Oxidative Addition Reactions of P(CN)3, P(NCO)3 and P(NCS)3 to (η5-C5Me5)Co(CO)2

1984 ◽  
Vol 39 (2) ◽  
pp. 142-144 ◽  
Author(s):  
S. Delgado ◽  
J. Macazaga ◽  
J. R. Masaguer
Keyword(s):  
Elemental Analysis ◽  
Nmr Spectra ◽  
Oxidative Addition ◽  
Addition Reactions ◽  
H Nmr

The phosphorus pseudohalogens P(CN)3, P(NCO)3 and P(NCS)3 react with (η5-C5Me5)Co(CO)2 to give the complexes (η5-C5Me5)Co(CO)XPX2 (X = CN, NCO, NCS). All the compounds are characterized by elemental analysis, IR. electronic and 1H NMR spectra

1,1,2,3,4,5 - Hexahydro Tellurophene [C4H8Te(II)] and 1,3-Dihydro-2λ4-Benzotellurole [C8H8Te(II)] Derivatives

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Rajesh Kumar ◽  
Sangeeta Bajpai
Keyword(s):  
Spectral Data ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Oxidative Addition ◽  
Addition Reactions ◽  
Tellurium Atom ◽  
Oxidation Number ◽  
H Nmr ◽  
Data Table ◽  
Convenient Route

Convenient route of synthesis of the type R<sub>2</sub>TeX′SY and R<sub>2</sub>Te(CH<sub>3</sub>)X′c were dove loved by the reactions of R<sub>2</sub>Te(II) [R<sub>2</sub> = C<sub>4</sub>H<sub>8</sub>, C<sub>8</sub>H<sub>8</sub>] with IX′S (X′S= Cl, Br), RI (R = CH<sub>3</sub>, C<sub>2</sub>H<sub>5</sub>) and CH<sub>3</sub>X″c (X″c = Cl, Br, NO<sub>3</sub>, C<sub>6</sub>H<sub>5</sub>OCO).These complexes have been characterised through elemental analysis (Table 1) and <sup>1</sup>H NMR spectral data (Table 2). The <sup>1</sup>H NMR spectra of C<sub>4</sub>H<sub>8</sub>TeICl, C<sub>4</sub>H<sub>8</sub>TeIBr, C<sub>4</sub>H<sub>8</sub>TeCH<sub>3</sub>I, C<sub>4</sub>H<sub>8</sub>TeCH<sub>3</sub>Cl, C<sub>4</sub>H<sub>8</sub>TeCH<sub>3</sub>Br, C<sub>4</sub>H<sub>8</sub>TeCH<sub>3</sub>NO<sub>3</sub>, C<sub>4</sub>H<sub>8</sub>TeCH<sub>3</sub>OCOC<sub>6</sub>H<sub>5</sub>, C<sub>8</sub>H<sub>8</sub>TeCH<sub>3</sub>I, and C<sub>8</sub>H<sub>8</sub>Te -C<sub>2</sub>H<sub>5</sub>I have been recorded in CDCl<sub>3</sub> at 300 MHz. The study indicates that the heterocycles of C<sub>4</sub>H<sub>8</sub>Te(II) and C<sub>8</sub>H<sub>8</sub>Te(II) undergo oxidative addition reactions readily resulting in the increase in the oxidation number of central tellurium atom.

Synthesis and Antituberculotic Activity of Some Substituted 3-Arylamino-5-cyano-2-pyrazinecarboxamides

1995 ◽  
Vol 60 (7) ◽  
pp. 1236-1241 ◽  
Author(s):  
Martin Doležal ◽  
Jiří Hartl ◽  
Antonín Lyčka ◽  
Vladimír Buchta ◽  
Želmíra Odlerová
Keyword(s):  
Nucleophilic Substitution ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Substituted Anilines ◽  
H Nmr

Nucleophilic substitution of 3-chloro-5-cyano-2-pyrazinecarboxamide by substituted anilines afforded substituted 3-arylamino-5-cyano-2-pyrazinecarboxamides I-X. The structures of compounds were confirmed by elemental analysis, UV, IR and 1H NMR spectra. The assessment of in vitro antimycotic and antimycobacterial activities of the compounds was carried out. The highest antituberculotic activity against M. tuberculosis in this series was shown by 3-anilino- 5-cyano-2-pyrazinecarboxamide (I), whose efficacy was the same as that of pyrazinecarboxamide.

