ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    ISSN: 1434-1948
    Keywords: (R)-(+)-2,3-Epoxy-1-propanol ; 2,3-Dihydroxyalkyl phosphanes ; 1,3,2-Dioxaborolane ; 1,3-Dioxolane ring ; Enantiopure phosphanes ; Complexes ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of (R)-(+)-2,3-epoxy-1-propanol with Ph2PH, Ph(Me)PH, or PhPH2 in the superbasic medium KOH/DMSO affords the novel chiral phosphanes 1a-1c. While 1a is obtained enantiomerically pure, 1b and the secondary phosphane 1c are formed as mixtures of diastereoisomers (RPRC, SPRC) with homochiral β carbon atoms. Derivatization of 1a with phenylboronic acid or 2,2-dimethoxypropane yields 2a and 3a with 1,3,2-dioxaborolane and 1,3-dioxolane ring systems, respectively. The X-ray structure of 2a (space group P21) reveals the presence of four molecules of R configuration in the unit cell. Nucleophilic phosphanylation of (R)-(-)-2,3-O-isopropylideneglycerol tosylate with Ph2PH, Ph(Me)PH, or PhPH2 yields chiral 3a-3d. Compound 3b was obtained enantiomerically pure. The secondary phosphane 3c has been employed in syntheses of the hydrophilic tertiary phosphanes 3e, 3f and of the novel bidentate phosphane ligands 3g, 3h, all of which have homochiral β carbon atoms. PdII complexes PdL2Cl2 of 1a, 2a, 3a (L) are formed as mixtures of cis/trans isomers. RhI complexes of 1a, 3a, and bidentate 3h have also been synthesized.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 102 (1969), S. 2900-2913 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Trimethyl- und Triphenyl-germanium-, -zinn- und -bleihalogenide reagieren unter Ausschluß von Feuchtigkeit und Luftsauerstoff in Gegenwart von Triäthylamin als Halogenwasserstoff- Acceptor mit Phosphin, Phenylphosphin und Diphenylphosphin unter Bildung neuer Organometallphosphine vom Typ (R3M)3P, (R3M)2PC6H5 und R3MP(C6H5)2. Unsymmetrisch substituierte Organometallphosphine der Art (R3M)(R3M′)PC6H5 und (R3M)2(R3M)2(R3M′)P erhält man durch Umsetzung von Lithium-triorganometall-phenylphosphid bzw. Lithium- bis(triorganometall)-phosphid mit entsprechenden Organometallhalogeniden. Die Infrarot-, Raman-, 1H-NMR- und 31P-NMR-spektroskopischen Daten der Verbindungen werden mitgeteilt und diskutiert.
    Additional Material: 11 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2350-2355 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometalphosphine Substituted Transition Metal Complexes, X. (Organometalphosphine)tetracarbonyliron ComplexesPentacarbonyliron reacts on u. v. irradiation with tri(tert-butyl)-, tris(trimethylsilyl)-, tris(tri-methylgermyl)-, and tris(trimethylstannyl)phosphine with displacement of one CO-ligand to give the corresponding tris[(triorganoelement-IVa)phosphine]tetracarbonyliron complexes. The same compounds can also be synthesized by elimination of pentacarbonyliron from enneacarbonyldiiron in the presence of the tris(triorganoelement-IVa)phosphines. The i. r., 1H n. m. r., and 31P n. m. r. spectroscopic data of the complexes are reported and discussed.
