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1.
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   

2.
13C T1 and η(CH) have been measured for the methyl carbon in cis-Os(CO)4(CH3)2, (π-C5H5)Fe(CO)2CH3, (π-C5H5)Mo(CO)3CH3 and (π-C5H5)2Zr(CH3)2. From this data, barriers to methyl rotation are estimated to be 4.4 ± 0.7, 5.4 ± 2, > 6, and > 6 kcal/mol, respectively. It appears that such barriers can be substantial even in uncrowded molecules.  相似文献   

3.
The mass spectra of the following acetylenic derivatives of iron, ruthenium and osmium carbonyls are reported: the iron compounds Fe2(CO)6[C2(C6H5)s2]2, Fe2(CO)6[C2(CH3)2]2 and Fe2(CO)6[C2(C2H5)2]2, the ruthenium compounds Ru2(CO)6[C2(C6H5)2]2, and Ru2(CO)6[C2(CH3)2]2 and the osmium compounds Os2(CO)6[C2(C6H5)2]2, Os2(CO)6[C2HC6H5]2 and Os2(CO)6[C2(CH3)2]2. Iron compounds exhibit breakdown schemes where binuclear, mononuclear and hydrocarbon ions are present. On the other hand, ruthenium and osmium compounds fragment in a similar way and give rise to singly and doubly charged binuclear ions. Phenylic derivatives of ruthenium and osmium also give weak triply charged ions. The results are discussed in terms of relative strengths of the metal-metal and metal-carbon bonds.  相似文献   

4.
The reactions of Fe(CO)5 or Fe3(CO)12 with NaBEt3H or KB[CH(CH3)C2H5]3H, respectively and treatment of the resulting carbonylates M2Fe(CO)4, M = Na, K with elemental selenium in appropriate ratios lead to the formation of M2[Fe2(CO)6(μ‐Se)2]. Subsequent reactions with organo halides or the complex fragment cpFe(CO)2+, cp = η5‐C5H5 afforded the selenolato complexes [Fe2(CO)6(μ‐SeR)2], R = CH2SiMe3 ( 1 ), CH2Ph ( 2 ), p‐CH2C6H4NO2 ( 3 ), o‐CH2C6H4CH2 ( 4 ) and cpFe(CO)2+ ( 5 ) in moderate to good yields. A similar reaction employing Ru3(CO)12, Se and p‐O2NC6H4CH2Br leads to the formation of the corresponding organic diselenide. The X‐ray structures of 1 , 3 , 4 and 5 were determined and revealed butterfly structures of the Fe2Se2 cores. The substituents in 1 , 3  and 5 adopt different conformations depending on their steric demand. In 4 , the conformation is fixed because of the chelate effect of the ligand. The Fe–Se bond lengths lie in the range 235 to 240 pm, with corresponding Fe–Fe bond lengths of 254 to 256 pm. The 77Se NMR data of the new complexes are discussed and compared with the corresponding data of related complexes.  相似文献   

