共查询到20条相似文献,搜索用时 31 毫秒
1.
A. A. Pasynskii Yu. V. Torubaev F. S. Denisov A. N. Grechkin K. A. Lyssenko S. E. Nefedov V. M. Novotortsev Zh. V. Dobrokhotova 《Russian Chemical Bulletin》1999,48(9):1744-1750
Complexes [RC5H4Fe(CO)2]2Sn(TePh)2 (R=H, Me) containing stable heterometallic Fe−Sn−Fe fragments with two phenyltellurium groups at the tin atom were synthesized
from [RC5H4Fe(CO)2]2SnCl2 (R=H, Me) and sodium phenyltelluride and their structures were established by X-ray analysis. Their chelates with tungsten
tetracarbonyl, [RC5H4Fe(CO)2]2Sn(TePh)2[W(CO)4] (R=Me, H), and complexes with two Cr(CO)5 fragments or dimeric trimethylplatinum iodide were synthesized and studied by X-ray analysis. Thermal decomposition of [RC5H4Fe(CO)2]2Sn(TePh)2 complexes and their adducts with ML fragments (ML=W(CO)4, 2 Cr(CO)5, (Me3PtI)2) into inorganic tellurides of a preset mixed-metal—chalcogenide composition was studied by differential scanning calorimetry.
The temperature of complete elimination of organic fragments from methylcyclopentadienyl complexes is about 100°C lower than
in the case of cyclopentadienyl analogs.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1766–1772, September, 1999. 相似文献
2.
Michael Knorr Pierre Braunstein Abdelatif Messaoudi Antonio Tiripicchio Franco Ugozzoli 《Journal of Cluster Science》2007,18(1):289-301
The reaction of the iron metalate [Fe{Si(OMe)3}(CO)3(dppm-P)]− (1b) with [Ru(CO)3Cl(μ-Cl)]2 afforded the heterodinuclear complex [(OC)3{(MeO)3Si}Fe(μ-dppm)Ru(CO)3Cl)] (Fe–Ru) (3) in which a long Fe–Ru separation of 2.956(1) ? has been crystallographically evidenced. It was shown by density functional
theory (DFT) calculations to correspond to the minimum-energy structure. Upon treatment of the corresponding hydrido complex
[HFe{Si(OMe)3}(CO)3(dppm-P)] (1a) with [Ru(CO)3Cl(μ-Cl)]2, the chloride-bridged tetranuclear hydrido complex [(OC)3{(MeO)3Si}Fe(H)(μ-dppm)Ru(CO)2Cl(μ-Cl)]2 (4) was formed in which the Fe and Ru centers are only linked via bridging dppm ligands.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users.
相似文献
Pierre Braunstein (Corresponding author)Email: |
3.
Dr. Sudip Pan Sai Manoj N. V. T. Gorantla Dr. Devaborniny Parasar Prof. Dr. H. V. Rasika Dias Prof. Dr. Gernot Frenking 《Chemistry (Weinheim an der Bergstrasse, Germany)》2021,27(23):6936-6944
Syntheses of the copper and gold complexes [Cu{Fe(CO)5}2][SbF6] and [Au{Fe(CO)5}2][HOB{3,5-(CF3)2C6H3}3] containing the homoleptic carbonyl cations [M{Fe(CO)5}2]+ (M=Cu, Au) are reported. Structural data of the rare, trimetallic Cu2Fe, Ag2Fe and Au2Fe complexes [Cu{Fe(CO)5}2][SbF6], [Ag{Fe(CO)5}2][SbF6] and [Au{Fe(CO)5}2][HOB{3,5-(CF3)2C6H3}3] are also given. The silver and gold cations [M{Fe(CO)5}2]+ (M=Ag, Au) possess a nearly linear Fe-M-Fe’ moiety but the Fe-Cu-Fe’ in [Cu{Fe(CO)5}2][SbF6] exhibits a significant bending angle of 147° due to the strong interaction with the [SbF6]− anion. The Fe(CO)5 ligands adopt a distorted square-pyramidal geometry in the cations [M{Fe(CO)5}2]+, with the basal CO groups inclined towards M. The geometry optimization with DFT methods of the cations [M{Fe(CO)5}2]+ (M=Cu, Ag, Au) gives equilibrium structures with linear Fe-M-Fe’ fragments and D2 symmetry for the copper and silver cations and D4d symmetry for the gold cation. There is nearly free rotation of the Fe(CO)5 ligands around the Fe-M-Fe’ axis. The calculated bond dissociation energies for the loss of both Fe(CO)5 ligands from the cations [M{Fe(CO)5}2]+ show the order M=Au (De=137.2 kcal mol−1)>Cu (De=109.0 kcal mol−1)>Ag (De=92.4 kcal mol−1). The QTAIM analysis shows bond paths and bond critical points for the M−Fe linkage but not between M and the CO ligands. The EDA-NOCV calculations suggest that the [Fe(CO)5]→M+←[Fe(CO)5] donation is significantly stronger than the [Fe(CO)5]←M+→[Fe(CO)5] backdonation. Inspection of the pairwise orbital interactions identifies four contributions for the charge donation of the Fe(CO)5 ligands into the vacant (n)s and (n)p AOs of M+ and five components for the backdonation from the occupied (n-1)d AOs of M+ into vacant ligand orbitals. 相似文献
4.