    Notes: Pentacarbonyleisen reagiert bei UV-Bestrahlung mit Tri(tert.-butyl)-, Tris(trimethylsilyl)-, Tris(trimethylgermyl)- bzw. Tris(trimethylstannyl)-phosphin unter Abspaltung eines CO-Liganden und Bildung entsprechender [Tris(triorganoelement-IVa)-phosphin]-tetracarbonyl-eisen-Komplexe. Dieselben Verbindungen entstehen auch unter Abspaltung von Pentacarbonyleisen aus Enneacarbonyldieisen und den genannten Tris(triorganoelement-IVa)-phosphinen. Die IR-, 1H-NMR- und 31P-NMR-spektroskopischen Daten der Komplexe werden mitgeteilt und diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3430-3437 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Coordinated Ligands, III. Synthesis of Heteroatom Chelate Complexes via the Lithium Phosphido Complex cis-Mo(CO)4(Me2PLi)2The dilithium salt cis-Mo(CO)4(Me2PLi)2 (1), obtained by deprotonation of cis-tetracarbonyl-bis(dimethylphosphine)molybdenum(0), reacts with dibromomethylstibine or dichloromethylbismutine to give the unusual complexes (CO)4Mo(PMe2-SbMe-SbMe-PMe2) (4) and (CO)4Mo(PMe2-BiMe-BiMe-PMe2) (5), respectively. Reaction of 1 with tert-butyldichlorophosphine affords in low yield a complex of a triphosphine, cis-Mo(CO)4(PMe2-PBut-PMe2) (6). While with dichlorodimethylsilane 1 affords only polymeric products of variable composition, with bis(cyclopentadienyl)titanium- or -zirconium dichloride and 1,2-dichloro-1,1,2,2-tetramethyldisilane the expected chelate complexes (CO)4Mo(PMe2-CP2EIvb-PMe2) (EIvb = Ti, Zr) (8, 9) or (CO)4Mo(PMe2-SiMe2-SiMe2-PMe2) (7), respectively, are obtained in good yields. The structure of these compounds is dicussed on the basis of their spectra.
    Notes: Das durch Deprotonierung von cis-Tetracarbonylbis(dimethylphosphin)molybdän(0) zugängliche Dilithiumsalz cis-Mo(CO)4(Me2PLi)2 (1) reagiert mit Dibrommethylstibin bzw. Dichlormethylbismutin unter Bildung der ungewöhnlichen Komplexverbindungen (CO)4Mo(PMe2-SbMe-SbMe-PMe2) (4) und (CO)4Mo(PMe2-BiMe-BiMe-PMe2) (5). Umsetzung von 1 mit tert-Butyldichlorphosphin liefert in geringer Ausbeute den Komplex eines Triphosphins, (CO)4-Mo(PMe2-PBut-PMe2) (6). Während 1 mit Dichlordimethylsilan nur polymere Produkte uneinheitlicher Zusammensetzung liefert, entstehen mit Bis(cyclopentadienyl)titan- bzw. -zir-coniumdichlorid oder 1,2-Dichlor-1,1,2,2-tetramethyldisilan die erwarteten Chelatringsysteme (CO)4Mo(PMe2-Cp2EIvb-PMe2) (EIvb = Ti, Zr) (8, 9) bzw. (CO)4 Mo(PMe2-SiMe2-SiMe2-PMe2) (7) in guten Ausbeuten. Die Struktur der Verbindungen wird auf der Basis ihrer Spektren diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3438-3448 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Coordinated Ligands, IV. Synthesis of Asymmetrically Substituted Bifunctional Phosphine Ligands in the Coordination Sphere of the Phosphido Complex cis-Mo(CO)4(PhPHLi)2Metalation of cis-Mo(CO)4(PhPH2)2 (1) with n-butyl- or methyllithium affords the lithium phenylphosphido complex cis-Mo(CO)4(PhPHLi)2 (1a) which with chlorotrimethylsilane, 1,2-dichloro-1,1,2,2-tetramethyldisilane, bis(cyclopentadienyl)titanium or zirconium dichloride gives the complexes cis-Mo(CO)4(PhPHSiMe3)2 (2) or cis-Mo(CO)4(PhPH)2Z (3-5) (Z = Me2Si—SiMe2, TiCp2, ZrCp2). The corresponding reaction succession starting with 2 or cis-Mo(CO)4(PhPHSiMe2SiMe2PPhH) (3) yields the complexes cis-Mo(CO)4(PhPSiMe3)2Z (6-9) (Z = TiCp2, ZrCp2, Me2Si, Me2Si-SiMe2) and cis-Mo(CO)4PhP(SiMe2—SiMe2)2PhP (10). The structure of these complexes is discussed on the basis of their NMR and IR spectra.