5.
Bis(cyclopentadienyl)methane-bridged Dinuclear Complexes. VIII. Dinuclear Cobalt Complexes with the Dianion of Bis(cyclopentadienyl)methane and Bis(tetramethylcyclopentadienyl)dimethylsilane as Bridging Ligands The dinuclear cobalt complex [CH2(C5H4)2][Co(CO)2]2 ( 4 ) which is obtained from [Co(CO)4I] ( 2 ) and Li2[CH2(C5H4)2] ( 3 ) in 75% yield reacts with PMe3, PiPr3, P2Me4, Me2PCH2CH2PMe2 and (EtO)2POP(OEt)2, to the compounds 5–9 substituting one CO ligand per cobalt atom. Oxidative addition of CH3I to [CH2(C5H4)2][Co(CO)(PMe3)]2 ( 5 ) leads to the formation of the dinuclear cobalt(III) complex [CH2(C5H4)2][Co(COCH3)(PMe3)I]2 ( 11 ). The reaction of 4 with iodide generates [CH2(C5H4)2][Co(CO)I2]2 ( 12 ) which with PMe3, P(OMe)3, P(OiPr)3, and CNMe reacts under CO substitution to [CH2(C5H4)2][Co(L)I2]2 ( 13–16 ) and with PMe2H to {[CH2(C5H4)2][Co(PMe2H)3]2}I4 ( 17 ). The electrophilic addition reactions of NH4PF6 and CH3I to [CH2(C5H4)2][Co(PMe3)2]2 ( 20 ) produce the complex salts {[CH2(C5H4)2][CoR(PMe3)2]2}X2 ( 21 : R = H; 22 : R = CH3). From 22a (X = I) and LiCH3 the dinuclear tetramethyldicobalt compound [CH2(C5H4)2] · [Co(CH3)2(PMe3)]2 ( 23 ) is obtained which further reacts, via the intermediate 24 , to the chiral complex {[CH2(C5H4)2] · [CoCH3(PMe3)P(OMe)3]2}(PF6)2 ( 25 ). The reaction of 20 with C2(CN)4 and E- or Z-C2H2(CO2Me)2 gives the olefin(trimethylphosphine) cobalt(I) derivatives 26 und 27 . The synthesis of the dinuclear compounds 31–38 with [Me2Si(C5Me4)2]2? as the bridging unit is also described.  相似文献   

6.
Bis(cyclopentadienyl)methane-bridged Dinuclear Complexes, V[1]. – Heteronuclear Co/Rh-, Co/Ir-, Rh/Ir-, and Ti/Ir Complexes with the Bis(cyclopentadienyl)methane Dianion as Bridging Ligand* The lithium and sodium salts of the [C5H5CH2C5H4]- anion, 1 and 2 , react with [Co(CO)4I], [Rh(CO)2Cl]2, and [Ir(CO)3Cl]n to give predominantly the mononuclear complexes [(C5H5-CH2C5H4)M(CO)2] ( 3, 5, 7 ) together with small amounts of the dinuclear compounds [CH2(C5H4)2][M(CO)2]2 ( 4, 6, 8 ). The 1H- and 13C-NMR spectra of 3, 5 , and 7 prove that the CH2C5H5 substituent is linked to the π-bonded ring in two isomeric forms. Metalation of 5 and 7 with nBuLi affords the lithiated derivatives 9 and 10 from which on reaction with [Co(CO)4I], [Rh(CO)2Cl]2, and [C5H5TiCl3] the heteronuclear complexes [CH2(C5H4)2][M(CO)2][M′(CO)2] ( 11–13 ) and [CH2(C5H4)2]-[Ir(CO)2][C5H5TiCl2] ( 17 ) are obtained. Photolysis of 11 and 12 leads almost quantitatively to the formation of the CO-bridged compounds [CH2(C5H4)2][M(CO)(μ-CO)M′(CO)] ( 14, 15 ). According to an X-ray crystal structure analysis the Co/Rh complex 14 is isostructural to [CH2(C5H4)2][Rh2(CO)2(μ-CO)] ( 16 ).  相似文献   

7.
The preparation, characterisation and single‐crystal XRD molecular structure determinations of four complexes containing –CC–MLn end‐groups, namely Ru{C≡CFc′(I)}(dppe)Cp ( 1 ), the vinylidene [Os(=C=CH2)(PPh3)2Cp]PF6 ( 2 ), trans‐Pt(C≡CC6H4‐4‐C≡CPh){C≡CC6H4‐4‐C2Ph[Co2(μ‐dppm)(CO)4]}(PPh3)2 ( 3 ), and C6H4{μ3‐C2[AuRu3(CO)9(PPh3)]}2‐1,4 ( 4 ) are reported. In these compounds a range of –CC– environments is found, extending from the σ‐bonded alkynyl group in 1 to examples where the C2 unit interacts with either a proton (in vinylidene 2 ), by bridging a dicobalt carbonyl moiety (in 3 ) or the AuRu3 cluster in 4 . Changes in geometry are rationalised by considering the various bonding modes.  相似文献   

