共查询到20条相似文献,搜索用时 15 毫秒
1.
R. Uson L.A. Oro C. Foces-Foces F.H. Cano A. Vegas M. Valderrama 《Journal of organometallic chemistry》1981,215(2):241-253
The preparation and properties of complexes of the general formulae [Rh(TFB)(diolefin)]ClO4, [Rh(TFB)(arene)]ClO4 and [Rh(TFB)L2]ClO4, (TFB = tetrafluorobenzobarrelene, L = dimethylsulfoxide and tetrahydrothiophen) are described. The crystal structures of the arene complexes (arene = C6Me6, C6H3Me3 and C6H4Me2) have been solved by X-ray methods. The three compounds crystallize in quite similar lattices: R3c, a = b = 27.122, 26.233, 25.731 and c = 17.079, 16.388, 16.256 Å, respectively. δR-plots for about 2000 reflections show the agreement in the refinements carried out up to R-values of 5%, 5% and 4% respectively. The Rh atom is coordinated to the double bonds of the TFB and to the arene ring in all three compounds, but the deviation from planarity of the arene and its relative position with respect to the TFB moiety varies. 相似文献
2.
The [(C6H6)RuCl(1,10-C12H8N2)]Cl complex has been prepared and studied by IR, UV-Vis, 1H NMR spectroscopy and X-ray crystallography. The complex was prepared in reaction of [(C6H6)RuCl2]2 with 1,10-phenatroline in acetone. The electronic spectrum of the compound has been calculated using the TDDFT method. 相似文献
3.
Kazuhiro Kawabata 《Journal of organometallic chemistry》2004,689(2):405-410
[Rh(η5-C5H5)(C3S5)] and [Rh(η5-C5Me5)(C3S5)]2 [C3S52−=4,5-disulfanyl-1,3-dithiole-2-thionate(2-)] were prepared by reactions of [NMe4]2[C3S5] with [Rh(η5-C5H5)Cl2]2 and [Rh(η5-C5Me5)Cl2]2, respectively. Their X-ray crystal structural analyses revealed a monomeric form for the former complex and a dimeric geometry containing bridging S-Rh-S bonds for the latter in the solid state. They were reacted with bromine to afford [RhBr(L)(C3S5)] (L=η5-C5H5 and η5-C5Me5) with the Rh-Br bond and one electron-oxidation on the C3S5 ligand. ESR spectra and spin densities for these oxidized species are discussed. 相似文献
4.
Layered organic-inorganic composite materials (C5H10N3)PbX4 (X=Br 1, Cl 2) containing histaminium dications were grown via a solution-cooling process, and their structure and optical properties were determined. The organic ligand-histaminium introduced into the corner-sharing octahedra of the ‘PbX4-layer’ contains both primary ammonium and imidazolium different from the traditionally primary amine found in this system. As comparison, another analogous amine of 3-amino-1,2,4-triazol was used as ligand to coordinate with PbBr2 in acid solution. A novel complex (C2H2N4)PbBr3 (3) was obtained with zigzag PbBr2 chains different from the PbX4 layer in compound as 1 and 2. The hybrid (C5H10N3)PbX4 show exciton absorption at 339 nm for X=Cl and 419 nm for X=Br with the corresponding emission at 360 and 436 nm, respectively. The different PbBr2 chain structure of compound 3 does not show photoluminescence. 相似文献
5.
在无水乙醇中,用吡咯烷二硫代氨基甲酸铵(APDTC)和1,10-邻菲咯啉(o-phen·H2O)与TmCl3·3.65H2O作用,合成了未见文献报道的三元固态配合物,确定它的组成为Tm[(C5/sub>H8NS2)3(C12H8N2)]。 用RD496-Ⅲ微量热计测定了298.15 K下水合氯化铥及两个配体在无水乙醇中的溶解焓,两个配体醇溶液的混合焓及不同温度下标题化合物液相生成反应的焓变。在实验和计算基础上,得到了液相生成反应的热力学参数(活化焓、活化熵和活化自由能),速率常数和动力学参数(表现活化能、频率因子和反应级数)。通过合理的热化学循环,求得了298.15 K时标题化合物的固相生成反应焓变;推导了用该热量计测定固态物质比热容的计算式,并测定了题目配合物298.15 K的比热容。用RBC-Ⅱ精密转动弹热量计测定了题目配合物的恒容燃烧热, 计算了它们的标准摩尔燃烧焓和标准摩尔生成焓。 相似文献
6.
The complex dicarbonylbis(diphenylethylphosphine)platinum, Pt(CO)2[P(C6H5)2(C2H5)]2, crystallizes in either of the enantiomorphous space groups P3121 (No. 152) and P3221 (No. 154) with cell dimensions a = 10.64(1), c = 22.06(1) Å, U = 2163 Å3; pc = 1.564 g/cm3 for Z = 3, pm = 1.55(3) g/cm3. The intensities of 1177 independent reflections have been determined by counter methods with MoKα monochromatized radiation. The structure has been solved by the heavy atom method. The refinement, carried out by full-matrix least squares down to a final R factor of 0.042, has enabled the absolute configuration of the crystal sample (space group P3121) to be ascertained. The molecule is roughly tetrahedral, and has the metal atom lying on a two-fold axis of the cell. Bond parameters are: PtC = 1.92(2) Å, PtP = 2.360(4) Å, CPtC = 117(1)° and PPtP = 97.9(2)°. The PtC2 and PtP2 moieties make a dihedral angle of 86.0(3)°. The overall C2 symmetry of the molecule is probably only a statistically averaged situation, a disorder in the PtCO interactions being apparent from the orientations of the thermal ellipsoids of the C and O atoms. 相似文献
7.
