共查询到20条相似文献,搜索用时 62 毫秒
1.
F.Y. Petillon J.L. Le Quere J. Roue J.E. Guerchais D.W.A. Sharp 《Journal of organometallic chemistry》1981,204(2):207-210
The reaction between [(η5-C5H5)MoH(CO)3] and disulphides gives dimeric or trimeric complexes depending upon the conditions. The syntheses of the novel trinuclear molybdenum carbonyl complex [{Mo(η5-C5H5)(SR)(μ-CO)(CO)}3] (R = Me), and dinuclear compounds [Mo2(η5-C5H5)(μ-SR)3(CO)4] (R = Me) and [Mo2(η5-C5H5)2(SR)2(CO)2(μ-SR)(μ-Br)] (R = Me or Ph) are reported. 相似文献
2.
Junpei Kuwabara 《Journal of organometallic chemistry》2005,690(2):269-275
[(η5-C5H5)ZrCl2(η5-C5H4)CMe2(C5H5)] reacted with Co2(CO)8 to produce a heterodinuclear Zr(IV)-Co(I) complex [(η5-C5H5)ZrCl2(η5-C5H4)CMe2(η5-C5H4)Co(CO)2] (3). Complex 3 underwent oxidative addition of I2 to give [(η5-C5H5)ZrCl2(η5-C5H4)CMe2(η5-C5H4)CoI2(CO)] (4) having Zr(IV) and Co(III) centers. The carbonyl ligand of 4 was easily replaced with P(OMe)3 and PPh3 to afford [(η5-C5H5)ZrCl2(η5-C5H4)CMe2(η5-C5H4)CoI2(L)] (5: L = P(OMe)3, 6: L = PPh3). Structures of 5 and 6 were determined by X-ray crystallography. These Zr-Co heterodinuclear complexes catalyzed polymerization of ethylene and propylene. 相似文献
3.
Jan Honzí?ek Abhik Mukhopadhyay Carlos C. Romão 《Journal of organometallic chemistry》2010,695(5):680-2319
The synthesis of new cyclopenta[l]phenanthrenyl complexes [(η5-C17H10Me)(η3-C3H5)Mo(CO)2] and [(η5-C17H9(COOMe)N(CH2)4)(η3-C3H5)Mo(CO)2] is described. Although these compounds are structural analogues their reactivity is different. Protonation of [(η5-C17H10Me)(η3-C3H5)Mo(CO)2] gives a stable ionic compound [(η5-C17H10Me)Mo(CO)2(NCMe)2][BF4] while its analogue containing both tertiary amino and carboxylic ester groups [(η5-C17H9(COOMe)N(CH2)4)(η3-C3H5)Mo(CO)2] decomposes under the same conditions. [(η5-C17H10Me)Mo(CO)2(NCMe)2][BF4] reacts with cyclopentadiene to give a stable η4-complex [(η4-C5H6)(η5-C17H10Me)Mo(CO)2][BF4] that was successfully oxidized to the Mo(IV) dicationic compound [(η5-C5H5)(η5-C17H10Me)Mo(CO)2][Br][BF4]. 相似文献
4.
The new methylidene trinickel cluster complexes, [RCNi3(η5-C5H53] (R CMe3 or SiMe3) and [Me3SiCNi3(η5-C5H5)2(η5-C5H4CH2SiMe3)] have been isolated in low yield from reactions between nickelocene and the corresponding alkyllithium reagents, RCH2Li. The compounds [RCNi3(η5-C5H5)3] (R Ph, CMe3 or SiMe3) have also been obtained by treatment of the σ-alkylnickel complexes [(η5-C5H5)Ni(CH2R)(PPh3)] with n-BuLi in the presence of an excess of nickelocene, but under similar conditions [(η5-C5H5)Ni(CH2C1OH7-2)-(PPh3)] (where C1OH7-2 2-naphthyl) failed to give [2-C1OH7CNi3(η5-C5H5)3]. The attempted synthesis of [(η5-C5H5)Ni(CH2CCH)(PPh3)] from [(η5-C5H5)-NiBr(PPh3)] and CHCCH2MgBr gave only [(η5-C5H5)Ni(CCMe)(PPh3)] by an unusual rearrangement reaction. 相似文献
5.
