Organometallphosphin-substituierte Übergangsmetallkomplexe, ΧΧΠ Darstellung und komplexchemisches Verhalten von Dimethylstannandiylbis(di-t ert-butylphoshin).

1976 ◽  
Vol 31 (1) ◽  
pp. 90-94 ◽  
Author(s):  
Herbert Schumann ◽  
Wolf-Walther Du Μοnt
Keyword(s):  
Uv Irradiation ◽  
Nmr Spectra ◽  
Ir And Nmr Spectra ◽  
New Compounds

Dimethylstannandiylbis(di-tert-butylphosphine) reacts with tetracarbonyl nickel under formation of tricarbonyl-dimethylstannandiylbis(di-tert-butylphosphine)nickel and polymeric dicarbonyl-dimethylstannanediylbis(di-tent-butylphosphine)nickel and with hexacarbonylchromium under UV-irradiation as well as with tetracarbonyl-norbornadienechromium yielding tetracarbonyl-dimethylstannandiylbis(di-tent-butylphosphine)-chromium. IR and NMR spectra of the new compounds are discussed

Darstellung und Charakterisierung substituierter Phosphinoether und -thioether / Preparation and Characterization of Substituted Phosphinoethers and -thioethers

1995 ◽  
Vol 50 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Werner Wolfsberger ◽  
Wolfgang Burkart ◽  
Helmut Werner
Keyword(s):  
Pure State ◽  
Ring Opening ◽  
Nmr Spectra ◽  
Ir And Nmr Spectra ◽  
Elemental Analyses ◽  
Alkyl Ethers ◽  
New Compounds ◽  
Nucleophilic Ring Opening ◽  
Secondary Phosphines

The (diorganophosphinopropyl)alkyl ethers 1-7 are prepared by hydrophosphination of allylalkyl ethers with secondary phosphines. The corresponding thioethers cannot be obtained in a pure state by the same route. The nucleophilic ring opening of thiirane with lithium dialkyl phosphides, followed by the reaction with ClSi(CH3)3 or Cl(CH2)2OCH3 produces the thioethers 8-12 and 16. The silylated thioethers 8, 10 and 12 react with CH3OH/H2O to give the phosphinoethyl thiols 13-15. All new compounds have been identified and characterized by elemental analyses, IR and NMR spectra.

scholarly journals Komplexchemie polyfunktioneller Liganden, 52 [1]. Hydrido- und Deuterido-mangan(I)-carbonyl-Komplexe des 1.1.1- Tris (diphenylphosphinomeihy 1) ethans / Complex Chemistry of Polyfiinctional Ligands, 52 [1]. Hydrido- and Deuterido-manganese(I)-carbonyl Complexes of 1,1,1 -Tris(diphenylphosphinomethyl)ethane

1979 ◽  
Vol 34 (6) ◽  
pp. 799-804 ◽  
Author(s):  
Jochen Eilermann ◽  
Helmut A. Lindner
Keyword(s):  
Uv Irradiation ◽  
Methyl Alcohol ◽  
Ultraviolet Irradiation ◽  
Nmr Spectra ◽  
Carbonyl Complexes ◽  
Decomposition Products ◽  
H Nmr ◽  
Acetone Water ◽  
Complex Chemistry ◽  
New Compounds

[Mn(CO)3(R2PCH2)3CCH3]ClO4 (1a) (R = C6H5) reacts with NaBH4 on UV irradiation to yield HMn(CO)2(R2PCH2)3CCH3 (2a). [Mn(CO)3(R2PCH2)3CCH3]BR4 (1b) gives only decomposition products. Boiling of 1a or b and NaOH in acetone/water does nots give 2a but the new hydride HMn(CO)3(R2PCH2)2C(CH3)CH2PR2 (3a). This compound cannot be prepared on ultraviolet irradiation of a solution of 1a or b and NaBH4 in methyl alcohol or acetone. The analogous deutendes DMn(CO)2(R2)PCH2)3CCH3 (2b) and DMn(CO)3(R2PCH2)2C(CH3)CH2PR2 (3b) were also prepared. The new compounds were characterized by their IR, Raman, 1H NMR and 31P NMR spectra.