Alexander A. Pasynskii Yuri V. Torubaev Vladimir N. Grigor’ev Anton I. Blokhin Max Herberhold Pradeep Mathur 《Journal of Cluster Science》2009,20(1):193-204
The shortening of partly multiple M–Te (M = Mn, Fe, Co, Cr or W) bonds is observed for two classes of organometallic compounds:
(1) formally electron-deficient species with additional donor–acceptor interaction between Te lone pairs and half-occupied
d-orbitals of M; (2) formally electron-saturated species having additional dative interaction between M lone pairs and LUMO
of Te. These compounds could be prepared by two main methods: (a) interaction of [CpMn(CO)2PhC(O)−]Li+ with Te proceeds via formation of intermediate {[CpMn(CO)2]2Te}2− which is further transformed into binuclear complex [CpMn(CO)2]2Te(CH2Ph)2 or into trinuclear ditelluride cluster [CpMn(CO)2]3Te2 on one hand or to mixed-metal monotelluride clusters [CpMn(CO)2]2TeM(CO)5 on another hand. (b) treatment of Fe(CO)5, CpMn(CO)2(THF) or Me4C4Co(CO)2I with [PhTeI]4, PhTeI3 or PhTeI2HC = CPhI results in different PhTeI-containing complexes of Fe, Mn or Co. The molecular structures of all new compounds were
studied by means of X-ray diffraction analyses and the mechanism of M–Te bond shortening is discussed.
Proceeding of the international workshop on transition metal clusters, 3–5 July 2008, Université de Rennes 1, Campus de Beaulieu,
Rennes, France. 相似文献
5.
Dr. Silke Wolf Dr. Alexander Egeberg Jens Treptow Prof. Dr. Claus Feldmann 《ChemistryOpen》2021,10(2):171-180
Nine Ge−Fe carbonyl cluster compounds are prepared via ionic liquids-based synthesis. This includes the novel compounds [EMIm][Fe(CO)3I(GeI3)], [EHIm][Fe(CO)3I(GeI3)], [BMIm][GeI2{Fe(CO)4}2(μ-I)][AlCl4]2, [GeI2{Fe(CO)4}2(μ-I)][Fe(AlBr4)3], [BMIm]2[(FeI2)0.75{Fe(CO)2I(GeI3)2}2], and [EHIm][Fe(CO)4(GeI2)2Fe(CO)3GeI3] as well as the previously reported compounds (Fe(CO)4(GeI3)2, FeI4{GeI3Fe(CO)3}2, and Ge12{Fe(CO)3}8(μ-I)4 (EMIm: 1-ethyl-3-methylimidazolium, EHIm: 1-ethylimidazolium, BMIm: 1-butyl-3-methylimidazolium). With this series of compounds, a comparison of synthesis conditions and structural features is possible and, for instance, allows correlating the composition and structure of the respective Ge−Fe carbonyl cluster compounds with the type and acidity of the ionic liquid. With [EMIm][{GeI3}2Fe(CO)3I], moreover, we can exemplarily show the thermal decomposition as a single-source precursor in the ionic liquid, resulting in bimetallic Ge−Fe nanoparticles with small size and narrow size distribution (7.0±1.4 nm). 相似文献
6.
7.