Christopher S. Griffith Brian W. Skelton Allan H. White 《Journal of organometallic chemistry》2005,690(14):3410-3421
The reactivity of [Ru3Mo(μ4-η2-CC)(μ-CO)3(CO)2(η-C5H4R)3(η-C5H5)] (R = H; Me) have been investigated, initially to elucidate the nature of the starting material, and, latterly, to define the reactivity of an interesting ethane-1,2-bis(ylidyne) species. While the mixed RuMo clusters were unreactive towards simple electrophiles and carbonyl substitution by phosphine ligands they did react with atmospheric oxygen or carbon monoxide to give substantially different products. In all instances oxygen was incorporated either at the metal centre or at the C2 fragment. High-pressure carbonylations yielded [Ru3(μ-CO)3(η-C5H5)3(μ3-C-C(O)O{Ru(CO)2(η-C5H5)})] and [{Ru2(μ-CO)(CO)2(η-C5H4Me)2}(μ4-η2-CC){Ru(CO)(η-C5H4Me)Mo(η-C5H5)(=O)(μ-O)}], an ethane-1,2-bis(ylidene) complex, this exemplifying a relatively rare raft geometry which further reacted with Cl2CCCl2 to give [Mo3(μ4-C2(Ru(CO)2(η-C5H4Me))(CO)(μ-CO)(η-C5H5)3(Cl)2] having a similar geometry and undergone halogenation. In order to extend the extant examples of these raft clusters we explored the reaction of [{Ru(CO)2(η-C5H4R)2}2(μ-C2)] with [{Ru(CO)2(η-C5H5)2}2] to provide a rational synthetic pathway leading to very reactive [Ru(μ4-η2-CC)(μ2-CO)2(CO)4(η-C5H4Me)2(η-C5H4R)2] rafts. 相似文献
6.
Andrew F. Dyke Selby A.R. Knox Pamela J. Naish 《Journal of organometallic chemistry》1980,199(2):C47-C49
Treatment of [Ru2(CO)(μ-CO) {μ-C(O)C2Ph2} (η-C 5H5)2] with allene in toluene at 100°C displaces diphenylacetylene and produces [Ru(CO)(η-C5H5)-{η3-C3H4Ru(CO)2(η-C5H5)}]; upon protonation a 1-methylvinyl cation [Ru2(CO)2(μ-CO){μ-C(Me)CH2}(η-C5H5)2]+ is formed which undergoes nucleophillic attack by hydride to yield the μ-dimethylcarbene complex [Ru2(CO)2-(μ-CO)(μ-CMe2)(η-C5H5)2]. 相似文献
7.
《Journal of organometallic chemistry》1987,331(3):357-377
The oxidative cleavage of [Fe2(η-C5H5)2(CO)4-n(CNMe)n] (n=0−2) by 2AgX gives mononuclear products. It is shown to be a two-electron process in most solvents but a one-electron process in acetonitrile. The two-electron oxidations proceed by way of adducts such as [Fe2(η-C5H5)2(CO)(CNMe)(μ-CO){;μ-CN(Me)AgPPh3};]BF4 which are isolable when n = 2, detectable when n = 1 and postulatetd when n = 0. The one-electron process gives no adducts, and 1AgX cleaves all of the substrate to [Fe(η-C5H5)(CO)(L)(NCMe)]+ and [Fe(η-C5H5)(CO)(L)]. (L CO or CNME). The latter may combine or react with added CHBr3 to give [Fe(η-C5H5)(CO)(L)Br]. The structure of [Fe(η-C5H5)(CO)2-(CNMe)]BF4 has been determined by X-ray diffraction. 相似文献
8.