    Notes: Durch Metallierung von cis-Mo(CO)4(PhPH2)2 (1) mit n-Butyl- bzw. Methyllithium erhält man den Lithiumphenylphosphido-Komplex cis-Mo(CO)4(PhPHLi)2 (1a). Dessen Umsetzung mit Chlortrimethylsilan, 1,2-Dichlor-1,1,2,2-tetramethyldisilan, Bis(cyclopentadienyl)titan- bzw. -zirconiumdichlorid liefert die Komplexe Mo(CO)4(PhPHSiMe3)2 (2) bzw. Mo(CO)4(PhPH)2Z (3-5)(Z = Me2Si—SiMe2, TiCp2, ZrCp2). Die analoge Reaktionsfolge liefert ausgehend von 2 bzw. Mo(CO)4(PhPHSiMe2SiMe2PPhH) (3) Komplexe des Typs cis-Mo(CO)4(PhPSiMe3)2Z (6-9) (Z = TiCp2, ZrCp2, Me2Si, Me2Si—SiMe2) und cis-Mo(CO)4PhP(SiMe2SiMe2)2PhP (10). Die Struktur dieser Verbindungen wird auf der Basis ihrer Kernresonanz- und Infrarotspektren diskutiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Coordinated Ligands, VIII. Synthesis, Reactivity, and Structure of Molybdenum- and Nickel Carbonyl Complexes of 1,3-Bis(phenylphosphino)propane1,3-Bis(phenylphosphino)propane reacts with Ni(CO)4, C7H8Mo(CO)4, and Mo(CO)6 to produce complexes of the type (CO)nM(PhPH—C3H6—PPhH) (n = 4, M=Mo; n = 2, M=Ni) and oligomers thereof. These compounds were also obtained by the reaction of phosphido complexes (CO)nM(PhPHM′)2 (n = 4, M=Mo, M′=Li; n = 2, M=Ni, M′=Li, Na) with 1,3-dibromopropane. The complexes (CO)nM(PhPH—C3H6—PPhH) may be deprotonated with methyllithium. The reactions of the phosphido complexes thus obtained are discussed. From the meso-form of (CO)2Ni(PhPH—C3H6—PPhH), which crystallizes in the space group Cmc21, an x-ray structure analysis has been performed.
    Notes: 1,3-Bis(phenylphosphino)propan reagiert mit Ni(CO)4, C7H8Mo(CO)4 und Mo(CO)6 unter Bildung von Komplexen des Typs (CO)nM(PhPH—C3H6—PPhH) (n = 4, M=Mo; n = 2, M = Ni) und deren Oligomeren. Diese Verbindungen werden auch bei Umsetzung von Phosphidokomplexen (CO)nM(PhPHM′)2 (n = 4, M=Mo, M′=Li; n = 2, M=Ni, M′=Li, Na) mit 1,3-Dibrompropan erhalten. Die Komplexe (CO)nM(PhPH—C3H6—PPhH) lassen sich mit Methyllithium deprotonieren. Über Reaktionen der dabei gebildeten Phosphidokomplexe wird berichtet.  -  Von der Mesoform von (CO)2Ni(PhPH—C3H6—PPhH) (1), das in der Raumgruppe Cmc21 kristallisiert, wurde eine Röntgenstrukturanalyse durchgeführt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 1566-1574 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Reactions of the Phosphinic Ester Me2P(:O)OC(CF3)2C(CF3)2OHThe product obtained from the reaction of the Me3SiO-functional 1,3,2λ5-dioxaphospholane 1 with water or hydrogen chloride has the structure 2b of a phosphinate; the expected isomeric hydroxyphosphorane 2a has not been observed. The structure of 2b has been determined by X-ray crystal structure analysis. Crystals of 2b are monoclinic; space group P21/c. In the crystalline state 2b forms dimers, as a result of strong hydrogen bonding between the P(:O)-group of one molecule and the OH-group of a second molecule. Reactions of 2b with chlorotrimethylsilane in the presence of triethylamine resulted in cyclisation with formation of the phosphorane 1. With thionyl chloride 2b gave the cyclic chlorophosphorane 3, while 2b and 3 reacted with formation of the cyclic anhydride 4 of the hypothetical hydroxyphosphorane 2a.
