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A. S. Gordetsov S. V. Zimina E. M. Moseeva S. E. Skobeleva N. V. Kulagina V. V. Pereshein 《Russian Chemical Bulletin》1993,42(12):2021-2023
N-(5-Cyclopentadienylvanadium)benzenesulfonamide has been synthesized for the first time by treating benzenesulfonamide orN-(tributylstannyl)benzenesulfonamide with vanadocene.Deceased.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2107–2109, December, 1993. 相似文献
3.
The substituted sandwich complex crystallizes in monoclinic space groupP21/m withZ=2. Twinning to the (001) direction with the special conditionc
*/4a
* = cos
* causes systematic superposition of the reciprocal lattices of both domains and results in an apparent unit cell with double volume and the reflection condition (2h)kl, l=2n. The structure solution was obtained with the subset of intensity data for the predominant individuum and converged atR = 0.040,R
w
=0.046 for 832 independent observations and 122 variables. The molecules show disorder with respect to the crystallographic mirror plane. The structure is closely related to that of decamethylruthenocene. 相似文献
4.
《Polyhedron》1986,5(3):921-923
The treatment of (η-C5H5)OMo(μ-O)2MoO(η-C5H5) with excess phenylisocyanate at reflux in tetrahydrofuran yields the arylimido-substituted complex (η-C5H5)(NPh)Mo(η-NPh)2Mo(NPh)(η-C5H5), which has been characterized by elemental analysis, and mass, IR and 1H NMR spectra. 相似文献
5.
《Journal of organometallic chemistry》1992,429(3):C38-C40
The UV and visible absorption spectra of (Cp)(Ch)Cr (Cp = η5-C5H5, Ch = η7-C7H7) vapor show surprisingly well-resolved Rydberg structure. The first ionization potential (5.603 ± 0.007 eV) has been determined as a convergence limit of three Rydberg series. (Cp)(Ch)Cr is the first sandwich complex in which the lowest Rydberg transitions terminating at ns and np(σ) orbitals have vibrational structure. 相似文献
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Novikova L. N. Mazurchik B. A. Oprunenko Yu. F. Ustynyuk N. A. 《Russian Chemical Bulletin》2001,50(1):157-158
The kinetics of the reversible isomerization of the zwitterionic complex [(6-C13H9)Fe(5-C5H5)] (1) into dibenzoferrocene (2) was studied by electronic spectroscopy in the temperature range from 70 to 103 °C. The activation parameters of the reaction 1 2 were determined, E
a = 22.5 kcal mol–1. 相似文献
7.
T. Yu. Orlova Yu. S. Nekrasov P. V. Petrovskii M. G. Ezernitskaya Z. A. Starikova O. L. Lependina 《Russian Chemical Bulletin》2008,57(1):63-67
The metallation of the η5-C5H5(CO)2Fe-η1,η5-C5H4Mn(CO)3 complex with BunLi (THF, ?78 °C) followed by the treatment of the lithium derivative with Ph2PCl afforded the η5-Ph2PC5H4(CO)2Fe-η1,η5-C5H4Mn(CO)3 complex. The reaction of the latter with η5-C5H5(CO)3WCl in the presence of Me3NO produced the trinuclear complex η5-C5H5Cl(CO)2W-η1,η5-(Ph2P)C5H4(CO)2Fe-η1,η5-C5H4Mn(CO)3. The structure of the latter complex was established by IR, UV, and 1H and 31P NMR spectroscopy and X-ray diffraction. The reaction of MeSiCl3 with three equivalents of LiC5H4(CO)2Fe-η1,η5-C5H4Mn(CO)2PPh3 gave the hexanuclear complex MeSi[C5H4(CO)2Fe-η1,η5-C5H4Mn(CO)2PPh3]3. 相似文献
8.
S. Yu. Ketkov 《Russian Chemical Bulletin》1994,43(4):583-587
Electron absorption spectra of (5-cyclopentadienyl)(7-cycloheptatrienyl)niobium in solution and in the vapor phase have been measured for the first time. Possible variants of the band assignment for the spectrum of the complex in a solution have been considered. In the spectrum of the vaporous compound the bands at 29570, 31730, and 34630 cm–1 correspond to the electron transitions from the 4d(+) orbital to the lowest Rydberg p- and d-levels. The values of Rydberg transition terms and symmetry of p-states have been determined.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 634–638, April, 1994.The author is grateful to I. L. Fedyushkin for the synthesis of complex 1. 相似文献
9.