Transition Metal Substituted Acylphosphanes and Phosphaalkenes. 17. Synthesis and Structure of the μ-Isophosphaalkyne Complexes [(η5-C5H5)2(CO)2Fe2(μ-CO)(μ-C?PC6H2R3)] (R = Me, iPr, tBu) . Condensation of (η5-C5H5)2(CO)2Fe2(μ-CO)(μ-CSMe)}+SO3CF3? ( 6 ) with 2,4,6-R3C6H2PH(SiMe3) ( 7 ) ( a : R = Me, b : R = iPr, c : R = tBu) affords the complexes (η5-C5H5)2(CO)2Fe2(μ-CO)(η-C?PC6H2R3-2,4,6) ( 9 a–c ) with edge-bridging isophosphaalkyne ligands as confirmed by the x-ray structure analysis of 9 a . 相似文献
9.
Sanjiv Prashar Mariano Fajardo Iván Dorado Antonio Otero 《Journal of organometallic chemistry》2004,689(7):1304-1314
The reactivity of dinuclear niobium and tantalum imido complexes with the isocyanide compound 2,6-Me2C6H3NC has been studied. The trialkyl complexes [{NbR3(CH3CN)}2(μ-1,3-NC6H4N)], [{NbR3(CH3CN)}2(μ-1,4-NC6H4N)] and [{TaR3(CH3CN)}2(μ-1,4-NC6H4N)] (R=CH2SiMe3) gave [{Nb(η2-RCNAr)2R}2(μ-1,3-NC6H4N)] (1), [{Nb(η2-RCNAr)2R}2(μ-1,4-NC6H4N)] (2) and [{Ta(η2-RCNAr)2R}2(μ-1,4-NC6H4N)] (3) (R=CH2SiMe3; Ar=2,6-Me2C6H3), from the isocyanide insertion in two of the metal alkyl carbon bonds. The reaction of the isocyanide reagent with the di-alkyl mono-cyclopentadienyl derivatives [{Nb(η5-C5H4SiMe3)R2}2(μ-1,3-NC6H4N)] (R=Me, CH2Ph, CH2SiMe3), [{Nb(η5-C5H4SiMe3)R2}2(μ-1,4-NC6H4N)] (R=Me, CH2Ph (4), CH2SiMe3) and [{Ta(η5-C5Me5)(CH2SiMe3)2}2(μ-1,4-NC6H4N)] yielded [{Nb(η5-C5H4SiMe3)(η2-RCNAr)R}2(μ-1,3-NC6H4N)] (R=Me (5), CH2Ph (6), CH2SiMe3 (7)), [{Nb(η5-C5H4SiMe3)(η2-RCNAr)R}2(μ-1,4-NC6H4N)] (R=Me (8), CH2Ph (9), CH2SiMe3 (10)) and [{Ta(η5-C5Me5)(η2-Me3SiCH2CNAr)CH2SiMe3}2(μ-1,4-NC6H4N)] (11) (Ar=2,6-Me2C6H3), respectively, from a single insertion process. The reaction with the mono-alkyl complex [{Nb(η5-C5H4SiMe3)(Me)Cl}2(μ-1,4-NC6H4N)] gave [{Nb(η5-C5H4SiMe3)(η2-MeCNAr)Cl}2(μ-1,4-NC6H4N)] (12), produced from the isocyanide insertion in the metal-alkyl carbon bond. The alkyl-amido complex [{Nb(η5-C5H4SiMe3)(Me)NMe2}2(μ-1,4-NC6H4N)] gave, from the preferential isocyanide insertion in the metal-amide nitrogen bond, [{Nb(η5-C5H4SiMe3)(η2-Me2NCNAr)Me}2(μ-1,4-NC6H4N)] (13). The molecular structure of one of the alkyl precursors, [{Nb(η5-C5H4SiMe3)(CH2Ph)2}2(μ-1,4-NC6H4N)] (4), has been determined. 相似文献
10.