Darstellung und Charakterisierung einiger ω -Cyanalkyldiorganophosphane Preparation and Characterization of Some ω - Cyanoalkyldiorgano Phosphines

1992 ◽  
Vol 47 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Werner Wolfsberger ◽  
Wolfgang Burkart ◽  
Helmut Werner
Keyword(s):  
Nmr Spectra ◽  
Ir And Nmr Spectra ◽  
Elemental Analyses ◽  
New Compounds ◽  
Secondary Phosphines

Several routes for the preparation of ω-cyanoalkyldiorgano phosphines RR′P (CH2)nCHR″CN (R = CH3, C2H5, C3H7, i-C3H7, C4H9, i-C4H9, t -C4H9, C5H11, c-C5H9, c-C6H11 ; R′ = i-C3H7, t-C4H9, C6H5; R″ = H, Si(CH3)3; n = 1, 2, 3, 4) have been investigated: (1) reaction of lithium diorganophosphides with ω-chloroalkylnitriles, (2) quaternization of secondary phosphines with co-haloalkylnitriles followed by deprotonation of the resulting H -phosphonium halides with aqueous bases, (3) hydrophosphination of secondary phosphines with unsaturated nitriles, (4) reaction of trimethylsilyl phosphines with (y-chloroalkylnitriles followed by Me3SiCl-elimination, and (5) addition of acrylonitrile to trimethylsilyl phosphines. The reaction of 3-chloropropionitrile with trimethylsilyl phosphines leads to the formation of a mixture of the expected phosphine and the corresponding β-silylated derivative. A mechanistic interpretation of the last reaction is given. All new compounds were characterized by elemental analyses, IR and NMR spectra.

scholarly journals N-Disilanyl-phosphinimine, Darstellung und Eigenschaften / N-Disilanyl-phosphine Imines, Preparation and Properties

1975 ◽  
Vol 30 (11-12) ◽  
pp. 907-913 ◽  
Author(s):  
Werner Wolfsberger
Keyword(s):  
Elemental Analysis ◽  
Nmr Spectra ◽  
Ir And Nmr Spectra ◽  
Molecular Weights ◽  
Tertiary Phosphines ◽  
New Compounds

Several routes for the synthesis of N-pentamethyldisilanylphosphine imines have been investigated. The title compounds may be prepared by methylation of N-(2-chlorodisilanyl)-phosphine imines, from tertiary phosphines and pentamethyldisilanyl azide, from triorganophosphine imines and pentamethyldisilanyl chloride, or, by transsilylation, from the corresponding N-trimethylsilylphosphine imines. 22 new compounds were characterized by elemental analysis, molecular weights, IR and NMR spectra.

Dihydroxy-4′,5 tétraméthoxy-2′,3,7,8 flavone, et hydroxy-5 pentaméthoxy-2′,3,4′,7,8 flavone, deux nouveaux composés naturels isolés de Notholaenaaffinis (Ptéridophytes)

1979 ◽  
Vol 57 (14) ◽  
pp. 1901-1902 ◽  
Author(s):  
Maurice Jay ◽  
Jean Favre-Bonvin ◽  
Eckhard Wollenweber
Keyword(s):  
Natural Products ◽  
Nmr Spectra ◽  
New Compounds

The structures 4′,5-dihydroxy-2′,3,7,8-tetramethoxyflavone and 5-hydroxy-2′,3,4′,7,8-penta-methoxyflavone have been attributed to two new compounds isolated from a farinose exudate of Notholaenaaffinis; this result is derived from uv, ms, and nmr spectra of the natural products and their derivatives.

