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1.
Sheng Hua Liu 《Journal of organometallic chemistry》2003,683(2):331-336
Treatment of [Ru(CHCHCH2PPh3)X(CO)(PPh3)2]+ (X=Cl, Br) with KTp (Tp=hydridotris(pyrazolyl)borate) and NaBPh4 produced [TpRu(CHCHCH2PPh3)(CO)(PPh3)]BPh4. Reaction of RuHCl(CO)(PPh3)3 with HCCCH(OEt)2 produced Ru(CHCHCH(OEt)2)Cl(CO)(PPh3)2, which reacted with KTp to give TpRu(CHCHCHO)(CO)(PPh3). Treatment of [TpRu(CHCHCH2PPh3)(CO)(PPh3)]BPh4 with NaN(SiMe3)2 and benzaldehyde produced TpRu(CHCHCHCHPh)(CO)(PPh3). The later complex was also produced when TpRu(CHCHCHO)(CO)(PPh3) was treated with PhCH2PPh3Cl/NaN(SiMe3)2. The bimetallic complex [TpRu(CO)(PPh3)]2(μ-CHCHCHCHC6H4CHCHCHCH) was obtained from the reaction of [TpRu(CHCHCH2PPh3)(CO)(PPh3)]BPh4 with NaN(SiMe3)2 and terephthaldicarboxaldehyde. 相似文献
2.
Gabriele Albertin Stefano Antoniutti Sonia Pizzol 《Journal of organometallic chemistry》2004,689(9):1639-1647
Chloro-complexes [OsCl(N-N)P3]BPh4 (1, 2) [N-N=2,2′-bipyridine (bpy) and 1,10-phenanthroline (phen); P=P(OEt)3 and PPh(OEt)2] were prepared by allowing OsCl4(N-N) to react with zinc dust in the presence of phosphites. Treatment of the chloro-complexes 1, 2 with NaBH4 yielded, in the case of bpy, the hydride [OsH(bpy)P3]BPh4 (4) derivatives. Mono-phosphite [OsCl(bpy)2P]BPh4 (3) complexes were also prepared by reacting the [OsCl2(bpy)2]Cl compound with zinc dust in the presence of phosphite. Protonation reaction of the hydride [OsH(bpy)P3]+ (4) cations with Brønsted acid was studied and led to thermally unstable (above 0 °C) dihydrogen [Os(η2-H2)(bpy)P3]2+ (4*) derivatives. The presence of the H2 ligand is supported by variable-temperature NMR spectra and T1min measurements. Carbonyl [Os(CO)(bpy){P(OEt)3}3](BPh4)2 (5), nitrile [Os(CH3CN)(bpy){P(OEt)3}3](BPh4)2 (6), and hydrazine [Os(bpy)(NH2NH2){P(OEt)3}3](BPh4)2 (7) complexes were prepared by substituting the H2 ligand in the η2-H2 (4*) derivatives. Aryldiazene complex [Os(C6H5NNH)(bpy){P(OEt)3}3](BPh4)2 (8) was also obtained by allowing the hydride [OsH(bpy)P3]BPh4 to react with phenyldiazonium cation. 相似文献
3.
Aminophosphonium salts [Ph3PN(H)R]BPh4 ( 1 ) [R = C6H5CH2 ( 1a ), 4‐CH3C6H4CH2 ( 1b ), C6H5 ( 1c )] were obtained by allowing hydride IrHCl2(PPh3)2{P(OEt)3} to react first with triflic acid and then with the organic azide RN3. The compounds were characterized spectroscopically and by X‐ray crystal structure determination of [Ph3PN(H)CH2C6H4‐4‐CH3]BPh4 ( 1b ). A reaction path for the formation of aminophosphonium cations is also proposed. 相似文献
4.
