共查询到20条相似文献,搜索用时 15 毫秒
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《Journal of organometallic chemistry》1989,377(1):C17-C22
X-ray structural studies of new thermolysis products from the reaction of Ru3(CO)12 in heptane in the presence of 1,3,5-trimethylbenzene (mesitylene) confirm that they are the decaruthenium carbido-cluster dianion [Ru10C(CO)24]2− (I) and the hydrido decaruthenium carbido-cluster monoanion [HRu10C(CO)24]− (II). Both anions have the giant tetrahedron Ru10 metal framework, and the monohydride provides the first example of a hydrido ligand in a tetrahedral Ru4 cavity. 相似文献
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《Journal of organometallic chemistry》1987,335(3):365-378
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《Journal of organometallic chemistry》1988,338(3):C35-C37
Rearrangement of ArPCPAr (Ar = 2,4,6-But3C6H2) involving hydrogen migration from carbon to phosphorus occurs on heating with [W(CO)5(THF)], but with [Fe3(CO)12] an unusual carbon to carbon hydrogen migration results. 相似文献
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《Journal of organometallic chemistry》1986,303(3):375-385
Treatment of (CO)5WC[N(CH3)2]C6H4-p-CH3 (1) with lithium diisopropylamide (LDA) in THF at −78°C followed by quenching with D2O leads to incorporation of deuterium into the (E)-N-methyl group only. Reaction of the anion of 1 with benzyl bromide at −78°C followed by quenching with water gave the E-isomer of (CO)5WC[N(CH3)CH2CH2C6H5]C6H4-p-CH3 (2E, 26%) and recovered 1. When a mixture of the anion of 1 and benzyl bromide was warmed from −78°C to ambient temperature, a mixture of the E-isomer of the dibenzylated product (CO)5WC[N(CH3)CH(CH2C6H5)2]C6H4-p-CH was obtained. Reaction of the anion of 1 with allyl bromide gave (CO)5WC[N(CH3)CH2CH2CHCH2]C6H4-p-CH3 (5, 38%) and with methyl iodide gave a mixture of (CO)5WC[N(CH3)CH2CH3]C6H4-p-CH3 (6, 7%) and (CO)5W C[N(CH3)CH(CH3)2]C6H4-p-CH3 (7, 16%). 相似文献
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《Polyhedron》2002,21(18):1817-1823
The oxidative addition reaction of SnCl4 with [W(CO)4(NCMe)(PPh3)] in acetonitrile gives a mixture of seven-coordinate tungsten(II) compounds: [WCl(SnCl3)(CO)3(NCMe)(PPh3)] (1), [WCl2(CO)3(NCMe)(PPh3)] (2), [WCl(SnCl3)(CO)2(NCMe)2(PPh3)] (3), and [WCl2(CO)2(NCMe)2(PPh3)] (4) identified by IR and NMR (1H, 13C{1H}, and 31P{1H}) studies. Treatment of [W(CO)4(NCMe)(PPh3)] with 1 equiv. of SnCl4 in CH2Cl2 solution besides compounds 1 and 2 also gives ionic species such as [HPPh3]+ and [SnCl6]2− and cationic tungsten(II) complexes. The crystal structure of one of these, [WH(CO)3(NCMe)(PPh3)2][SnCl5·MeOH] (5), has been established by single-crystal X-ray diffraction. The IR, 1H, 13C{1H} and 31P{1H} spectra of 5 are also described and can be correlated with the crystallographically observed geometry. A notable feature of 5 is the presence of an agostic interaction of the hydride ligand with one of the carbonyl ligands. 相似文献
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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
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《Journal of organometallic chemistry》1992,430(1):C10-C14
The lone-pair electrons of one of the two directly bonded phosphorus atoms of the P3C2tBu2 ring in the penta- or hexaphosphaferrocene complexes [Fe(η5-P3C2tBu2)(η5-P3C2tBu3)] and [Fe(η5P3 C2tBu2)2] can ligate to other metal centres to afford novel bi- and tetrametallic complexes, whose structures have been elucidated by NMR and single crystal X-ray crystallographic studies. 相似文献
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Jonathan Bould John D. Kennedy Rhodri Ll. Thomas Nigam P. Rath Lawrence Barton 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(11):1245-1247
The structural characterization of the osmahexaborane 2-carbonyl-2,2-bis(triphenylphosphine)-nido-2-osmahexaborane(9), [Os(B5H9)(C18H15P)2(CO)], (I), a metallaborane analogue of B6H10, confirms the structure proposed from NMR spectroscopy. The structure of the osmadecaborane 6-carbonyl-6,6-bis(triphenylphosphine)-nido-6-osmadecaborane(13), [Os(B9H13)(C18H15P)2(CO)], (IV), is similarly confirmed. The short basal B—B distance of 1.652 (8) Å in (I), not bridged by an H atom, mirrors that in the parent hexaborane(10) [1.626 (4) Å]. 相似文献
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《Journal of organometallic chemistry》1987,326(1):C46-C48
Reaction of [NBu4]2[Pt12(CO)24] with [Ag(PPh3)4]ClO4 and PPh3 leads to two isolable platinum-silver clusters; the title complex was characterised by single crystal X-ray diffraction. the Pt3Ag core is tetrahedral; one Pt atom is seven-coordinated, the other two are six-coordinate. 相似文献