I. V. Shchirina-Eingorn L. N. Novikova N. A. Ustynyuk L. I. Denisovich M. G. Peterleitner 《Russian Chemical Bulletin》1996,45(7):1608-1610
The roe of oxidatively induced homolyhc scission a the C(sp3)-H bonds in the iron phenykychhexadienyl complexes Fe(5-6-PhC6H6)(5-C5H5) (1) depends on the spatial orientation of the Ph substitutent. In the case of the (1
endo
+) radical cation this process, resulting in the cationic biphenyl complex (Fe(6 -C6H5C6H5)(5-C5H5)]+ (2
+), is fast and proceeds for several minutes. In the case of the more stable radical cation (1
exo
+) the formation of 2+ is slow and takes tens minutes to complete.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1698–1700, July, 1996. 相似文献
10.
《Journal of organometallic chemistry》1986,316(3):315-318
The complex t-Bu(η5-C5H5)FE(CO)2 has been treated with triphenylphosphine in refluxing THF to produce t-BuCO(η5-C5H5)Fe(CO)(PPh3). The large steric bulk of the t-butyl group suggests that this reaction should be faster than the reaction involving the methyl group, and a kinetic investigation illustrates this to be the case. The same steric bulk predicts that the reaction with SO2 should be slow, and indeed we have been unable to effect the related SO2 insertion reaction. Attempts to prepare the corresponding t-Bu(η5-C5H5)W(CO)3 led to formation of the related isobutyl complex. 相似文献
11.
Sh. G. Mkoyan Z. G. Aliev L. O. Atovmyan P. V. Ivchenko 《Russian Chemical Bulletin》1995,44(2):296-299
The structure of a new ansa compound, (5-C5H4)CMe2(5-C9H6)TiCl2 (1), was studied by X-ray analysis:a = 15.00(1),b =15.500(5),c = 13.032(4) Å, = 92.66°(4),V = 3025.1(1) Å3, space groupP21/.,R = 0.038. The distorted tetrahedral coordination sphere of the Ti atom is formed by two Cl atoms and two -ligands. It was proposed that the angle () between theC-M direction and the line normal to M-Cp can be considered as one of the geometric parameters characteristic of the structure-properties correlation.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 305–308, February, 1995. 相似文献
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Rainer Bartsch Christian Müller Axel Fischer Peter G. Jones 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1-4)
Abstract Syntheses and structures of penta- and hexaphosphorus analogues of ferrocene have been described recently1. Unlike their simple ferrocene analogues, these complexes have further ligating potential towards other transition metal centres by virtue of the availability of the ring phosphorus lone-pair electrons that are not involved in the η5-coordination. We now describe the first examples of coordination compounds of the triphospha-ferrocene [Fe(η5-C5Me5) (η5-C2 tBu2P3]. In the ruthenium complex [Fe(η5-C5Me5)(η5-C2 tBu2P3) Ru3(CO)9] 2 two adjacent phosphorus atoms of the η5-C2 tBu2P3 ring are interlinked by a ruthenium carbonyl cluster in which all three ruthenium atoms interact with the phosphorus atoms. The tetrametallic nickel complex [Fe(η5-C5Me5)(η5-C2 tBu2P3)Ni(CO)2]2 3 represents the first example of intermolecular interlinkage of two phospha-ferrocene systems by two metal centres. 相似文献
14.
《Journal of organometallic chemistry》1987,330(3):415-428
The crystal and molecular structures of (η5-C5H5)Fe[η5--C5H4CCo3(CO)9] (1), Pna21, α 17.354, b 11.463, c 11.207 Å Z = 4, R = 0.053, Rw = 0.056 for 939 reflections (I>3σ(I)) at 293 K, and (η5-C5H5Fe[η5--C5H4CCo3(η5C5H5)3CH] (2), P21/n, a 13.807(9), b 11.254(4), c 13.991(9) Å, β 99.98(5)°, Z = 4, R = 0.033 and Rw = 0.033 for 3051 observed reflections (I>3σ(I)) at 180 K, have been determined by X-ray methods.The results provide a detailed characterisation of related tricobalt-carbon complexes directly bound to ferrocene residues. In 1 the ferrocenyl moiety tops the pyramidal CCo3 cluster core, while in 2 the CCo3C core is bipyramidal with a ferrocenyl substituent on one capping carbon atom and a hydrogen atom at the other. In both cases the ferrocenyl group is tilted towards one cobalt atom of the cluster core, a distortion believed to be the consequence of the non-degeneracy of the carbyne p(π) orbitals resulting from a cooperative π-interaction between the clusters and the ferrocenyl substituents. 相似文献
15.
The electron density distribution and atomic displacements were analyzed based on the results of precision low-temperature X-ray diffraction studies of a series of isostructural (Pnma, Z = 4) mixed metallocenes (5-C5H5)M(5-C7H7) (M = Ti, V, or Cr) and (5-C5H5)Ti(8-C8H8). The barriers to rotation of the cyclic ligands were evaluated based on rms libration amplitudes. Analysis of the deformation electron density demonstrated that the character of the M--(-ligand) chemical bond depends substantially both on the nature of the metal atom and the size of the ligand. Lowering of the local symmetry of the (5-C5H5)M(5-C7H7) complexes to CS leads to distortion of the cylindrical symmetry of the electron density distribution observed in vanadocene (5-C5H5)2V and titanocene (5-C5H5)Ti(8-C8H8). 相似文献
16.