《Journal of Coordination Chemistry》2012,65(16):2782-2790
Alkylation of [Pt2(µ-S)2(PPh3)4] with 2,4-dinitrophenylhydrazone-functionalized alkylating agents XC6H4C{=NNHC6H3(NO2)2}CH2Br (X?=?H, Ph) gives monoalkylated cations [Pt2(µ-S){µ-SCH2C{=NNHC6H3(NO2)2}C6H4X}(PPh3)4]+. An X-ray diffraction study on [Pt2(µ-S){µ-SCH2C{=NNHC6H3(NO2)2}Ph}(PPh3)4]BPh4 shows the crystal to be the Z isomer, with the phenyl ring and NHC6H3(NO2)2 groups mutually trans. 1H- and 31P{1H} NMR spectroscopic methods indicate a mixture of Z (major) and E (minor) isomers in solution, which slowly convert mainly to the E isomer. Reaction of [Pt2(µ-S)2(PPh3)4] with the dinitrophenylhydrazone of chloroacetone [ClCH2C{=NNH(C6H3(NO2)2}Me] and NaBPh4 gives [Pt2(µ-S){µ-SCH2C{=NNHC6H3(NO2)2}Me}(PPh3)4]BPh4, which exists as a single (E) isomer. 相似文献
5.
Valentine P Ananikov Denis A Malyshev Grigory G Aleksandrov 《Journal of organometallic chemistry》2003,679(2):162-172
A mechanistic study of the hydroselenation of alkynes catalyzed by Pd(PPh3)4 and Pt(PPh3)4 has shown that the palladium complex gives products of both SeH and SeSe bond addition to the triple bond of alkynes, while the platinum complex selectively catalyzes SeH bond addition. The key intermediate of PhSeH addition to the metal center, namely Pt(H)(SePh)(PPh3)2, was detected by 1H-NMR spectroscopy. The analogous palladium complex rapidly decomposes with evolution of molecular hydrogen. A convenient method was developed for the preparation of Markovnikov hydroselenation products H2CC(SePh)R, and the scope of this reaction was investigated. The first X-ray structure of the Markovnikov product H2CC(SePh)CH2N+HMe2·HOOCCOO− is reported. 相似文献
6.
Treatment of the osmabenzene [Os{CHC(PPh3)CHC(PPh3)CH} Cl2(PPh3)2]Cl ( 1 ) with excess 8‐hydroxyquinoline produces monosubstituted osmabenzene [Os{CH C(PPh3) CHC(PPh3)CH}(C9H6NO)Cl(PPh3)]Cl ( 2 ) or disubstituted osmabenzene [Os{CHC(PPh3)CHC(PPh3)CH} (C9H6NO)2]Cl ( 3 ) under different reaction conditions. Osmabenzene 2 evolves into cyclic η2‐allene‐coordinated complex [Os{CH?C(PPh3)CH=(η2‐C?CH2)}(C9H6NO)(PPh3)2]Cl ( 4 ) in the presence of excess PPh3 and NaOH, presumably involving a P? C bond cleavage of the metallacycle. Reaction of 4 with excess 8‐hydroxyquinoline under air affords the SNAr product [(C9H6NO)Os{CHC(PPh3)CHCHC} (C9H6NO)(PPh3)]Cl ( 5 ). Complex 4 is fairly reactive to a nucleophile in the presence of acid, which could react with water to give carbonyl complex [Os{CH?C(PPh3)CH?CH2}(C9H6NO) (CO)(PPh3)2]Cl ( 6 ). Complex 4 also reacts with PPh3 in the presence of acid and results in a transformation to [Os {CHC(PPh3)CHCHC}(C9H6NO)Cl (PPh3)2]Cl ( 7 ) and [Os{CH?C(PPh3) CH=(η2‐C?CH(PPh3))}(C9H6NO) Cl(PPh3)]Cl ( 8 ). Further investigation shows that the ratio of 7 and 8 is highly dependent on the amount of the acid in the reaction. 相似文献
7.