8.
13C 2D-PASS spectra of two new cis-dioxo catecholatomolybdenum complexes (NH2CH2NH2CHCH2)2(H+)3[MovO 2(C6H4O2)2] and (NH2CH2CH2CH2NH2)2(H+)3[Mo(v)O2 (C2H2O2)2] have been obtained by solid-state nuclear magnetic resonance (NMR), in which the spinning sidebands were well-separated. The principal components of the 13C shielding tensors were extracted by theoretically fitting the intensities of 13C spinning sidebands. The effects of counter cations on 13C chemical shift isotropy and shielding tensor of cis-dioxo catecholatomolybdenum complex anion [Mo (v)O2(C6H4O2)2]3− were studied, comparing the 13C CSA of those carbon sites in complex anions with that of the counter cations. Based on the known structure of the molybdenum complex crystal, theoretical values of 13C shielding tensors were calculated by the ainitio GIAO method, in comparison with the experimental results.  相似文献   

9.
Monocationic bis‐allyl complexes [Ln(η3‐C3H5)2(thf)3]+[B(C6X5)4]? (Ln=Y, La, Nd; X=H, F) and dicationic mono‐allyl complexes of yttrium and the early lanthanides [Ln(η3‐C3H5)(thf)6]2+[BPh4]2? (Ln=La, Nd) were prepared by protonolysis of the tris‐allyl complexes [Ln(η3‐C3H5)3(diox)] (Ln=Y, La, Ce, Pr, Nd, Sm; diox=1,4‐dioxane) isolated as a 1,4‐dioxane‐bridged dimer (Ln=Ce) or THF adducts [Ln(η3‐C3H5)3(thf)2] (Ln=Ce, Pr). Allyl abstraction from the neutral tris‐allyl complex by a Lewis acid, ER3 (Al(CH2SiMe3)3, BPh3) gave the ion pair [Ln(η3‐C3H5)2(thf)3]+[ER3(η1‐CH2CH?CH2)]? (Ln=Y, La; ER3=Al(CH2SiMe3)3, BPh3). Benzophenone inserts into the La? Callyl bond of [La(η3‐C3H5)2(thf)3]+[BPh4]? to form the alkoxy complex [La{OCPh2(CH2CH?CH2)}2(thf)3]+[BPh4]?. The monocationic half‐sandwich complexes [Ln(η5‐C5Me4SiMe3)(η3‐C3H5)(thf)2]+[B(C6X5)4]? (Ln=Y, La; X=H, F) were synthesized from the neutral precursors [Ln(η5‐C5Me4SiMe3)(η3‐C3H5)2(thf)] by protonolysis. For 1,3‐butadiene polymerization catalysis, the yttrium‐based systems were more active than the corresponding lanthanum or neodymium homologues, giving polybutadiene with approximately 90 % 1,4‐cis stereoselectivity.  相似文献   

10.
A series of ruthenium hydride compounds containing substituted bidentate pyrrole‐imine ligands were synthesized and characterized. Reacting RuHCl(CO)(PPh3)3 with one equivalent of [C4H3NH(2‐CH=NR)] in ethanol in the presence of KOH gave compounds {RuH(CO)(PPh3)2[C4H3N(2‐CH=NR)]} where trans‐Py‐Ru‐H 1, R = CH2CH2C6H9; cis‐Py‐Ru‐H 2, R = Ph‐2‐Me; and cis‐Py‐Ru‐H 3, R = C6H11. Heating trans‐Py‐Ru‐H 1 in toluene at 70°C for 12 hr resulted a thermal conversion of the trans‐Py‐Ru‐H 1 into its cis form, {RuH(CO)(PPh3)2[C4H3N(2‐CH=NCH2CH2C6H9)]} (cis‐Py‐Ru‐H 1) in very high yield. The 1H NMR spectra of trans‐Py‐Ru‐H 1, cis‐Py‐Ru‐H 2, cis‐Py‐Ru‐H 3, and cis‐Py‐Ru‐H 1 all show a typical triplet at ca. δ–11 for the hydride. The trans and cis form indicate the relative positions of pyrrole ring and hydride. The geometries of trans‐Py‐Ru‐H 1, cis‐Py‐Ru‐H 1, and cis‐Py‐Ru‐H 3 are relatively similar showing typical octahedral geometries with two PPh3 fragments arranged in trans positions.  相似文献   