Wen-Feng Liaw Chia-Huei Lai Ming-Hsi Chiang Cheng-Kang Hsieh Gcne-Hsiang Lee Shie-Ming Peng 《中国化学会会志》1993,40(5):437-444
Diphenyldichalcogenides (PhE)2 (E = Te, Se) react with Fe(0)-phenylchalcogenolate [PPN] [PhEFe(CO)4] to yield the products of oxidative addition, Fe(II)-mixed-phenylchalcogenolate fac- [PPN][Fe(CO)3(TePh)n(ScPh)3-n] (n = 1, 2). Reactions of [PPN][REFe(CO)4] (E=Se, R=Me; E=S, R=Et) and diphenyldichalcogenides yielded ligand-exchange products [PPN][PhEFe(CO)4] (E=Te, Se, S). The compounds [Fe(CO)3(TePh)(ScPh)2]? (l) and [Fe(CO)3(TePh)2 (2) crystallize in the isomorphous monoclinic space group C2/e, with a = 32.035(8), b = 11.708(6), c = 28.909(6) Å, Z = 8, R = 0.048, and Rw = 0.044 (1); with a = 32.089(5), b= 11.745(2), c = 28.990(8) Å, Z = 8, R = 0.048, and Rw = 0.048 (2). The complexes 1 and 2 crystallize as discrete cations of PPN+ and anions of [Fe(CO)3(TcPh)u(ScPh)3-n] (n=1, 2), and one half solvent molecule THF. The geometry around Fe(II) is a distorted octahedron with three carbonyl groups and three phenylchalcogenolate ligands occupying facial positions. 相似文献
8.
Milton K. Morigaki Luiz C. Machado Carlos Larica Gilson H. M. Dias 《Transition Metal Chemistry》1994,19(6):599-602
Summary Complexes [Fe(t-BuNC)n(CO)5-n](n = 1 or 2) react with equimolar amounts of mercury(II) halides in acetone to form neutral iron-mercury adducts [Fe(t-BuNC) (CO)4–(HgX2)] and [Fe(t-BuNC)2(CO)3(HgX2)] (X = Cl or I), while [Fe(t-BuNC)5] reacts with solid mercury halides in petroleum ether to give the salts [Fe(t-BuNC)5(HgX)]-HgX3 (X = Br or I). Product assessment was based upon analytical and spectroscopic data, the Mössbauer effect and on molar conductivity studies. 相似文献
9.
Jing Wang Rgine Guidetti-Grept Reinhart Keese Helen Stoeckli-Evans 《Helvetica chimica acta》1997,80(4):1169-1175
N, N-Dimethylformamide dimethyl acetal transforms an allylic OH group, which is part of a tetracyclic hydrocarbon in a unique elimination reaction into a [5.5.5.5]fenestradiene ( 2b → 4 ). In topologically selective reactions of this diene 4 with [Fe2(CO)9,], the [Fe(CO)4(η2-diene)] and the [Fe(CO)3(η4-diene)] complexes 8 and 9 , respectively, are formed by complexation on one side of the diene moiety, whereas complexation on the other side leads to a [Fe(CO)2(Cp)] complex 10 . 相似文献
10.
The intramolecular dynamic behavior of the tetrahedrane-type cluster [Fe2(CO)6(μ-SNH)] 1 was studied by 13C NMR spectroscopy. The 57Fe chemical shift of 1 and the coupling constants 1
J(57Fe,13C) were measured. These NMR parameters, and also 1
J(57Fe,15N), were found to be in good agreement with data calculated by using density functional theory (DFT) methods (B3LYP), based on the geometry calculated at the 6-311+G(d,p) level of theory. The isolobal replacement of the Fe(CO)3 with BH fragments leads to the tetrahedranes [Fe(CO)3(BH)(μ-SNH)] 2 and [(HB)2(μ-SNH)] 3. Both were identified by calculations as minima on the respective potential energy surface (PES). However, the tetrahedrane-type structure of 3 is much higher in energy when compared with the planar cyclic isomers 3a and 3b. 相似文献
11.
Chien‐Kuo Hsieh Feng‐Chun Lo Gene‐Hsiang Lee Shie‐Ming Peng Wen‐Feng Liaw 《中国化学会会志》2000,47(1):103-107
Complex fac‐[Fe(CO)3(TePh)3]? was employed as a “metallo chelating” ligand to synthesize the neutral (CO)3Mn(μ‐TePh)3Fe(CO)3 obtained in a one‐step synthesis by treating fac‐[Fe(CO)3(TePh)3]? with fac‐[Mn‐(CO)3(CH3CN)3]+. It seems reasonable to conclude that the d6 Fe(II) [(CO)3Fe(TePh)3]? fragment is isolobal with the d6 Mn(I) [(CO)3Mn(TePh)3]2? fragment in complex (CO)3Mn(μ‐TePh)3Fe(CO)3. Addition of fac‐[Fe(CO)3(TePh)3]? to the CpNi(I)(PPh3) in THF resulted in formation of the neutral CpNi(TePh)(PPh3) also obtained from reaction of CpNi(I)(PPh3) and [Na][TePh] in MeOH. This investigation shows that fac‐[Fe(CO)3(TePh)3]? serves as a tridentate metallo ligand and tellurolate ligand‐transfer reagent. The study also indicated that the fac‐[Fe(CO)3(SePh)3]? may serve as a better tridentate metallo ligand and chalcogenolate ligand‐transfer reagent than fac‐[Fe(CO)3(TePh)3]? in the syntheses of heterometallic chalcogenolate complexes. 相似文献
12.