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

Reactions of n-C5H5Co(CO)2 and n-Me3SiC5H4Co(CO)2 with (XCN)2 and X(CN)2 (X = S or Se)

1982 ◽  
Vol 37 (3) ◽  
pp. 292-298 ◽  
Author(s):  
Moisés Morán ◽  
Augusto Ibáñez
Keyword(s):  
Elemental Analysis ◽  
Nmr Spectra ◽  
Polar Solvents ◽  
Mixed Complexes ◽  
H Nmr ◽  
Linkage Isomerism

Abstract The pseudohalogens (XCN)2 (X = S or Se) react with n-C5H5Co(CO)2 and n-Me3SiC5H4Co(CO)2 with formation of the 18 electron complexes, RCo(CO)(XCN)2 (R = n-C5H5 or n-Me3SiC5H4). By reactions with X(CN)2 (X = S or Se), the cyclopentadienyl cobalt dicarbonyls are transformed into the mixed complexes, RCo(CO)(CN)(XVN) (R = n-C5H5 or n-Me3SiC5H4. All the compounds are characterized by elemental analysis, IR, electronic and 1H NMR spectra. The thiocyanogen derivatives undergo linkage isomerism (N→S) in polar solvents.

A Novel Reductive Cross-coupling Reaction of 2-nitrobenzoic Hydrazides and Aldehydes or Ketones Promoted by the Low-valence Titanium Reagent: An Access to 2,3,4,5-tetrahydro-1H-1,3,4-benzotriazepine-5-one Derivatives

2005 ◽  
Vol 2005 (9) ◽  
pp. 553-555 ◽  
Author(s):  
Daqing Shi ◽  
Chunling Shi ◽  
Liangce Rong ◽  
Juxian Wang ◽  
Qiya Zhuang ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Nmr Spectra ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Reductive Coupling ◽  
Facile Synthesis ◽  
H Nmr ◽  
Cross Coupling Reaction

A short and facile synthesis of a series of 2,3,4,5-tetrahydro-1H-1,3,4-benzotriazepine-5-one derivatives was accomplished in good yields via the intermolecular reductive coupling reaction of 2-nitrobenzoic hydrazides and aldehydes or ketones promoted by the low-valence titanium reagent (TiCl4/Zn system). Structures were established on the basis of elemental analysis, IR and 1H NMR spectra.

N-Tribromphosphazo-Verbindungen / N-Tribromophosphaza-compounds

1971 ◽  
Vol 26 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Herbert W. Roesky ◽  
Graalf Remmers
Keyword(s):  
Ir Spectra ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Chemical Behavior ◽  
H Nmr

By reaction of N-sulfuroxideimides with phosphorus-pentabromide the compounds R-SO2NPBr3 (R = CH3 , CF3 , C6H5, p-Cl-C6H4, and p-CH3C6H4) were prepared. Reactions of hexamethyldisilazane and N- (dimethyl) -trimethylsilylamide resulted in the formation of R-SO2NPBr2N (CH3)2, (R = CH3, C6H5), and R-SO2NPBr2NHSi(CH3)3 (R = CF3, p-CH3-C6H4). The properties and the chemical behavior of these compounds are described. Results of IR-spectra, as well as 31P-, 19F-, and 1H-NMR-spectra and elemental analysis characterize the compounds.

Oxidative Addition of Pseudohalogen to [P(OPh)3]4Ni

1983 ◽  
Vol 38 (9) ◽  
pp. 1069-1071
Author(s):  
M. Bobadilla ◽  
M. Morán
Keyword(s):  
Elemental Analysis ◽  
Electronic Spectra ◽  
Title Compound ◽  
Oxidative Addition ◽  
H Nmr ◽  
Cyanogen Halides

Abstract The title compound reacts with cyanogen halides, XCN (X = Br or I) to give the complexes L2(X)(CN)Ni (L = P(OPh)3, X = Br or I). The oxidative addition of (SCN)2 and (SeCN)2 to the same compound results in the formation of L2Ni(XCN)2 (X = S or Se).All the complexes have been characterized by elemental analysis, and IR, 1H NMR and electronic spectra.

