Library

X
Language
Preferred search index
Number of Hits per Page
Default Sort Criterion
Default Sort Ordering
Size of Search History
Default Email Address
Default Export Format
Default Export Encoding
Facet list arrangement
Maximum number of values per filter
Auto Completion
Feed Format
Maximum Number of Items per Feed
Permalink If you want to be able to use settings permanently, you must save your settings and then set a Bookmark to the permalink
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1980-1984  (54)
  • 1975-1979  (45)
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Contributions to the chemistry of boron. 121. Dicoordinate amidoboron cations (1982)
    s.l. : American Chemical Society
    Inorganic chemistry 21 (1982), S. 706-716 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00132a048
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The reaction of organolithium compounds with borane donors. Preparation and isolation of lithium monoorganotrihydroborates (1983)
    s.l. : American Chemical Society
    Organometallics 2 (1983), S. 579-585 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00077a002
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Beryllium nitrogen compounds. 1. Monomeric bis(amido)beryllium compounds (1983)
    s.l. : American Chemical Society
    Inorganic chemistry 22 (1983), S. 2700-2703 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00161a012
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Preparation and characterization of salts containing cations of tricoordinate boron (1984)
    s.l. : American Chemical Society
    Inorganic chemistry 23 (1984), S. 4147-4152 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00193a009
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Metal tetrahydridoborates and (tetrahydroborato)metalates. 10. NMR study of the systems aluminum hydride/borane/tetrahydrofuran and lithium tetrahydroaluminate/borane/tetrahydrofuran (1981)
    s.l. : American Chemical Society
    Inorganic chemistry 20 (1981), S. 1062-1072 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50218a022
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie des Bors, LXXIV: Stabilisierung von Diborylaminen: (Borolanylamino)borane und (Diazaborolidinylamino)borane (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 884-895 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Boron, LXXIV: Stabilisation of Diborylamines: (Borolanylamino)boranes and (Diazaborolidinylamino) boranesThe thermal decomposition of diborylamines into a borane and a borazine derivative becomes considerably more difficult when the boron atoms of diborylamines are incorporated into a five-membered ring system. This type of diborylamines is represented by (1-borolanylamino)-boranes as well as by (1,3-dimethyl-1,3,2-diazaborolidin-2-Ylamino)boranes whose structure and bonding are discussed on the basis of spectroscopic data.
    Notes: Durch Einbau der Boratome eines Diborylamins in ein fünfgliedriges Ringsystem wird die thermische Zersetzung der Diborylamine in ein Boran-und ein Borazin-Derivat beträchtlich erschwert. (1-Borolanylamino)borane und (1,3-Dimethyl-1,3,2-diazaborolidin-2-ylamino)borane repräsentieren diese Diborylamin-Typen, deren Struktur und Bindungsverhältnisse aufgrund spektroskopischer Daten diskutiert werden.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090310
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Kernresonanzspektroskopische Untersuchungen an Bor-Verbindungen, XI. 14- und 11B-Kernresonanzstudien an Borazinen (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 3480-3485 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N. M. R. Spectroscopic Investigations on Boron Compounds. XI14N- and 11B-Nuclear Magnetic Resonance Studies on Borazines14N and 11B chemical shifts of 30 borazines can be interpreted in terms of delocalised pz electron pairs of the nitrogen atoms in the ring system. Calculated π charge densities at the N-atoms correlate linearly with δ14N. Substituents effects are discussed.
    Notes: Die 14N- und 11B-chemischen Verschiebungen von 30 Borazinen lassen sich im Sinne einer Delokalisierung der pz-Elektronenpaare der Stickstoffatome im Ringsystem interpretieren. Berechnete π-Elektronendichten an den N-Atomen korrelieren linear mit δ14N. Substituenten. effekte werden diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761091027
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Photoelektronenspektroskopische Untersuchungen an Bor-Verbindungen, II. Fünfgliedrige Heterocyclen des Bors (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3807-3830 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Photoelectron Spectroscopic Investigations on Boron Compounds, II. Five-membered Heterocycles of BoronThe He(I) photoelectron (P.e.)spectra of 30 derivatives of the isoelectronic 6π-electron five-membered ring compounds 1-7 containing boron with the nitrogen substituents R — H, CH3. C(CH3)3, Si(CH3)3, Sn(CH3)3, B[N(CH3)2]2 P(CH3)2, P[N(CH3)2]2. As(CH3)2 R′ — CH3, and the boron substituents Z — H. CH3 CI, Br, SCH3, OCH3 and N(CH3)2 show a cyclic π-conjugation of the ring compounds, which decreases on successive exchange of ring nitrogen atoms for ring sulfur atoms. - 11B chemical shifts follow a linear correlation with calculated π-charge densities and ππ*-orbital energy differences of the CNDO/S model as well as vertical ionization energies of the first p.e. bands.
