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  • Inorganic Chemistry  (8)
  • Analytical Chemistry and Spectroscopy  (1)
  • Organic Chemistry
  • methylenebisphosphines
  • γ-anti effect
  • 1985-1989  (3)
  • 1980-1984  (6)
Collection
Keywords
  • Inorganic Chemistry  (8)
  • Analytical Chemistry and Spectroscopy  (1)
  • Organic Chemistry
  • methylenebisphosphines
  • γ-anti effect
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 21 (1983), S. 315-318 
    ISSN: 0030-4921
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The analysis of the 1H NMR spectra of 2,8-dithia-1,5-diphosphabicyclo[3.3.0]octane, 2,8-dithia-1-phospha-5-azabicyclo[3.3.0]octane and 2,8-dithia-1-arsa-5-phosphabicyclo[3.3.0]octane is supported by means of 2D- J-resolved NMR measurements. The spectra suggest a preferred conformer with strong puckering of the fused five membered rings.
    Additional Material: 6 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 567 (1988), S. 122-130 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: NMR-Untersuchungen an Stannabicycloundecanen des Typs RSn(CH2CH2CH2)3NEs werden 1H-, 13C- und 119Sn-NMR-Daten von sieben Stannabicycloundecanen des Typs RSn(CH2CH2CH2)3N (1, R = Cl; 2, R = Br; 3, R = I; 4, R = OH; 5, R = SPh; 6, R = Me; 7, R = Sn(CH2CH2CH2)3N) mitgeteilt. Aus den Protonen-NMR-Koaleszenzdaten bei tiefer Temperatur wird ΔGTc* für die Racemisierung des Bicyclo[3.3.3]-Gerüstes zu 37 ± 1 kJ/mol bestimmt. Die Werte sind unabhängig vom Substituenten R. In den entsprechenden Siliciumderivaten (R = Me) werden geringere Aktivierungsparameter gefunden.
    Notes: The 1H, 13C, and 119Sn NMR data of seven stannabicycloundecanes of the type RSn(CH2CH2CH2)3N (1, R = Cl; 2, R = Br; 3, R = I; 4, R = OH; 5, R = SPh; 6, R = Me; 7, R = Sn(CH2CH2CH2)3N) are reported. From 1H NMR coalescence data at low temperature the free activation enthalpies for the racemisation of the bicyclo[3.3.3]skeleton were estimated to be 37 ± 1 kJ/mol. They are independent of the substituent R. However, it decreases when the tin atom is replaced by silicon for R = Me.
    Additional Material: 3 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 502 (1983), S. 158-164 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 5-Aza(oxa, thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octanes  -  Intramolecular Stabilized StannylenesBy the reaction of tin(II) butoxide with mercaptanes of the general type E(CH2—CH2SH)2 (E = N-t-Bu, NMe, O, S) at temperatures up to 50°C the 5-aza(oxa, thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octanes I - IV are obtained in high yields. The compounds are monomeric in solution. Contrary at higher reaction temperatures (80°C) the spiro-compounds of the type [E(CH2CH2S)2]2Sn (V - VIII) are formed. Some typical stannylene reactions of I - IV with BF3, Cr(CO)6, Br2, and PhS—SPh show the high reactivity of the compounds. Their structure is investigated by 1H, 13C, and 119Sn n.m.r., i.r., and Mössbauer spectroscopy.
    Notes: Durch Umsetzung von Zinn(II)-butoxid mit Mercaptanen des allgemeinen Typs E(CH2CH2SH)2 (E = N-t-Bu, NMe, O, S) werden bei Temperaturen bis 50°C die 5-Aza(Oxa, Thia)-2, 8-dithia-1-stanna(II)-bicyclo[3.3.01,5]octane in hohen Ausbeuten erhalten. Die Verbindungen sind monomer in Lösung. Bei höheren Reaktionstemperaturen (80°C) resultieren dagegen vorzugsweise die Spiroverbindungen des Typs [E(CH2CH2S)2]2Sn (V - VIII). Einige typische Stannylenreaktionen von I - IV mit BF3, Cr(CO)6, Br2 und PhS—SPh belegen die hohe Reaktivität der Verbindungen. Ihre Struktur wird durch 1H-, 13C-, 119Sn-NMR, IR- und Mößbauer-Spektren bewiesen.