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《Journal of Coordination Chemistry》2012,65(16):2771-2781
The methylation product of the reaction between [Pt2(µ-S)2(PPh3)4] and MeI in diethyl ether has been reinvestigated using positive-ion electrospray mass spectrometry and found to be contaminated with the dimethylated iodide-containing complex [Pt2(µ-SMe)2(PPh3)3I]+, which is believed to be formed early in the reaction. New, facile routes to the monomethylated complex [Pt2(µ-S)(µ-SMe)(PPh3)4]+ have been developed using mild methylating agents. Heating [Pt2(µ-S)2(PPh3)4] in neat dimethyl methylphosphonate results in rapid and selective conversion to [Pt2(µ-S)(µ-SMe)(PPh3)4]+; methylation with Me3S+OH? in refluxing methanol also affords pure [Pt2(µ-S)(µ-SMe)(PPh3)4]+, isolated as its hexafluorophosphate salt. The X-ray structure of the previously reported complex [Pt2(µ-SMe)2(PPh3)2I2] has also been undertaken. 相似文献
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《Chemical physics letters》1987,135(6):525-528
The pressure shifts of the first three bands appearing in the visible spectra of [Pt3(CO)6]2−n (n = 3–5) have been measured in solution over the range 0–10 kbar. Previous electronic calculations performed on the dimer in conjunction with these results afford a possible set of assignments for the first three bands appearing in the visible spectrum for the dimer. 相似文献
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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
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《Journal of Coordination Chemistry》2012,65(19):3412-3422
Reactions of [Pt2(μ-S)2(PPh3)4] with zinc acetate and an ancillary chelating ligand L (HL = 8-hydroxyquinoline, 8-tosylaminoquinoline or maltol) with added trimethylamine in methanol give new cationic platinum–zinc sulfide aggregates [Pt2(μ-S)2(PPh3)4ZnL]+, isolated as their BF4? salts. The complexes were characterized by NMR spectroscopy, ESI mass spectrometry, microelemental analysis, and an X-ray structure determination of the tosylamidoquinoline derivative [Pt2(μ-S)2(PPh3)4Zn(TAQ)]BF4, which showed a distorted tetrahedral coordination geometry at zinc. Additional examples, containing picolinate, dithiocarbamate, or dithiophosphinate ligands were also synthesized and partly characterized in order to demonstrate a wider range of available derivatives. 相似文献
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《Journal of organometallic chemistry》1986,301(2):237-245
Trans-PtH2(PCy3)2 (1) reacts with phenylisocyanate (2) and with diphenylketene (3) to yield the formamido complex (4) and the vinyloxo complex (5), respectively. The structure of 5 has been determined by X-ray diffraction. 相似文献
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Reaction of dinuclear platinum(II) sulfido complex [Pt2(μ-S)2(PPh3)4] with 1,3-propanesultone gives the novel zwitterionic monoalkylated thiolate complex [Pt2(μ-S){μ-S(CH2)3SO3}·(PPh3)4], which was characterized by NMR spectroscopy, electrospray ionisation mass spectrometry, and a single crystal X-ray structure determination. Crystals are monoclinic, space group P2(1)/c with unit cell dimensions a = 16.8957(3) Å, b = 15.5031(3) Å, c = 28.0121(5) Å, β = 99.780(1)°, for Z = 4. 相似文献
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Roberto Della Pergola Luigi Garlaschelli Mario Manassero Mirella Sansoni Donatella Strumolo 《Journal of Cluster Science》2001,12(1):23-34
The cluster [HIr5(CO)12]2- (1) was prepared by condensation of [HIr4(CO)11]- and [Ir(CO)4]- (molar ratio 1:1) in refluxing THF, with almost quantitative yields. Its solid state structure was determined by X-ray diffraction at low temperature on the salt [PPh3CH2Ph]2[HIr5(CO)12]. The metal atoms define a trigonal bipyramidal arrangement. The hydride ligand was located indirectly as a bridge between apical and equatorial metal atoms. The phosphine-substituted cluster [HIr4(CO)10PPh3]- (2) was synthetized by CO displacement on [HIr4(CO)11]-, in THF at room temperature. This reaction is selective, with no traces of polysubstitution products. In the solid state, the hydride and the triphenylphosphine are axially bound on basal iridium atoms; the terminal hydrogen atom was directly located by X-ray analysis at a Ir–H distance of 1.57(9) Å. On the contrary, two isomers are present in THF solution, and they interconvert rapidly at room temperature, as shown by1H and 31P NMR spectra. 相似文献