    Notes: Die He(I)-Photoelektronen(PE)-Spektren von 30 Derivaten der isoelektronischen 6π-Elektronen-Fünfringsysteme des Bors 1-7 mit Stickstoffsubstituenten R — H, CH3. C(CH3)3, Si(CH3)3, Sn(CH3)3, B[N(CH3)2]2 P(CH3)2, P[N(CH3)2]2. As(CH3)2 R′ — CH3, und Borsubstituenten Z = H, CH3 Cl, Br, SCH3, OCH3 und N(CH3)2 lassen eine cyclische π-Konjugation im Ringgerüst erkennen. die bei sukzessivem Austausch von Ring-Stickstoff- gegen Ring-Schwefelatome abnimmt. - Chemische Verschiebungen der 11B-Kernresonanzsignale sind mit berechneten π-Ladungsdichten und ππ*-Orbitalenergiedifferenzen des CNDO/S-Modells sowie mit vertikalen Ionisierungsenergien der ersten PE-Banden linear korrelierbar.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751081215
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Kernresonanzspektroskopische Untersuchungen an Borverbindungen, IX. Heteronucleare Doppel- und Tripel-Resonanz-Messungen 1H-{11B}, 1H-{13C}, 1H-{11B, 13C} an einfachen Organoboranen (1975)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3831-3841 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nuclear Magnetic Resonance Studies on Boron Compounds, IX. Heteronuclear Double and Triple Resonance Measurements 1H-{11B}, 1H-{13C},1H-{11B, 13C} on Simple OrganoboranesCoupling constants 1J(13C11B) and 1J(13C11H) as well as chemical shifts δ11B and δ13C have been determined in compounds of the type R3-nBXn (R = CH3; X = N(CH3)2, OCH3, SCH3; n = 0,1,2,3) by double and triple resonance experiments 1H-{11B}, 1H-{13C}, and 1H-{11B, 13C}. Double resonance studies 1H-{11B} are useful for investigating ligand exchange processes. There is a linear relationship for the compounds studied between δ13C of the methyl group bound to boron and δ11B. A relatively large range is observed for the coupling constants 1J(13C11B). The comparison with corresponding data of structurally related carbon compounds shows that there is no simple explanation in terms of changes of the s-character in the BC-bond and electronegativity of the ligands X.
    Notes: Die Kopplungskonstanten 1J(13C11B) und 1J(13C1H) sowie die chemischen Verschiebungen δ11B und δ13C werden für Verbindungen des Typs R3-nBXn (R = CH3; X = N(CH3)2, OCH3, SCH3; n = 0, 1, 2, 3) angegeben. Zur Messung wurden Doppel- und Tripel-Resonanz-Experimente 1H-{11B}, 1H-{13C}, 1H-{13C,11B} herangezogen. Doppelresonanzstudien 1H-{11B} sind für die Untersuchung von Ligandenaustauschvorgängen nützlich. Zwischen δ13C der borgebundenen Methylgruppen und δ11B der untersuchten Verbindungen besteht eine lineare Beziehung. Die Kopplungskonstanten 1J(13C11B) überstreichen einen relativ großen Bereich. Der Vergleich mit strukturverwandten Kohlenstoffverbindungen zeigt, daß sich diese nicht alleine mit Änderungen des s-Charakters in der BC-Bindung oder der Liganden-Elektronegativität von X erklären lassen.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19751081216
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Über cyclische und bicyclische Hydrazinbis (phosphine) (1976)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 109 (1976), S. 1942-1963 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Cyclic and Bicyclic Hydrazinebis(phosphines)Nucleophilic substitutions at 3,6-dichloro-1,2,4,5-tetramethyl-perhydro- 1,2,4,5,3,6-tetrazadiphosphorine (1) led to new 3,6-derivatives. The III phosphorus was oxidized to Pv by sulfur and selenium. AlCl3 reacts with 1 to yield an „adduct“ which can be regarded as a tetrachloroaluminate of a new cyclic cation with dicoordinate phosphorus. Reactions of 1 with heptamethyldisilazane, hexamethyldisilthiane or H2O lead to the bicyclic compounds 24-26 while hydrazine and methylhydrazine yield the hydrazinophosphines 20 and 18 with bicyclo[2,2,2]octane structure The spectroscopic data of the new compounds are discussed.
    Notes: Durch nucleophile Substitutionsreaktionen an 3,6-Dichlor-1,2,4,5-tetramethyl-perhydro-1,2,4,5,3,6-tetrazadiphosphorin (1) wurden neue 3,6-Derivate dargestellt und der PIII-Phosphor mit Schwefel und Selen zu Pv oxidiert. AlCl3 reagiert mit 1 zu einem „Addukt“, das als Tetrachloroaluminat eines neuen cyclischen Kations mit P der Koordinationszahl 2 aufgefaßt werden kann. Reaktionen von 1 mit Heptamethyldisilazan, Hexamethyldisilthian oder H2O führen zu den bicyclischen Verbindungen 24-26, während Hydrazin und Methylhydrazin die Hydrazinophosphine 20 und 18 mit Bicyclo [2,2,2]octan-Struktur liefern. Die spektroskopischen Daten der neuen Verbindungen werden diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19761090535
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...