11.
Four diiron dithiolate complexes with monophosphine ligands have been prepared and structurally characterized. Reactions of (μ-SCH2CH2S-μ)Fe2(CO)6 or [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)6 with tris(4-chlorophenyl)phosphine or diphenyl-2-pyridylphosphine in the presence of Me3NO·2H2O afforded diiron pentacarbonyl complexes with monophosphine ligands (μ-SCH2CH2S-μ)Fe2(CO)5[P(4-C6H4Cl)3] (1), (μ-SCH2CH2S-μ)Fe2(CO)5[Ph2P(2-C5H4N)] (2), [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)5[P(4-C6H4Cl)3] (3), and [μ-SCH(CH3)CH(CH3)S-μ]Fe2(CO)5[Ph2P(2-C5H4N)] (4) in good yields. Complexes 1–4 were characterized by elemental analysis, 1H NMR, 31P{1H} NMR and 13C{1H} NMR spectroscopy. Furthermore, the molecular structures of 1–4 were confirmed by X-ray crystallography.  相似文献   

12.
Chlorodiphenylphosphine and 2,2′-biphenylylenephosphorochloridite react with 2-hydroxy-2′-(1,4-bisoxo-6-hexanol)-1,1′-biphenyl to yield the new α,ω-bis(phosphorus-donor)-polyether ligands, 2-Ph2PO(CH2CH2O)2–C12H8-2′-OPPh2 (1) and 2-(2,2′-O2C12H8)P(CH2CH2O)2–C12H8-2′-P(2,2′-O2C12H8) (2). These ligands react with Mo(CO)4(nbd) to form the monomeric metallacrown ethers, cis-Mo(CO)4{2-Ph2PO(CH2CH2O)2–C12H8-2′-OPPh2} (cis-3) and cis-Mo(CO)4{2-(2,2′-O2C12H8)P(CH2CH2O)2–C12H8-2′-P(2,2′-O2C12H8)} (cis-4), in good yields. The X-ray crystal structures of cis-3 and cis-4 are significantly different, especially in the conformation of the metal center and the adjacent ethylene group. The very different 13C-NMR coordination chemical shifts of this ethylene group in cis-3 and cis-4 suggest that the solution conformations of these metallacrown ethers are also quite different. Both metallacrown ethers undergo cis–trans isomerization in the presence of HgCl2. Although the cis–trans equilibrium constants for the isomerization reactions are nearly identical, the isomerization of cis-3 is more rapid. Phenyl lithium reacts with cis-3 to form the corresponding benzoyl complexes but does not react with either trans-3 or cis-4. Both the slower rate of cis–trans isomerization of cis-4 and its lack of reaction with PhLi are consistent with weaker interactions between the hard metal cations and the carbonyl oxygens in both trans-3 and cis-4.  相似文献   