Chemie polyfunktioneller Liganden, 64 [1]. Über Hydridoiridium(III)-Komplexe des N.N-Bis(diphenylphosphino)-p-tolylamiii Chemistry of Polyfunctional Ligands, 64 [1]. On Hydridoiridium(III) Complexes of N,N-Bis(diphenylphosphino)-p-tolylamine

1981 ◽  
Vol 36 (5) ◽  
pp. 571-577 ◽  
Author(s):  
Jochen Ellermann ◽  
Leo Mader ◽  
Kurt Geibel
Keyword(s):  
Nmr Spectra ◽  
Oxidative Addition ◽  
H Nmr ◽  
New Compounds

H2 reacts with [Ir{(Ph2P)2N-p-C6H4CH3}2]Cl · 3 C6H6 (1) to give cis-[Ir(H)2{(Ph2P)2N-p-C6H4CH3}2]Cl · CH2Cl2 (2a). By reaction of 2a with NaBPh4 cis-[Ir(H)2{(Ph2P)2N-p-C6H4CH3}2]BPh4 (2 b) is obtained. Refluxing of 2a in CH2Cl2 yields trans-[lr(H)2{(Ph2P)2N-p-C6H4CH3}2]Cl · 1/2 CH2Cl2 (3a), which undegoes metatheses with NaBPh4 to trans-[Ir(H)2{(Ph2P)2N-p-C6H4CH3}2]BPh4 (3b). 3a is also formed by refluxing of 1 in methanol in the presence of oxygen. Oxidative addition of HCl to 1 and reaction with NaBPh4 yields trans-[Ir(H)(Cl){(Ph2P)2N-p-C6H4CH3}2]BPh4 (4b). The new compounds are characterised by their IR, Raman, 31P{1H} PFT and 1H NMR Spectra

Bis[dicarbonyl(cyclopentadienyl)ruthenium(I)] Komplexe / Bis[dicarbonyl(cyclopentadienyl)ruthenium(I)] Complexes

2002 ◽  
Vol 57 (9) ◽  
pp. 1017-1026 ◽  
Author(s):  
Herbert Schumann ◽  
Susanne Stenz ◽  
Frank Girgsdies ◽  
Stefan H. Mühle
Keyword(s):  
Single Crystal ◽  
Nmr Spectra ◽  
X Ray ◽  
Tert Butyl ◽  
New Compounds ◽  
C Nmr

Ru3(CO)12 reacts with 1-tert-butyl-2,4-cyclopentadiene (1), 1-trimethylsilyl-2,4-cyclopentadiene (2), 1-tert-butyl-3-methyl-2,4-cyclopentadiene (3), 1,3-di(tert-butyl)-2,4-cyclopentadiene (4), 1-iso-propyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (5), 1-tert-butyl-2,3,4,5-tetramethyl- 2,4-cyclopentadiene (6), 1-phenyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (7), 2,5- diphenyl-2,4-cyclopentadiene (8), or 2,3,4,5-tetraphenyl-2,4-cyclopentadiene (9) with formation of the corresponding bis[dicarbonyl(cyclopentadienyl) ruthenium(I)] complexes [RuCp# (CO)2]2 1a to 9a. The 1H and 13C NMR spectra of the new compounds 3a and 5a to 9a as well as the single crystal X-ray structures of 1a, 4a, 5a, 7a, 8a, and 9a are reported and discussed

Reactivity of Some 1(N)‐[(para‐R2)‐Phenacyl]–4(N)‐[(para‐R1)‐phenyl]‐1,2,4‐triazolium‐methylides by UV‐VIS, IR, and NMR Spectra and Molecular Modeling

2004 ◽  
Vol 37 (5) ◽  
pp. 457-467 ◽  
Author(s):  
Nicoleta Melniciuc‐Puică ◽  
Virgil Bărboiu ◽  
Şerban Filoti ◽  
Dana‐Ortansa Dorohoi
Keyword(s):  
Molecular Modeling ◽  
Nmr Spectra ◽  
Ir And Nmr Spectra

N-Chlorsilyl-triorganophosphinimine, Darstellung und Eigenschaften / N-Chlorosilyl Triorganophosphine Imines, Preparation and Properties

1977 ◽  
Vol 32 (9) ◽  
pp. 961-966 ◽  
Author(s):  
Werner Wolfsberger
Keyword(s):  
Molecular Weight ◽  
Nmr Spectra ◽  
Elemental Analyses ◽  
New Compounds

A series of N-chlorosilyl triorganophosphine imines have been prepared by transsilylation reactions of the corresponding N-trimethylsilyl triorganophosphine imines with halosilanes. The new compounds were characterized by elemental analyses, molecular weight determinations, IR and 1H and 31P NMR spectra.

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