scholarly journals Nanoparticles of novel organotin(IV) complexes bearing phosphoric triamide ligands

2013 ◽  
Vol 4 ◽  
pp. 94-102 ◽  
Author(s):  
Zahra Shariatinia ◽  
Ebadullah Asadi ◽  
Vahid Tavasolinasab ◽  
Khodayar Gholivand
Keyword(s):  
Fluorescence Spectroscopy ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Fluorescence Spectra ◽  
Sem Micrographs ◽  
H Nmr ◽  
Phosphoric Triamide ◽  
C Nmr

Four novel organotin(IV) complexes containing phosphoric triamide ligands were synthesized and characterized by multinuclear (1H, 31P, 13C) NMR, infrared, ultraviolet and fluorescence spectroscopy as well as elemental analysis. The 1H NMR spectra of complexes 1–4 proved that the Sn atoms adopt octahedral configurations. The nanoparticles of the complexes were also prepared by ultrasonication, and their SEM micrographs indicated identical spherical morphologies with particles sizes about 20–25 nm. The fluorescence spectra exhibited blue shifts for the maximum wavelength of emission upon complexation.

scholarly journals Triphenylphosphine complexes of cadmium(II) perchlorate, nitrate, and trifluoroacetate preparation, characterization, and spectral studies

1981 ◽  
Vol 59 (23) ◽  
pp. 3267-3272 ◽  
Author(s):  
Ram G. Goel ◽  
Narendra K. Jha
Keyword(s):  
Solid State ◽  
Elemental Analysis ◽  
Vibrational Spectra ◽  
Nmr Spectra ◽  
Ionic Species ◽  
Spectral Studies ◽  
Spectral Measurements ◽  
Coordinate Structure ◽  
H Nmr ◽  
Metal Ligand

1:2 complexes, CdX2(PPh3)2, where X = ClO4, NO3, CF3CO2 and 1:1 complex, Cd(CF3CO2)2PPh3, have been isolated and characterized by elemental analysis and by vibrational and 31P—{lH} nmr spectral measurements. Conductance measurements show that the complexes behave as non-ionic species in dichloromethane. The vibrational spectra of the perchlorato complex are consistent with a six-coordinate structure in the solid state as well as in solution but it is difficult to deduce the structures of the nitrato and trifluoroacetato complexes from the spectral data. Assignments for the metal–ligand stretching frequencies for all the four complexes have been proposed. The 3lP—{1H} nmr spectra of the four complexes have been discussed. Formation of the 1:3 and 1:4 complexes, Cd(ClO4)2(PPh3)3 and Cd(ClO4)2(PPh3)4, in solution, has also been established by 31P—{lH} nmr spectral measurements.

Synthesis and Antituberculotic Activity of 5-Alkyl-6-chloro-2-pyrazinecarboxamides and Corresponding Thioamides

1996 ◽  
Vol 61 (7) ◽  
pp. 1109-1114 ◽  
Author(s):  
Jiří Hartl ◽  
Martin Doležal ◽  
Jana Krinková ◽  
Antonín Lyčka ◽  
Želmíra Odlerová
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Elemental Analysis ◽  
Nmr Spectra ◽  
Antimycobacterial Activity ◽  
Partial Hydrolysis ◽  
Alkanoic Acid ◽  
H Nmr ◽  
Homolytic Alkylation ◽  
Lawesson's Reagent

Homolytic alkylation of 6-chloro-2-pyrazinecarbonitrile by alkanoic acid and subsequent partial hydrolysis afforded 5-alkyl-6-chloro-2-pyrazinecarboxamides 1a-1e. Reaction of amides 1a-1e by Lawesson's reagent afforded corresponding thioamides 2a-2e. The structure of compounds was confirmed by elemental analysis, IR and 1H NMR spectra. The assessment of in vitro antimycobacterial activity of the compounds was carried out. The highest antituberculotic activity against Mycobacterium tuberculosis and other mycobacterial strains in this series was shown by 5-(1,1-dimethylethyl)-6-chloro-2-pyrazinecarbothioamide (2e).

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