Gabriele Albertin Stefano Antoniutti Gianluigi Zanardo 《Journal of organometallic chemistry》2007,692(17):3706-3717
Mixed-ligand OsCl(Tp)L(PPh3) complexes 1 [Tp = hydridotris(pyrazolyl)borate; L = P(OMe)3, P(OEt)3 and PPh(OEt)2] were prepared by allowing OsCl(Tp)(PPh3)2 to react with an excess of phosphite. Treatment of chlorocomplexes 1 with NaBH4 in ethanol afforded hydride OsH(Tp)L(PPh3) derivatives 2. Stable dihydrogen [Os(η2-H2)(Tp)L(PPh3)]BPh4 derivatives 3 were prepared by protonation of hydrides 2 with HBF4 · Et2O at −80 °C. The presence of the η2-H2 ligand is supported by short T1 min values and JHD measurements on the partially deuterated derivatives. Treatment of the hydride OsH(Tp)[P(OEt)3](PPh3) complex with the aryldiazonium salt [4-CH3C6H4N2]BF4 afforded aryldiazene [Os(4-CH3C6H4NNH)(Tp){P(OEt)3}(PPh3)]BPh4 derivative 4. Instead, aryldiazenido [Os(4-CH3C6H4N2)(Tp)[P(OEt)3](PPh3)](BF4)2 derivative 5 was obtained by reacting the hydride OsH(Tp)[P(OEt)3](PPh3) first with methyltriflate and then with aryldiazonium [4-CH3C6H4N2]BF4 salt. Spectroscopic characterisation (IR, 15N NMR) by the 15N-labelled derivative strongly supports the presence of a near-linear Os-NN-Ar aryldiazenido group. Imine [Os{η1-NHC(H)Ar}(Tp){P(OEt)3}(PPh3)]BPh4 complexes 6 and 7 (Ar = C6H5, 4-CH3C6H4) were also prepared by allowing the hydride OsH(Tp)[P(OEt)3](PPh3) to react first with methyltriflate and then with alkylazides. 相似文献
8.
Substituted phosphines of the type Ph2PCH(R)PPh2 and their PtII complexes [PtX2{Ph2PCH(R)PPh2}] (R = Me, Ph or SiMe3; X = halide) were prepared. Treatment of [PtCl2(NCBut)2] with Ph2PCH(SiMe3)-PPh2 gave [PtCl2(Ph2PCH2PPh2)], while treatment with Ph2PCH(Ph)PPh2 gave [Pt{Ph2PCH(Ph)PPh2}2]Cl2. Reaction of p-MeC6H4C≡CLi or PhC≡CLi with [PtX2{Ph2PCH(Me)PPh2}] gave [Pt(C≡CC6H4Me-p)2-{Ph2PCH(Me)PPh2}] (X = I) and [Pt{Ph2PC(Me)PPh2}2](X = Cl),while reaction of p-MeC6H4C≡CLi with [Pt{Ph2PCH(Ph)PPh2}2]Cl2 gave [Pt{Ph2PC(Ph)PPh2}2]. The platinum complexes [PtMe2(dpmMe)] or [Pt(CH2)4(dpmMe)] fail to undergo ring-opening on treatment with one equivalent of dpmMe [dpmMe = Ph2PCH(Me)PPh2]. Treatment of [Ir(CO)Cl(PPh3)2] with two equivalents of dpmMe gave [Ir(CO)(dpmMe)2]Cl. The PF6 salt was also prepared. Treatment of [Ir(CO)(dpmMe)2]Cl with [Cu(C≡CPh)2], [AgCl(PPh3)] or [AuCl(PPh3)] failed to give heterobimetallic complexes. Attempts to prepare the dinuclear rhodium complex [Rh2(CO)3(μ-Cl)(dpmMe)2]BPh4 using a procedure similar to that employed for an analogous dpm (dpm = Ph2PCH2PPh2) complex were unsuccessful. Instead, the mononuclear complex [Rh(CO)(dpmMe)2]BPh4 was obtained. The corresponding chloride and PF6 salts were also prepared. Attempts to prepare [Rh(CO)(dpmMe)2]Cl in CHCl3 gave [RhHCl(dpmMe)2]Cl. Recrystallization of [Rh(CO)(dpmMe)2]BPh4 from CHCl3/EtOH gave [RhO2(dpmMe)2]BPh4. Treatment of [Rh(CO)2Cl2]2 with one equivalent of dpmMe per Rh atom gave two compounds, [Rh(CO)(dpmMe)2]Cl and a dinuclear complex that undergoes exchange at room temperature between two formulae: [Rh2(CO)2(μ-Cl)(μ-CO)(dpmMe)2]Cl and [Rh2(CO)2-(μ-Cl)(dpmMe)2]Cl.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
9.