    Additional Material: 4 Tab.
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 5-Alkyltriptychoxazastannolidones and 4,5,6,11-Tetramethyltriptychdiazastannolidone  -  Atrane-like Organotin Derivatives of the Nitrilotriacetic Acid and the Nitrilotriacetic Acid TriamideAlkylphenyltin oxides react with nitrilotriacetic acid in dimethylformamide/toluene under elemination of water and benzene to the 5-alkyltriptychoxazastannolidones. The reaction of methyltin triethoxide with nitrilotriacetic-N,N′,N″-trimethyltriamide leads to the 4,5,6,11-tetramethyltriptychdiazastannolidone. The structure of these compounds is investigated by 1H-, 13C- and 119Sn-n.m.r. measurements.
    Notes: Alkylphenylzinnoxide reagieren mit Nitrilotriessigsäure in DMF/Toluen unter Eliminierung von Wasser und Abspaltung von Benzen zu den 5-Alkyltriptychoxazastannolidonen. Die Reaktion von Methylzinntriethoxid mit Nitrilotriessigsäure-N,N′,N′-trimethyltriamid führt zum 4,5,6,11-Tetramethyltriptychdiazastannolidon. Die Struktur der Verbindungen wird 1H-, 13C- und 119Sn-NMR-spektroskopisch aufgeklärt.
    Additional Material: 1 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 523 (1985), S. 21-24 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1-Organo-5,5-di-t-butyl-diptych-benzoxaphospha-stannolins  -  Diorganotin Compounds with Transannular Sn—P InteractionDi-t-butyltindimethoxid react with organo-bis-o-hydroxyphenyl-phosphines in benzene under elemination of methanol to the title compounds. The phosphorus-tin coordination is proved by 31 and 119Sn n.m.r. measurements.
    Notes: Di-t-butylzinndimethoxid reagiert mit Organo-bis-o-hydroxy-phenyl-phosphinen RP(o-C6H4OH)2 in Benzen unter Austritt von Methanol zu den Titelverbindungen. Die Verbindungen sind monomer löslich, die Phosphor-Zinnkoordination wird 31P- und 119Sn-NMR-spektroskopisch nachgewiesen.
    Additional Material: 1 Tab.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 463 (1980), S. 123-131 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Association Behaviour of Strannatranes1-Alkylstannatranes (R = Me, Et, Bu, Phenyl) associate in unpolar solvents to relatively stable trimeric units. In aqueous solution 1-methylstannatran displays no autoassociation. 1-t-Butylstannatran, 1-o-tolylstannatran, and 1-alkylthiostannatranes are monomeric in all kinds of solvents. The association behaviour is characterized by molecular mass estimation and 1H-, 13C-, and 119Sn-NMR measurements.
    Notes: Es wird über einige neue Stannatrane und Thiostannatrane berichtet und gezeigt, daß die 1-Alkylstannatrane in unpolaren Lösungsmitteln zu relativ stabilen trimeren Einheiten assoziieren. In wäßriger Lösung zeigt 1-Methylstannatran keine Selbstassoziation. 1-t-Butylstannatran, 1-o-Tolylstannatran und 1-Alkylthiostannatrane sind in allen Lösungsmitteln monomer. Das Assoziationsverhalten wird durch Molekulargewichtsbestimmung und 1H-, 13C- und 119Sn-NMR-Messungen charakterisiert.
    Additional Material: 5 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 467 (1980), S. 203-210 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis, Structure, and Molecular Mobility of [(o-Diorganophosphinylmethyl)phenyl]-diorganotin HalidesThe oxidation and halogenation of (o-triorganostannylbenzyl)diorganophosphines, prepared from o-lithiobenzyl-diorganophosphines and triorganotin halides yields the [(o-diorganophosphinylmethyl)phenyl]diorganotin halides 6-10. IR, 1H- and 31P-NMR data confirm for 6-10 a complexcyclic structure with pentacoordinated tin. From the temperature dependence of the 1H-NMR spectra follows a configuration inversion at the tin atom in these compounds.