Katarzyna Wójcik Petra Ecorchard Dieter Schaarschmidt Tobias Rüffer Heinrich Lang Prof. Dr. Michael Mehring 《无机化学与普通化学杂志》2012,638(11):1723-1730
Abstract. The cyclopentadienyl‐substituted iron‐bismuth complexes [{Cp(CO)2Fe}BiCl2] ( 1 ), [{Cp(CO)2Fe}BiBr2] ( 2 ), [{Cp′′(CO)2Fe}BiBr2] ( 3 ) and [{Cp*(CO)2Fe}BiBr2] ( 4 ) were prepared with high yields starting from [Cpx(CO)2Fe]2 [Cpx = C5H5 (Cp), C5H3‐1, 3‐tBu2 (Cp′′), C5Me5 (Cp*)] and the corresponding bismuth halides. The single crystal X‐ray structure analyses of compounds 2 – 4 are reported. Comparison of their solubility demonstrates that the steric hindrance in this type of compounds is only slightly higher for compound 3 compared with compound 2 but significantly lower compared with the Cp* derivative 4 . Compounds 1 – 4 react with nucleophililic reagents such as KOtBu, NaOCH2CH2OCH3, and NaOSiMe3 as well as with water in the presence of an amine to give a mixture of [{Cpx(CO)2Fe}BiX] (X = Cl, Br) and [{Cpx(CO)2Fe}3Bi]. In case of a reaction with nBu4NCl and DMAP (dimethylaminopyridine) no such dismutation is observed. Instead the complexes [{Cp(CO)2Fe}BiBr2(DMAP)2] ( 5 ), [NnBu4]2[{{Cp(CO)2Fe}BiBr3}2] ( 6 ) and [NnBu4]2[{{Cp(CO)2Fe}BiCl3}2] ( 7 ) were isolated and characterized by single‐crystal X‐ray diffraction. 相似文献
13.
S. P. Gubin L. G. Kuz'mina A. V. Churakov J. A. K. Howard L. A. Polyakova N. A. Kataeva I. F. Golovaneva A. P. Klyagina 《Russian Chemical Bulletin》2005,54(8):1813-1818
The reaction of the carbidocarbonyl cluster [Fe6C(CO)16]2− with ruthenium(IV) hydroxochloride Ru(OH)Cl3 was studied. At 90–100 °C, the reaction gave products of replacement of Fe atoms by Ru in the [Fe6C(CO)16]2− cluster along with degradation products. Treatment of the replacement products with FeCl3 afforded the [Fe2.96Ru3.04C(CO)17] compound (1), which was characterized by X-ray diffraction analysis. The crystals of cluster 1 are composed of two types of octahedral molecules (1a and 1b) in a ratio of 2 : 1. Molecules 1a are in general positions, and molecules 1b are located on twofold axes. In both molecules, the Fe and Ru atoms are disordered over four of six positions.
__________
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1761–1766, August, 2005. 相似文献
14.
Jacques Ioset Lothar Helm Andr Merbach Raymond Roulet Fabrizia Grepioni Dario Braga 《Helvetica chimica acta》1988,71(6):1458-1466
Variable-pressure 1H-NMR Spectroscopy has been used to study the fluxionality of some five-coordinated Fe complexes in solution. For [Fe(CO)2 1,3-cyclooctadiene (PPh3)], the CO site exchange is known (by analogy with [Fe(CO)3(1,3-cyclooctadiene)]) to be a non-dissociative process, and an activation volume of ca. 0 cm3.mol?1 was indeed obtained. However, for [Fe(CO2){2,3-η:O-σ-(7,7-dimethoxybicyclo[2.2.1]hept-2-ene)}(PPh3)], the activation volume of +5 cm3 mol?1 suggests that an unprecedented dissociation process is responsible for the CO site exchange. The molecular structure of [Fe(CO)2(1,3-cyclooctadiene)(PPh3)] was ascertained by single-crystal X-ray diffractometry. The crystals are triclinic, space group P1 , a = 9.606(3), b = 16.795(2), c = 7.743(8) Å, α = 97.83(4), β = 109.63(4), γ = 83.37(2)°. The structure determination has shown that the complex possesses a tetragonal pyramidal coordination, with the endocyclic C?C bond and PPh3 occupying basal sites. 相似文献
15.