Rafael Usón Luis A. Oro Daniel Carmona Maria Pilar Lamata 《Transition Metal Chemistry》1981,6(6):372-374
Summary The use of [RhCl(CO)(PPh3)]2 as a precursor for the synthesis of complexes of the types [Rh(CO)L2(PPh3)]A (A = [ClO4]– or [BPh4]–; L = pyridine type ligand) and [Rh(CO)(L-L)(PPh3)]A (A = [ClO4]– or [BPh4]–; L-L = bidentate nitrogen donor) and the preparation of several complexes of the types [Rh(CO)L(PPh3){P(p-RC6H4)3}]BPh4 and [Rh(CO)(phen)(PPh3){P(p-RC6H4)3}]A (A = [ClO4]– or [BPh4]–; R = H or Me) is described.Author to whom all correspondence should be directed. 相似文献
10.
Reactivity with Amines of Bis(cyanamide) and Bis(cyanoguanidine) Complexes of the Iron Triad
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Treatment of bis(cyanamide) [M(N≡CNEt2)2L4](BPh4)2 and bis(cyanoguanidine) [M{N≡CN(H)C(NH2)=NH}2L4](BPh4)2 complexes [M = Fe, Ru, Os; L = P(OEt)3] with an excess of amine RNH2 (R = nPr, iPr) affords mixed‐ligand complexes with cyanamide and amine [M(NH2R)(N≡CNEt2)L4](BPh4)2 ( 1a – 5a ) and [M(NH2R){N≡CN(H)C(NH2)=NH}L4](BPh4)2 ( 1b , 2b ). The complexes were characterized by spectroscopy and X‐ray crystal structure determination of [M(NH2iPr)(N≡CNEt2){P(OEt)3}4](BPh4)2 [M = Ru ( 3a ), Os ( 5a )]. 相似文献
11.
The new alkoxysilyl-functionalized alkynes [HC≡CCH2N(H)C(=O)N(H)(CH2)3Si(OEt)3] and [HC≡C(C6H4)–N(H)C(=O)N(H)(CH2)3Si(OEt)3] have been synthesized using literature methods. These have been reacted with Fe3(CO)12, Ru3(CO)12 and Co2(CO)8. With the iron carbonyl only decomposition was observed: with Ru3(CO)12 splitting of the alkynes into their parent components and formation of the complexes (μ-H)Ru3(CO)9[HC=N(CH2)3Si(OEt)3], (μ-H)Ru3(CO)9[C–C(C6H4)NH2] and (μ-H)2Ru3(CO)9[HC–CCH3] occurred. Finally, with Co2(CO)8 formation of complexes Co2(CO)6(HC2R) R=(C6H4)NH2, CH2NH(CO)NH(CH2)3Si(OEt)3, (C6H4)NH(CO)NH(CH2)3Si(OEt)3 containing the intact alkynes could be obtained. 相似文献
12.
Ledger AE Ellul CE Mahon MF Williams JM Whittlesey MK 《Chemistry (Weinheim an der Bergstrasse, Germany)》2011,17(31):8704-8713
Addition of the amine–boranes H3B ? NH2tBu, H3B ? NHMe2 and H3B ? NH3 to the cationic ruthenium fragment [Ru(xantphos)(PPh3)(OH2)H][BArF4] ( 2 ; xantphos=4,5‐bis(diphenylphosphino)‐9,9‐dimethylxanthene; BArF4=[B{3,5‐(CF3)2C6H3}4]?) affords the η1‐B? H bound amine–borane complexes [Ru(xantphos)(PPh3)(H3B ? NH2tBu)H][BArF4] ( 5 ), [Ru(xantphos)(PPh3)(H3B ? NHMe2)H][BArF4] ( 6 ) and [Ru(xantphos)(PPh3)(H3B ? NH3)H][BArF4] ( 7 ). The X‐ray crystal structures of 5 and 7 have been determined with [BArF4] and [BPh4] anions, respectively. Treatment of 2 with H3B ? PHPh2 resulted in quite different behaviour, with cleavage of the B? P interaction taking place to generate the structurally characterised bis‐secondary phosphine complex [Ru(xantphos)(PHPh2)2H][BPh4] ( 9 ). The xantphos complexes 2 , 5 and 9 proved to be poor precursors for the catalytic dehydrogenation of H3B ? NHMe2. While the dppf species (dppf=1,1′‐bis(diphenylphosphino)ferrocene) [Ru(dppf)(PPh3)HCl] ( 3 ) and [Ru(dppf)(η6‐C6H5PPh2)H][BArF4] ( 4 ) showed better, but still moderate activity, the agostic‐stabilised N‐heterocyclic carbene derivative [Ru(dppf)(ICy)HCl] ( 12 ; ICy=1,3‐dicyclohexylimidazol‐2‐ylidene) proved to be the most efficient catalyst with a turnover number of 76 h?1 at room temperature. 相似文献
13.