《Journal of organometallic chemistry》1986,308(2):153-166
The reaction of 2-borolenes and 3-borolenes C4H6BR (R = Ph, Me, C6H11, OMe) with Mn, Fe, and Co carbonyls leads to dehydrogenating complexation with formation of simple, i.e. C-unsubstituted (η5-borole)metal complexes. Thus, Mn2(CO)10 gives the triple-decked complexes (μ-η5-C4H4BR)[Mn(CO)3]2 (R = Ph, OMe). By irradiation of Fe(CO)5 the half-sandwich complexes Fe(CO)3 (η5-C4H4BR) (R = Ph, Me, C6H11, OMe) are formed, whereas Co2(CO)8 yields the dinuclear complexes (μ-CO)2[Co(CO)(η5-C4H4BR)]2 (Co-Co) (R = Ph, Me). A low-temperature X-ray structure determination of Fe(CO)3(η5-C4H4BPh) is described in detail. 相似文献
11.
《Journal of organometallic chemistry》2003,665(1-2):226-232
Photolysis of a benzene solution containing [Fe3(CO)9(μ3-E)2] (E=S, Se), [(η5-C5R5)Fe(CO)2(CCRI)] (R=H, Me; RI=Ph, Fc), H2O and Et3N results in formation of new metal clusters [(η5-C5R5)Fe3(CO)6(μ3-E)(μ3-ECCH2RI)] (R=H, RI=Ph, E=S 1 or Se 2; R=Me, RI=Ph, E=S 3 or Se 4; R=H, RI=Fc, E=S 5; R=Me, RI=Fc, E=S 6 or Se 7). Reaction of [Fe3(CO)9(μ3-S)2]with [(η5-C5R5)Mo(CO)3(CCPh)] (R=H, Me), under same conditions, produces mixed-metal clusters [(η5-C5R5)MoFe2(CO)6(μ3-S)(μ-SCCH2Ph)] (R=H 8; R=Me 9). Compounds 1–9 have been characterised by IR and 1H and 13C-NMR spectroscopy. Structures of 1, 5 and 9 have been established crystallographically. A common feature in all these products is the formation of new C-chalcogen bond to give rise to a (ECCH2RI) ligand. 相似文献
12.
A.N. Nesmeyanov G.G. Aleksandrov A.B. Antonova K.N. Anisimov N.E. Kolobova Yu.T. Struchkov 《Journal of organometallic chemistry》1976,110(2):C36-C38
Three novel stable complexes of manganese were prepared by interaction of [(η5-C5H5)Mn(CO)2 (THF)] with phenylacetylene. X-ray structure analysis of two of the complexes established the presence of a phenylvinylidene ligand. In [(η5-C5H5Mn(CO)2(CCHPh)] this ligand forms an unusual double MnC bond and in [(η5-C5H5)Mn2(CO)4(CCHPh)] it acts as a bridge strengthening the MnMn bond. 相似文献
13.
《Journal of organometallic chemistry》2002,649(1):21-24
The complexes [(η5-C5H5)Fe(CO)2(SCCR)] (R=tBu, SiMe3) have been obtained by reaction of [(η5-C5H5)Fe(CO)2I] and the corresponding LiSCCR. These are the first examples of mononuclear iron compounds containing alkynethiolate ligands. The crystal structure of [(η5-C5H5)Fe(CO)2(SCCSiMe3)] has been determined by X-ray diffraction. The role of [(η5-C5H5)Fe(CO)2(SCCSiMe3)] as a metalloligand in its reactions with metal carbonyls has been explored. 相似文献
14.