    Notes: Das Produkt der Umsetzung des Me3SiO-funktionellen 1,3,2λ5-Dioxaphospholans 1 mit Wasser oder Chlorwasserstoff besitzt die Konstitution 2b eines Phosphinsäureesters; das erwartete isomere Hydroxyphosphoran 2a wird nicht beobachtet. Die Struktur von 2b wurde durch Röntgen-analyse bestimmt. 2b kristallisiert monoklin, Raumgruppe P21/c, und bildet im kristallinen Zu-stand Dimere, in denen starke Wasserstoffbrückenbindungen zwischen der P(:O)-Gruppe eines Moleküls und der OH-Gruppe eines zweiten Moleküls vorliegen. Durch Umsetzung von 2b mit Chlortrimethylsilan in Gegenwart von Triethylamin erfolgt Cyclisierung zum Phosphoran 1. Umsetzung von 2b mit Thionylchlorid liefert das cyclische Chlorphosphoran 3, während aus 2b mit 3 das Anhydrid 4 des hypothetischen Hydroxyphosphorans 2a gebildet wird.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 1383-1390 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometalphosphine-substituted Transition Metal Complexes, VII. Organometalphosphinetricarbonylnickel(0) ComplexesThe reaction of tetracarbonyl nickel with tri(tert-butyl)phosphine, tris(trimethylsilyl)-, tris(trimethylgermyl)-, tris(trimethylstannyl)-, and tris(trimethylplumbyl)phosphine as well as with trimethylstannyldiphenylphosphine, bis(trimethylstannyl)phenylphosphine, and bis(diphenylphosphino)phenylarsine results in the elimination of one CO-ligand and the formation of corresponding organometalphosphinetricarbonylnickel(0) complexes. The i.r., 1H n.m.r., and 31P n.m.r. spectra are reported and discussed.
    Notes: Tetracarbonylnickel reagiert mit Tri(tert.-butyl)-phosphin, Tris(trimethylsilyl)-, Tris(trimethylgermyl)-, Tris(trimethylstannyl)- und Tris(trimethylplumbyl)-phosphin sowie mit Trimethylstannyl-diphenyl-phosphin, Bis(trimethylstannyl)-phenyl-phosphin und Bis(diphenylphosphino)-phenyl-arsin unter Abspaltung eines CO-Liganden und Bildung entsprechender Organometallphosphin-tricarbonyl-nickel(0)-Komplexe. Die Infrarot-, 1H-NMR-und 31P-NMR-Spektren werden mitgeteilt und diskutiert.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 1391-1396 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometalphosphine-substituted Transition Metal Complexes, IX. Organometalphosphinenitrosyldicarbonylcobalt ComplexesNitrosyltricarbonylcobalt reacts with tri(tert - butyl) phosphine, tris(trimethylsilyl) -, tris(trimethylgermyl) -, and tris(trimethylstannyl)phosphine under loss of one CO-ligand and formation of the corresponding organometalphosphinenitrosyldicarbonylcobalt complexes. The I. r., 1H n. m. r., and u. v. spectra are reported and discussed.
    Notes: Nitrosyltricarbonylkobalt reagiert mit Tri(tert. - butyl) - Phosphin, Tris(trimethylsilyl) -, Tris(trimethylgermyl) - und Tris(trimethylstannyl) -phosphin unter Abspaltung eines CO - Liganden und Bildung entsprechender Organometallphosphin - nitrosyl -dicarbonyl -kobalt -Komplexe. Die IR -, 1H - NMR - und UV - Spektren werden mitgeteilt und diskutiert.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidative Addition of Hexafluoroacetone and Hexafluorobiacetyl to Phosphorus(III) Fluorides RR′PF: Synthesis of Chiral 1,3,2-Dioxaphospholanes and 1,3,2-DioxaphospholenesHexafluoroacetone and hexafluorobiacetyl react with fluorophosphines and fluorophosphites in an oxidative addition to form stable cyclic oxyphosphoranes containing the 1,3,2-dioxaphospholane (2) or 1,3,2-dioxaphospholene ring system (3). 19F and 31P NMR spectra are reported. The temperature dependency of the 19F NMR spectra in the range between -90 and +110°C is discussed in the light of pseudorotation processes at phosphorus(V).
    Notes: Hexafluoraceton und Hexafluorbiacetyl reagieren mit Fluorphosphinen und Fluorphosphiten unter Bildung stabiler cyclischer Oxyphosphorane mit dem 1,3,2-Dioxaphospholan- (2) bzw. Dioxaphospholen-Ringsystem (3). 19F- und 31P-NMR-Spektren werden mitgeteilt. Die Temperaturabhängigkeit der 19F-NMR-Spektren im Bereich von -90 bis +110°C wird auf der Basis von Pseudorotationsprozessen am Phosphor(V) diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...