Perfluorocarboxylic acids (RFCOOH) (RF = CF3,C2F5 and (for Rh) C6F5) react with the species [M(NO)2(PPh3)2] (M = Ru, Os) and [M′(NO)(PPh3)3] (M′ = Rh, Ir) to yield new nitrosyl complexes [Ru(OCORF)3(NO)(PPh3)2], [OsH(OCORF)2(NO)(PPh3)2], [Os(OCORF)(NO)2(PPh3)2][OCORF], [Ir(OCORF)(NO)(PPh3)2][OCORF] and [Rh(OCORF)2(NO)(PPh3)2]. 相似文献
14.
Elizaveta P. Shestakova Aleksei B. Nikolskii 《Journal of organometallic chemistry》2005,690(14):3397-3404
Cationic methyl complex of rhodium(III), cis-[Rh(Acac)(PPh3)2(CH3)(Py)][BPh4] (1) as a single isomer with Py in the trans to PPh3 position, is formed upon the reaction of cis-[Rh(Acac)(PPh3)2(CH3)(CH3CN)][BPh4] with pyridine in methylene chloride solution.Complex 1 was characterized by elemental analysis and by 31P{1H} and 1H NMR spectra.Cationic pentacoordinate acetyl complexes, trans-[Rh(Acac)(PPh3)2(COCH3)][BPh4] (2) and trans-[Rh(BA)(PPh3)2(COCH3)][BPh4] (3), are prepared by action of carbon monoxide on cis-[Rh(Acac)(PPh3)2(CH3)(CH3CN)][BPh4] and cis-[Rh(BA)(PPh3)2(CH3)(CH3CN)][BPh4], respectively, in methylene chloride solutions.Complexes 2 and 3 were characterized by elemental analysis and by IR, 31P{1H}, 13C{1H} and 1H NMR. According to NMR data, 2 and 3 in solution are non-fluxional trigonal bipyramids with β-diketonate and acetyl ligands in the equatorial plane and axial phosphines.In solutions, 2 and 3 gradually isomerize into octahedral methyl carbonyl complexes trans-[Rh(Acac)(PPh3)2(CO)(CH3)][BPh4] (4) and trans-[Rh(BA)(PPh3)2(CO)(CH3)][BPh4] (5), respectively.Complexes 4 and 5 were characterized by IR, 31P{1H}, 13C{1H} and 1H NMR, without isolation.Upon the action of PPh3 on cis-[Rh(Acac)(PPh3)2(CH3)(CH3CN)][BPh4] and cis-[Rh(BA)(PPh3)2(CH3)(CH3CN)] [BPh4], reductive elimination of the methyl ligand as a phosphonium salt, [CH3PPh3][BPh4], occurs to give square planar rhodium(I) complexes [Rh(Acac)(PPh3)2] and[Rh(BA)(PPh3)2], respectively. The reaction products were identified in the reaction mixtures by 31P{1H} and 1H NMR. 相似文献
15.