Heteroleptic rhodium(I) complexes with the general formulations [(η4-C8H12)Rh(L)] [η4-C8H12 = 1,5-cyclooctadiene; L = 5-(4-cyanophenyl)dipyrromethene, cydpm; 5-(4-nitrophenyl)dipyrromethene, ndpm; and 5-(4-benzyloxyphenyl)dipyrromethene, bdpm; 5-(4-pyridyl)dipyrromethene, 4-pyrdpm; 5-(3-pyridyl)dipyrromethene, 3-pyrdpm] have been synthesized. The complex [(η4-C8H12)Rh(4-pyrdpm)] have been used as a synthon in the construction of homo-bimetallic complex [(η4-C8H12)Rh(μ-4-pyrdpm)Rh(η5-C5Me5)Cl2] and hetero-bimetallic complexes [(η4-C8H12)Rh(μ-4-pyrdpm)Ir(η5-C5Me5)Cl2], [(η4-C8H12)Rh(μ-4-pyrdpm)Ru(η6-C10H14)Cl2] and [(η4-C8H12)Rh(μ-4-pyrdpm)Ru(η6-C6H6)Cl2]. Resulting complexes have been characterized by elemental analyses and spectral studies. Molecular structures of the representative mononuclear complexes [(η4-C8H12)Rh(ndpm)] and [(η4-C8H12)Rh(4-pyrdpm)] have been authenticated crystallographically. 相似文献
15.
《Journal of organometallic chemistry》1988,350(2):C20-C24
Thermolysis of [Cp′Ni(μ-CO)]2 (1), Cp′ = η5C5H4R, R = CH3 (1a), t-Bu (1b); [Cp*Ni(μ-CO)]2 (1c), Cp* = η5-C5Me5 and [Cp″Ni(μ-CO)]2 (1d), Cp″ = η5-C5H3R2-1,3, R = t-Bu, with white phosphorus (P4) gives the nickelaphosphacubanes [Cp′Ni(μ3-P)]4 (2a,2b), [(Cp*Ni)3P5] (3) and the cyclo-P3 sandwich [(η3-P3)Ni″η5-C5H3(t-Bu)2] (4), the structure of which has been determined by X-ray crystallography. 相似文献
16.
The mononuclear cationic complexes [(η6-C6H6)RuCl(L)]+ (1), [(η6-p-iPrC6H4Me)RuCl(L)]+ (2), [(η5-C5H5)Ru(PPh3)(L)]+ (3), [(η5-C5Me5)Ru(PPh3)(L)]+ (4), [(η5-C5Me5)RhCl(L)]+ (5), [(η5-C5Me5)IrCl(L)]+ (6) as well as the dinuclear dicationic complexes [{(η6-C6H6)RuCl}2(L)]2+ (7), [{(η6-p-iPrC6H4Me)RuCl}2(L)]2+ (8), [{(η5-C5H5)Ru(PPh3)}2(L)]2+ (9), [{(η5-C5Me5)Ru(PPh3)}2(L)]2+ (10), [{(η5-C5Me5)RhCl}2(L)]2+ (11) and [{(η5-C5Me5)IrCl}2(L)]2+ (12) have been synthesized from 4,4′-bis(2-pyridyl-4-thiazole) (L) and the corresponding complexes [(η6-C6H6)Ru(μ-Cl)Cl]2, [(η6-p-iPrC6H4Me)Ru(μ-Cl)Cl]2, [(η5-C5H5)Ru(PPh3)2Cl)], [(η5-C5Me5)Ru(PPh3)2Cl], [(η5-C5Me5)Rh(μ-Cl)Cl]2 and [(η5-C5Me5)Ir(μ-Cl)Cl]2, respectively. All complexes were isolated as hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV-vis spectroscopy. The X-ray crystal structure analyses of [3]PF6, [5]PF6, [8](PF6)2 and [12](PF6)2 reveal a typical piano-stool geometry around the metal centers with a five-membered metallo-cycle in which 4,4′-bis(2-pyridyl-4-thiazole) acts as a N,N′-chelating ligand. 相似文献
17.
David L. Davies Judith A.K. Howard Selby A.R. Knox Karen Marsden Kevin A. Mead Michael J. Morris Melvyn C. Rendle 《Journal of organometallic chemistry》1985,279(3):c38-c41
The complexes [Ru2(CO)2(μ-CO)(μ-CMe)(η-C5H5)2]? and [Ru2CO2(μ-CO)(μ-CCH2)(η-C5H5)2] react together to give [{Ru2CO)3(η-C5H5)2}2(μ-CMeCHCH)]+ and [{Ru3(CO)3(η-C5H5)3}(μ-CCH2CHC){Ru2(CO)3(η-C5H5)2}], each characterised by X-ray diffraction. The former results from ethylidyne-vinylidene linking followed by an alkylidyne to vinyl rearrangement. 相似文献
18.