Jiaye Jin Sudip Pan Xiaoyang Jin Shujun Lei Lili Zhao Gernot Frenking Mingfei Zhou 《Chemistry (Weinheim an der Bergstrasse, Germany)》2019,25(13):3229-3234
The lanthanide octacarbonyl anion complexes Ln(CO)8− (Ln=Tm, Yb, Lu) were produced in the gas phase and detected by mass-selected infrared photodissociation spectroscopy in the carbonyl stretching-frequency region. By comparison of the experimental CO-stretching frequencies with calculated data, which are strongly red-shifted with respect to free CO, the Yb(CO)8− and Lu(CO)8− complexes were determined to possess octahedral (Oh) symmetry and a doublet X2A2u (Yb) and singlet X1A1g (Lu) electronic ground state, whereas Tm(CO)8− exhibits a D4h equilibrium geometry and a triplet X3B1g ground state. The analysis of the electronic structures revealed that the metal-CO attractive forces come mainly from covalent orbital interactions, which are dominated by [Ln(d)]→(CO)8 π backdonation and [Ln(d)]←(CO)8 σ donation (contributes ≈77 and 16 % to covalent bonding, respectively). The metal f orbitals play a very minor role in the bonding. The electronic structure of all three lanthanide complexes obeys the 32-electron rule if only those electrons that occupy the valence orbitals of the metal are considered. 相似文献
16.
A. M. Sheloumov F. M. Dolgushin M. V. Kondrashov P. V. Petrovskii Kh. A. Barbakadze O. I. Lekashvili A. A. Koridze 《Russian Chemical Bulletin》2007,56(9):1757-1764
First ruthenium complexes with a ferrocene-based pincer ligand were synthesized. The cyclometallation of 1,3-bis[(di-tert-butylphosphino)methyl]ferrocene with RuCl2(DMSO)4 in 2-methoxyethanol afforded the RuCl(CO)[{2,5-(But
2PCH2)2C5H2}Fe(C5H5)](RuCl(CO)
) complex (5). Complex 5 reversibly binds CO to form the RuCl(CO)2
complex (6). The analogous reaction in the presence of NaBAr′4 (Ar′ = 3,5-(CF3)2C6H3) produced the cationic complex {Ru(CO)2
}BAr′4 (7). The structures of complexes 5 and 7 were established by single-crystal X-ray diffraction. The X-ray diffraction study revealed an agostic interaction between
one of the C-H bonds of the axial (exo-oriented with respect to the ferrocene iron atom) tert-butyl group and the Ru atom in complexes 5 and 7.
Dedicated to Academician G. A. Abakumov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1695–1701, September, 2007. 相似文献
17.
Ingo Krossing Ulli Englert Eberhard Matern Jolanta Olkowska‐Oetzel Jerzy Pikies Gerhard Fritz 《无机化学与普通化学杂志》2002,628(2):446-452
tBu2P‐P=P(Me)tBu2 reacts with [Fe2(CO)9] to give [μ‐(1, 2, 3:4‐η‐tBu2P1‐P2‐P3‐P4tBu2){Fe(CO)3}{Fe(CO)4}] ( 1 ) and [trans‐(tBu2MeP)2Fe(CO)3]( 2 ). With [(η2‐C8H14)2Fe(CO)3] in addition to [μ‐(1, 2, 3:4‐η‐tBu2P1‐P2‐P3‐P4tBu2){Fe(CO)2PMetBu2}‐{Fe(CO)4}] ( 10 ) and 2 also [(μ‐PtBu2){μ‐P‐Fe(CO)3‐PMetBu2}‐{Fe(CO)3}2(Fe‐Fe)]( 9 ) is formed. 1 crystallizes in the monoclinic space group P21/c with a = 875.0(2), b = 1073.2(2), c = 3162.6(6) pm and β = 94.64(3)?. 2 crystallizes in the monoclinic space group P21/c with a = 1643.4(7), b = 1240.29(6), c = 2667.0(5) pm and β = 97.42(2)?. 9 crystallizes in the monoclinic space group P21/n with a = 1407.5(5), b = 1649.7(5), c = 1557.9(16) pm and β = 112.87(2)?. 相似文献
18.