    Notes: Die Oxidation und Halogenierung von (o-Triorganostannylbenzyl)-diorganophosphinen, dargestellt aus o-Lithiobenzyl-diorganophosphinen und Triorganozinnhalogeniden, liefert die [(o-Diorganophosphinylmethyl)-phenyl]-diorganozinnhalogenide 6-10. IR-, 1H-und 31P-NMR-Daten bestätigen für 6-10 eine komplexcyclische struktur mit pentakoordiniertem Zinn. Aus der Temperaturabhängigkeit der 1H-NMR-Spektren folgt ein Konfigurationswechsel am Zinn. Atom in diesen Verbindungen.
    Additional Material: 1 Ill.
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  • 8
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,4,6-Trimethyl-5,5-dialkyldiptychdiazastannolidone - Intramolecular Pentacoordinated Stannyl Derivatives of N,N′,N″-Trimethyliminodiacetic Acid AmideThe title compounds were obtained by the reaction of dialkyltin dialkoxides with N,N′,N″-trimethyl iminodiacetic acid diamide in boiling toluene. The compounds are monomeric in benzene. Their structure was investigated by 1H, 13C and 119Sn n.m.r. measurements.
    Notes: Die Titelverbindungen werden durch die Reaktion von Dialkylzinndialkoxiden mit N,N′,N″-Trimethyliminodiessigsäurediamid in siedendem Toluen erhalten. Die Verbindungen sind monomer in Benzen. Ihre Struktur wird 1H-, 13C- und 119Sn-NMR-spektroskopisch aufgeklärt.
    Additional Material: 2 Tab.
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  • 9
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Bis(2-mercaptoethyl)phosphines with Organotin Compounds. Molecular Structure of a Tin Containing Sixteen-membered RingThe reaction of bis(2-mercaptoethyl)phosphine with di-t-butyltin dimethoxide yields mixture of oligomers of the type [t-Bu2Sn(SCH2CH2)2Pr]n (R = Me, Ph) from which the trans-configurated dimers (n = 2) have been isolated. By the reaction with sulphur and selenium, respectively, these dimers were transformed to the corresponding thioxo and selenoxo derivatives.The sixteen-membered ring trans-[t-Bu2Sn(SCH2CH2)2P(S)Ph]2 crystallizes in the space group P21/n with the unit cell dimensions a 1350.9, b 1310.2, c 1500.3 pm, β 96.36° and does not exhibit any intramolecular Sn—P interaction: The 1,5-diorgano-1-chloro-5-elementa-1-stanna(IV)-bicyclo-[3.3.01,5]octanes R(Cl)Sn(SCH2CH2)2E (6, R = Ph, E = PPh; 7, R = Ph, E = NMe) have been prepared from the corresponding sodium dithiolates and phenyltrichlorostannane. The transannulare Sn—P and Sn—N interactions in 6 and 7 are confirmed by 31P and 119Sn NMR investigations.
    Notes: Die Reaktion von Bis(2-mercaptoethyl)phosphinen mit Di-t-butylzinndimethoxid liefert Mischungen von Oligomeren des Typs [t-Bu2Sn(SCH2CH2)2PR]n (R = Me, Ph), von denen die trans-konfigurierten Dimere (n = 2) isoliert wurden. Durch Reaktion mit Schwefel bzw. Selen wurden diese in die entsprechenden Thio- bzw. Selenoderivate überführt. Der Sechzehnring trans-[t-Bu2Sn(SCH2CH2)2P(S)Ph]2 4 kristallisiert in der Raumgruppe P21/n mit den Gitterkonstanten a 1350,9, b 1310,2, c 1500,3 pm und β 96,36°, er enthält keine intramolekularen Sn—P.-Wechselwirkungen. Die 1,5-Diorgano-1-chloro-5-element-1-stanna(IV)-bicyclo[3.3.01,5]-octaneR(Cl)Sn(SCH2CH2)2E (6, R = Ph, E = PPh; 7, R = Ph, E = NMe) wurden aus den entsprechenden Natriumdithiolaten und Phenyltrichlorstannan erhalten. Die transannularen Sn—P- und Sn—N- Wechselwirkungen in 6 und 7 werden durch 31P- und 119Sn-NMR-Untersuchungen bestätigt.
    Additional Material: 1 Ill.
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