(IPMAm/AAm)] random copolymers in D2O, D2O/ethanol and D2O/acetone. The NMR relaxation behaviour of water (HDO) was also examined.

出版机构:Elsevier Science

刊物名称:European Polymer Journal

出版时间:2010

ISSN:0014-3057

数据源:报刊文摘

Flexibility observed in high resolution structures of Streptomyces aureofaciens ribonucleases determined by diffraction methods

It has been widely accepted to distinguish between static structures determined by diffraction methods and dynamic structures determined by nuclear magnetic resonance (NMR). The dynamics of NMR structures is demonstrated by an ensemble of a number of overlaid structures.

出版机构:SP Versita

刊物名称:Biologia

出版时间:2010

ISSN:0006-3088

数据源:报刊文摘