Christoph M. Adams Giovanni Cerioni Andreas Hafner Hermann Kalchhauser Wolfgang von Philipsborn Roland Prewo Andreas Schwenk 《Helvetica chimica acta》1988,71(5):1116-1142
A variety of mono- and bis[Fe(CO)3(η4-diene)] complex with alky, CH2OH, CHO, COCH3, COOR, and CN substituents on the 1,3-diene system have been synthesized. Dienes with a (Z)-configuration terminal Me group show steric inhibition of metal complexation resulting in lower yields and formation of tetracarbonyl(η2-diene) and tricarbonyl(η4-heterodiene) complexes as additional products. Regioselective attack by C-nucleophiles at the carbonyl C-atoms of the functional group with or without concomitant 1,3 mogration of the Fe(CO)3 group was used to synthesize polyenes and isoprenoid building blocks as mono- or dinucliar Fe(CO)3 complexes. Wittig-Horner-type reactions of Fe(co)3-complexed synthons result in sterospecific formation of (E)-configurated olefins. The 1H-, 13C- and 57Fe-NMR spectra of olefinic and allylic organoiron complexes are reported, H,H,C,H, and C,C coupling constants have been evaluated and are analyzed in terms of the geometry of the coordinated diene. The results are corroborated by the crystal structure of tricarbonyl[3–6-η-((E)-6-methyl-3,5-heptadiene-2-one)]iron( 34 ) which shows an unusual distortion of the (CH3)2C = group, The 57Fe-NMR chemical shifts extend over the ranges of 0–600 ppm for [Fe(CO)3(η4-diene)] complexes, 780–1710 ppm for [Fe(CO)4(η3-allyl)] [BF4] and [FeX(CO)3(η4-allyl)] complexes, and 1270–1690 ppm for [Fe(CO)3(η4-enone)] complexes, relative to Fe(CO)5. 相似文献
19.
Zhi-Hong Ma Ming-Xia Zhao Fang Li Hong Wang Xue-Zhong Zheng Jin Lin 《Transition Metal Chemistry》2010,35(4):387-391
Cyclopentadienes (C5Me4R) [R = Allyl (1), n-Butyl (2), Benzyl (3), and PhMe-2 (4)] reacted with Fe(CO)5 in refluxing xylene to give new substituted tetramethylcyclopentadienyl dinuclear iron carbonyl complexes [(η
5-C5Me4R)Fe(CO)(μ-CO)]2 [R = Allyl (5), n-Butyl (6), Benzyl (7), and PhMe-2 (8)], respectively. The four new complexes 5–8 were characterized by elemental analysis, IR, and 1H NMR spectra. The crystal structures of complexes 5–7 were determined using single crystal X-ray diffraction. The crystal structure of complex 5 showed that allyl underwent isomerization to give the corresponding methyl-vinyl. A possible mechanism is discussed. The
X-ray crystal structures of complexes 5, 6, and 7 confirm the structure with bridging and terminal CO groups. They show that the steric effects of substituents influence the
Fe–Fe bond distances of the complexes. 相似文献
20.
Feng‐Bo Xu Li‐Juan Sun Zhen‐Ai Xuan Wei‐Dong Zhang Hui Cheng Zheng‐Zhi Zhang 《中国化学》2000,18(5):722-728
Reaction of a new type of bidentate ligand PhPQu [PhPQu = 2‐diphenylphosphino‐4‐methylquinoline] with Fe(CO)5 in butanol gave trans‐Fe(FpPQu‐P)(CO)3 (1). Compound 1, which can act as a neutral tridentate organometallic ligand, was reacted with I B, II B metal compounds and a rhodium complex to give six binuclear complexes with Fe? M bonds, Fe(CO)3 (μ‐Ph2PQu)MXn (2–7) [M= Zn(II), Cd(II), Hg(II), Cu(I), Ag(I), Rh(I)], and an ion‐pair complex [Fe(CO)3 (μ‐Ph2PQu)2HgI][HgI3]? (8). The structure of 8 was determined by X‐ray crystallography. Complex 8 crystallizes in the space group P‐1 with a = 1.0758(3), b = 1.6210(4), c=1.7155(4)nm; a=75.60(2), β=71.81(2), γ=81.78(2)° and Z = 2 and its structure was refined to give agreement factors of R=0.050 and Rw = 0.057. The Fe‐Hg bond distance is 0.2536nm. 相似文献