Wolfgang A. Herrmann Christine Bauer Klaus K. Mayer 《Journal of organometallic chemistry》1982,236(1):C18-C22
The mixed dinitrogen-isocyanide complexes mer-[ReCl(N2)(CNMe)-{P(OMe)3}3] (I) and [ReCl(N2)(CNMe)(PPh3) {P(OEt)3}2] (II) are obtained by a novel route through reactions of CNMe with the organodiazenido species [ReCl2(NNCOPh) {P(OMe)3 }3] and [ReCl2(NNCOPh)(PPh3){P(OEt)3 }2] (III, newly synthesized), whereas mer-[ReCl(N2)(PPh3) {P(OMe)3 }3] (IV) (which gives I by reaction with CNMe) is formed in the reaction of [OPh)(PPh3)2] with P(OMe)3; the structure of complex I is authenticated by X-ray analysis. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(15):1387-1393
Complexes of general formula [ReOX2{(C5H4N)CH(O)CH2(C5H4N)}] (X?=?Cl,?I) were prepared by reaction of trans-[ReOCl3(PPh3)2] and trans-[ReOI2(OEt)(PPh3)2] with cis-1,2-di-(2-pyridyl)ethylene (DPE) in ethanol and benzene in air. The coordinated DPE ligand undergoes addition of water at the ethylenic carbon atoms, and the (C5H4N)CH(O)CH2(C5H4N) moiety acts as a uninegative terdentate N,O,N-donor ligand. X-ray crystal structures of both complexes have been determined and show distorted octahedral geometry at the rhenium(V) centre. 相似文献
17.
The reactions of aminophosphines with Group 6 metal carbonyls afford both mono-substituted and disubstituted complexes. The reaction of Ph2PN(H)C6H11 with molybdenum tetracarbonyl derivative gives a mixture of cis and trans-isomers. The reaction of Ph2PN(H)Ph with Pd(COD)Cl2 leads to the PN bond cleavage to give chloro bridged dimer, [Pd(PPh2O)(PPh2OH)(μ-Cl)]2, whereas with Pt(COD)Cl2, disubstituted cis-[PtCl2{PPh2N(H)R}2]2 was obtained. The reaction of Ph2PN(H)C6H11 with RuCl2(DMSO)4 or RuCl2(PPh3)3 leads to the formation of ionic complex, [RuCl{Ph2PN(H)C6H11}3]Cl. 相似文献
18.
Oguejiofo T. Ujam Ogochukwu E. Offie Pius O. Ukoha Allen G. Oliver Joshua I. Ume Rhonda L. Stoddard 《Journal of Coordination Chemistry》2016,69(19):2807-2818
The reactivity of the metalloligand [Pt2(μ-S)2(PPh3)4] with the boron-functionalized alkylating agents BrCH2(C6H4)B(OR)2 (R = H or C(CH3)2) was investigated by electrospray ionization mass spectrometry (ESI-MS) in real time using pressurized sample infusion (PSI). The macroscopic reaction of [Pt2(μ-S)2(PPh3)4] with one mole equivalent of alkylating agents BrCH2(C6H4)B{OC(CH3)2}2 and BrCH2(C6H4)B(OH)2 gave the dinuclear monocationic μ-sulfide thiolate complexes [Pt2(μ-S){μ-SCH2(C6H4)B{OC(CH3)2}2}(PPh3)4]+ and [Pt2(μ-S){μ-S+CH2(C6H4)B(OH)(O?)}(PPh3)4]. The products were isolated as the [PF6]? salt and zwitterion, respectively, and fully characterized by ESI-MS, IR, 1H and 31P NMR spectroscopy, and single-crystal X-ray structure determinations. 相似文献
19.
The reaction of IrH3(PPh3)2 with p-substituted aryldiazonium salts gives the compounds [IrH2(NHNC6H4R)(PPh3)2]+BF4- at low temperature (-10°C) and the o-metalated complexes [IC6H3R)(PPh3)2]+BF4- (R F, OCH3) at 40–50°C. The reactions of the o-metalated complexes with CO, PPh3, NaI and HCl have been studied. 相似文献
20.
The reactions of [RuHCl(CO)(PPh3)3] and [(C6H6)RuCl2]2 with 2-benzoylpyridine have been examined, and two novel ruthenium(II) complexes – [RuCl(CO)(PPh3)2(C5H4NCOO)] and [RuCl2(C12H9NO)2] – have been obtained. The compounds have been studied by IR and UV–Vis spectroscopy, and X-ray crystallography. The molecular orbital diagrams of the complexes have been calculated with the density functional theory (DFT) method. The spin-allowed singlet–singlet electronic transitions of the compounds have been calculated with the time-dependent DFT method, and the UV–Vis spectra of the compounds have been discussed on this basis. 相似文献