13.
The electrochemical properties of eight acyclic cluster polyethers [5-C5H4CH2(CH2OCH2) n CH2C5H4-5][MFeCoE(CO)8]2[(1a–f): E = S, M = Mo, n = 2, 3, 4; E = S, M = W, n = 2, 3; E = Se, M = Mo, n = 2], (5-MeCOC5H4)[(5-C5H4CH2CH2)2O] [Mo2FeS(CO)7][MoFeCoS(CO)8] (2) and (5-MeCOC5H4)2[(5-C5H4CH2- CH2)2O] [Mo2FeS(CO)7]2 (3) have been investigated in CH2Cl2 using cyclic voltammetry with n-Bu4NPF6 as the supporting electrolyte. The transport of alkali metal cations through a liquid membrane with the double cluster (3) as carrier has been examined.  相似文献   

14.
Hexamethylborazolechromium tricarbonyl B3N3(CH3)6 Cr(CO)3 reacts with tertiary phosphines and phosphites under surprisingly mild conditions by cleavage of the ring-to-metal bond. For L = trialkylphosphines and trialkyl- or triaryl-phosphites, compounds of the general composition cis-Cr(CO)3L3 are formed, whereas for L = triphenyl- and tricyclohexyl-phosphine the complexes trans-Cr(CO)4L2 are obtained. The kinetics of the reaction of B3N3(CH3)6 Cr(CO)3 with phosphites P(OR)3 (R = CH3, C2H5, C6H5) have been studied by means of spectrophotometric methods. The second-order rate law indicates a primary, rate-determining attack of the phosphite to either the metal atom or the ring ligand of the borazole complex. This attack is favoured by an extremely low activation energy. The mechanism of the substitution process is discussed in detail, and the reactivity of the hexamethylborazole compound is compared with that of other half-sandwich type complexes.  相似文献   

15.
The condensation reaction of CH3COC5H4M(CO)3SnCl3 (M = Mo or W) with PyCONHNH2 (Py = 2,3,4-pyridyl or 2-pyridylmethyl) in mild conditions yields cyclodiazastannoxides fused cyclopentadienyl M-Sn bonded organometallic heterocycle {μ-[C5H4(CH3)CN-NC(O)PyH]M(CO)3SnCl3}. The similar reaction of CH3COC5H4M(CO)3SnCl3 with ArCONHNH2 (Ar = 2-furanyl) gives complexes μ-[C5H4(CH3)CN-NC(O)Ar]M(CO)3SnCl2(H2O), in which the water molecule can be replaced by other N-donor ligands, such as pyridine or 4,4-bipyridine. Arene-bridged organometallic heterocyclic complexes μ-{[C5H4(CH3)CN-NC(O)]2C6H4}{M(CO)3SnCl2(Solvent)}2 have also been prepared by the reaction of CH3COC5H4M(CO)3SnCl3 with terephthaloyl hydrazine. In these new organometallic heterocyclic complexes, it seems that the tin atom prefers to be six-coordinate through absorbing the chloridion or solvent molecules.  相似文献   

16.
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   

17.
The positive-ion mass spectra of the following organonitrogen derivatives of metal carbonyls are discussed: (i) The compounds NC5H4CH2Fe(CO)2C5H5, NC5H4CH2COMo(CO)2C5H5, NC5H4CH2W(CO)3C5H5, NC5H4CH2COMn(CO)4, C5H10NCH2CH2Fe(CO)2C5H5, (CH3)2NCH2CH2COFeCOC5H5 and (CH3)2NCH2CH2COMn(CO)4 obtained from metal carbonyl anions and haloalkylamines, (ii) The isocyanate derivative C5H5Mo(CO)3CH2NCO; (iii) The arylazomolybdenum derivatives RN2Mo(CO)2C5H5 (R ? phenyl, p-tolyl, or p-anisyl); (iv) The compound (C6H5N)2COFe2(CO)6 obtained from Fe3(CO)12 and phenyl isocyanate; (v) The N,N,N′,N′-tetramethylethylenediamine complex (CH3)2NCH2CH2N(CH3)2W(CO)4. Further examples of eliminations of hydrogen, CO, and C2H2 fragments were noted. In addition evidence for the following more unusual processes was obtained: (i) Elimination of HCN fragments from the ions [NC5H4CH2MC5H5]+ to give the ions [(C5H5)2M]+ (M ? Fe, Mo and W); (ii) Conversion of C5H5Mo(CO)3CH2NCO to C5H5Mo(CO)2CH2NCO within the mass spectrometer; (iii) Elimination of N2 from [RN2MoC5H5]+ to give [RMoC5H5]+; (iv) Novel eliminations of HNCO, FeNCO, and C6H5NC fragments in the mass spectrum of (C6H5N)2COFe2(CO)6; (v) Facile dehydrogenation of the N,N,N′,-N′-tetramethylethylenediamine ligand in the complex (CH3)2NCH2CH2N(CH3)2W(CO)4.  相似文献   