《Journal of organometallic chemistry》1986,299(3):C51-C55
The coupling of [Ru(CO)2L(η4-cot)] (L = CO or PPh3, cot = cyclooctatetraene) with [Fe(CO)3(η5-cyclohexadienyl)]+ or [Fe{P(OMe)3}(NO)2(η3-allyl)]+ yields respectively the dimetallic species [Ru(CO)2L(η2,η3-C8H8{Fe(CO)3(η4-C6H7)}] (3) and the allyl-substituted derivative [Ru(CO)2L(η5-C8H8CH2C(Me)CH2)][PF6] (5) whose X-ray structure is reported; paramagnetic [Co(η-C5H5)2] and [Ru(CO)3(η5-cyclohexadienyl)]+ give diamagnetic [Ru(CO)3(η4-C6H7C5H6(o-C5H5)] (8) via CC bond formation and one-electron reduction. 相似文献
19.
Mahendra Yadav 《Journal of organometallic chemistry》2010,695(6):841-763
The meso-pyridyl substituted dipyrromethane ligands 5-(4-pyridyl)dipyrromethane (4-dpmane) and 5-(3-pyridyl)dipyrromethane (3-dpmane) have been employed in the synthesis of a series of complexes with the general formulations [(η6-arene)RuCl2(L)] (η6-arene = C6H6, C10H14) and [(η5-C5Me5)MCl2(L)] (M = Rh, Ir). The reaction products have been characterized by microanalyses and spectral studies and molecular structures of the complexes [(η6-C10H14)RuCl2(4-dpmane)] and [(η5-C5Me5)IrCl2(3-dpmane)] have been determined crystallographically. For comparative studies, geometrical optimization have been performed on the complex [(η5-C5Me5)IrCl2(4-dpmane)] using exchange correlation functional B3LYP. Optimized bond length and angles are in good agreement with the structural data of the complex [(η5-C5Me5)IrCl2(3-dpmane)]. The complexes [(η6-C10H14)RuCl2(3-dpmane)], [(η5-C5Me5)RhCl2(3-dpmane)] and [(η5-C5Me5)IrCl2(3-dpmane)] have been employed as a transfer hydrogenation catalyst in the reduction of aldehydes. It was observed that the rhodium and iridium complexes mentioned above are more effective in this regard in comparison to the ruthenium complex. 相似文献
20.
The neutral complexes (η5-C5H5NiXL (X = Cl, L = PPh3 (I); L = PCy3 (II); X = Br, L = PPh3 (III); L = PCy3 (IV); X = I, L = PPh3 (V); L = PCy3 (VI)) have been obtained by treating NiX2L2 with thallium cyclopentadienide. The same reaction in the presence of TlBF4 gives cationic derivatives [(η5-C5H5)NiL2]BF4 (L = 2PPh2Me (VII); L = dppe (VIII)), whereas mononuclear complexes containing two different ligands (L2 = PPh3 + PCy3 (IX)) or dinuclear [(η5-C5H5)Ni(PPh3)]2dppe(BF4)2 (X) are obtained from the reaction of III with TlBF4 in the presence of a different ligand. Reduction of cationic complexes with Na/Hg gives very unstable nickel(I) derivatives (η5-C5H5)NiL2, which could not be isolated purely. Similar reduction of neutral complexes under CO gives a mixture of decomposition products containing [(η5-C5H5)Ni(CO)]2 and nickel(o) carbonyls, whereas in the presence of acetylenes, dinuclear [(η5-C5H5)Ni]2(RCCR′) (R = R′ = Ph; R = Ph, R′ = H) are obtained. 相似文献