通过(η5-RC5H4)MCoFeS(CO)8(la:M=Mo,R=H;1b:M=Mo,R=MeO2C;lc:M=Mo,R=Me;1d:M=Mo,R=EtO2C;1e:M=W R=H)与Cp2Ni的等瓣置换反应合成了簇合物(η5-C5H5)(η5-RC5H4)MNiFeS(CO)5(2a:M=Mo,R=H;2b:M=Mo,R=MeO2C;2c:M=Mo,R=Me;2d:M=Mo,R=EtO2C;2e:M=W,R=H).进一步通过2a,b与Co2(CO)8以及2c,d与Fe2(CO)9的等瓣置换反应,分别合成了(η5-RC5H4)MoCoFeS(CO)8(la:R=H;1b:R=MeO2C)和(η5-C5H5)(η5-RC5H4)MoNiFe2S(CO)10(3a:R=Me;3b:R=EtO2C).新簇合物2c-e和3a,b的结构均经元素分析、IR及1H NMR谱学表征.此外,还对我们以前合成的一个3a,b类似物(η5-C5H5)(η5-MeO2CC5H4)MoNiFe2S(CO)10(3c)成功地进行了单晶结构分析.3c属单斜晶系,Cc(#9)空间群,晶胞参数a=1.0051(3)nm,b=1.5311(5)nm,c=1.7437 nm,β=105.5(3)°,Z=4.最终一致性因子R=0.025,Rw=0,033. 相似文献
17.
IntroductionSinceK pfdiscoveredthatdicyclopentadi enyltitaniumdichlorideexhibitedantitumouractionin1979,1alargenumberofcyclopentadienyltitaniumcom plexesbearingdifferentsubstituentshavebeensynthe sized .2 ,3Theexperimentaldatarevealedthat (Cp) 2 TiX2(X =halogen ,p… 相似文献
18.
《Journal of organometallic chemistry》1987,327(1):39-54
Bis(η5-indenyl)dicarbonyltitanium has been produced in 47% yield by reduction of bis(η5-indenyl)dichlorotitanium with activated aluminum in THF solution under a carbon monoxide atmosphere. Bis(η5-indenyl)dicarbonylzirconium can similarly be prepared in 45% yield by the reductive carbonylation of bis(η5-indenyl)dichlorozirconium using activated magnesium turnings. IR spectral evidence has been obtained for the corresponding hafnium analog, although it could not be isolated. Detailed syntheses for the precursors (η5-indenyl)2MCl2 (M = Ti, Zr, Hf) have been developed. Bis(η5-indenyl)dicarbonyltitanium crystallizes in the monoclinic space group C2/c with unit cell parameters a 30.435(8), b 7.357(5), c 28.279(8) Å and β 90.93(5)°. Refinement of 3530 observed reflections lead to final agreement indices of R = 0.052 and Rw = 0.049. Bis(η5-indenyl)dicarbonylzirconium crystallizes in the monoclinic space group P21/n with unit cel parameters of a 7.288(5), b 14.398(8), c 15.273(7) Å and β 89.84(5)°. Refinement of 2253 observed reflections lead to final agreement indices of R = 0.049 and R2 = 0.055. 相似文献
19.
《Journal of organometallic chemistry》1987,326(1):C13-C16
It is shown that (1,2,7-η3-2-Me-benzyl)(η5-C5H5)Mo(CO)2 exits in solution as one isomer which is fluxional, probably via (7-η1-2-Me-benzyl)((η5-C5H5)Mo(CO)2, with ΔG≠370 = 23.6 ± 1.0 kcal mol−1. In contrast, (1,2,7-η3-3-Me-benzyl)(η5-C5H5)Mo(CO)2 exits as two isomers at −20°C, which undergo interconversion at room temperature with ΔG≠ 15.7 kcal mol−1. This dynamic process is an allyl rotation. It is probable that there is also a low energy [1,5]-sigmatropic shift. 相似文献
20.
Yu. K. Gun'ko V. K. Bel'skii G. L. Soloveichik B. M. Bulychev 《Russian Chemical Bulletin》1993,42(6):1086-1089
X-ray structural analysis of a samarium triscyclopentadienyl complex, Cp3Sm·OC4H8 (1), and a samarium ionic salt, [Li(Et2O)2][Cp3Sm(-Cl)SmCp3] (2), was carried out. In both compounds coordination saturation is achieved by coordination of the THF molecule (in1) or the Cl– anion (in2) to the monomeric fragment Cp3Sm. An unusual coordination of the Li+ cation was observed in complex2: it is bound to one of the 5-type cyclopentadienyl rings in addition to two ether molecules.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1129–1132, June, 1993. 相似文献