18.
Treatment of a N-arylanilido-imine ligand [ortho-C6H4(NHAr)CHN]2CH2CH2 (Ar = 2,6-Me2C6H3) (LH2) with one equiv. of AlMe3 affords a monometallic complex [C6H4(NHAr)–CHN)]CH2CH2(C6H4(NAr)CHNAlMe2) (1). The monometallic complex 1 reacts with one equiv. of ZnEt2 to give a heterobimetallic complex [C6H4(NAr)–CHNZnEt]CH2CH2[C6H4(NAr)–CHNAlMe2] (2). Both complexes were characterized by 1H and 13C NMR spectroscopy and elemental analyses, and the molecular structures of 1 and 2 were determined by X-ray diffraction analysis. The complexes 1 and 2 both are efficient catalysts for ring-opening polymerization of ε-caprolactone in the presence of benzyl alcohol yielding polymers with narrow polydispersity values and complex 2 initiates the polymerization in a controllable manner.  相似文献   

19.
Six new complexes, Mn(CO)( 5-C5H5){Ph2P(S)(CH2) n P(S)Ph2}] (1a–3a) [(1a), n=1; (2a), n=2; (3a), n=3] and [Mn2(CO)4( 5-C5H5)2(cis--Ph2P(S)(CH2) n P(S)Ph2)] (1b–3b) [(1b), n=1; (2b), n=2; (3b), n=3] have been synthesized by the photochemical reaction of [( 5-C5H5)Mn(CO)3] with Ph2P(S)(CH2) n P(S)Ph2 [n=1, dppm(S)2; 2, dppe(S)2; 3, dppp(S)2]. The complexes have been characterized by elemental analysis, mass spectroscopy, f.t.-i.r. and 31P–[1H]-n.m.r. spectroscopy. The spectroscopic studies reveal that coordination of the ligand iscis-chelate bidentate in [Mn(CO)( 5-C5H5){Ph2P(S)(CH2) n P(S)Ph2}] (1a–3a) and cis-bridging bidentate between two metals in [Mn2(CO)4( 5-C5H5)2(cis--Ph2P(S)(CH2) n P(S)Ph2)] (1b–3b).  相似文献   

20.
Reaction of [μ-SC6H3(CH3)S-μ]Fe2(CO)6 (1) with 2 equivalents of PPh3 gave the monosubstituted complex [μ-SC6H3(CH3)S-μ]Fe2(CO)5(PPh3) (2) plus the disubstituted [μ-SC6H3(CH3)S-μ]Fe2(CO)4(PPh3)2 (3), while the complexes [μ-SC6H3(CH3)S-μ]Fe2(CO)5[P(3-C6H4CH3)3] (4) and [μ-SC6H3(CH3)S-μ]Fe2(CO)5[P(4-C6H4F)3] (5) were prepared by the reactions of 1 with P(3-C6H4CH3)3 or P(4-C6H4F)3 in the presence of Me3NO. Complexes 3–5 were characterized by IR, NMR spectroscopy and single-crystal X-ray diffraction analysis. The molecular structures of 3–5 reveal that in each case, the phosphine ligand occupies the apical position in an overall distorted square pyramidal iron(I) complex geometry.  相似文献   

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