A nonmetal pentaborate [C6H13N2][B5O6(OH)4] (1) has been synthesized by 1,4-diazabicyclo[2.2.2] octane (DABCO) and boric acid, and characterized by single-crystal X-ray diffraction, FTIR, elemental analysis, and thermogravimetric analysis. Compound 1 crystallizes in the monoclinic system with space group Cc (no. 9), a=10.205(2) Å, b=14.143(3) Å, c=11.003(2) Å, β=113.97(3)°, V=1451.1(5) Å3, Z=4. The anionic units, [B5O6(OH)4]−, are interlinked via hydrogen bonding to form a three-dimensional (3D) supramolecular network containing large channels, in which the protonated [C6H13N2]+ cations are located. Second-harmonic generation (SHG) measurements on the powder samples reveal that 1 exhibits SHG efficiency approximately 0.9 times that of potassium dihydrogen phosphate (KDP). 相似文献
8.
9.
Sarah J. Ewing 《Journal of solid state chemistry》2011,184(7):1800-6211
A new organically templated indium selenide, [C6H16N2][In2Se3(Se2)], has been prepared hydrothermally from the reaction of indium, selenium and trans-1,4-diaminocyclohexane in water at 170 °C. This material was characterised by single-crystal and powder X-ray diffraction, thermogravimetric analysis, UV-vis diffuse reflectance spectroscopy, FT-IR and elemental analysis. The compound crystallises in the monoclinic space group C2/c (a=12.0221(16) Å, b=11.2498(15) Å, c=12.8470(17) Å, β=110.514(6)°). The crystal structure of [C6H16N2][In2Se3(Se2)] contains anionic chains of stoichiometry [In2Se3(Se2)]2−, which are aligned parallel to the [1 0 1] direction, and separated by diprotonated trans-1,4-diaminocyclohexane cations. The [In2Se3(Se2)]2− chains, which consist of alternating four-membered [In2Se2] and five-membered [In2Se3] rings, contain perselenide (Se2)2− units. UV-vis diffuse reflectance spectroscopy indicates that [C6H16N2][In2Se3(Se2)] has a band gap of 2.23(1) eV. 相似文献
10.
C5Me5Rh(L)P2Me4 (L = CO, C2H4) reacts with [C5Me5Rh(μ-CO)]2, to give the trinuclear complexes C5Me5(L)Rh(μ-P2Me4)RhC5Me5(μ-CO)2RhC5Me5 (VI, VII). In the reactions of C5Me5Rh(CO)P2Me4 with C5H5(CO)2 (M = Rh, Co) and C5H4RMn(CO)3 (R = H, Me), the homo- and hetero-metallic binuclear compounds C5Me5(CO)Rh(μ-P2Me4)M(CO)C5H5 (VIII, IX) and C5Me5(CO)Rh(μ-P2Me4)Mn(CO)2C5H4R (X, XI) are obtained in almost quantitative yield. The X-ray structure of the complex C5Me5[P(OMe)3]Rh(μ-CO)2RhC5Me5 (III), which is structurally related to VI and VII, has been determined. The molecule contains an unsymmetrical, non-planar Rh2C2-skeleton with different Rh-C(O) bond lengths. The Rh-Rh distance is 268.5(1) pm; the planes of the two five-membered rings form an angle of 62.6°. 相似文献
11.
R. Uson L.A. Oro C. Foces-Foces F.H. Cano S. Garcia-Blanco M. Valderrama 《Journal of organometallic chemistry》1982,229(3):293-304
The preparation of arene-rhodium(I) complexes of the general formula Rh(Me3TFB)PhBPh3 and [Rh(Me3TFB)(arene)]ClO4 (Me3TFB = trimethyltetrafluorobenzobarrelene; arene = C6H6?nMen (n = 0, 1, 2, 3, 4 or 6); C6H6?nXn (X = F, n = 2 or 6; X = Cl, n = 1 or 2) are described. For arenes of the type C6H6?nXn the dissociation of the coordinated arene (studied by NMR spectroscopy in deuteroacetone) is complete, but for arenes of the type C6H6?nMen it decreases with increasing methyl substitution in the arene ligand.The crystal structure of [Rh(Me3TFB)(1,4-C6H4Me2)]ClO4 has been determined by X-ray diffraction. The compound crystallizes in the Pbca space group, with lattice periodicities of 17.7393(4), 15.7816(3) and 16.0071(3) Å. δR-analysis, for the 3953 total recorded reflections, support the refinement carried out to a final R-value of 0.062. The bonding of the arene to the rhodium is η6, with the ring slightly puckered to give a distorted skew conformation. 相似文献
12.
The crystal structure of [Ir(Me3TFB)(C6Me6)]ClO4 has been determined by X-ray diffraction. Lattice constants are a 16.9092(7), b 17.7120(7), c 16.8635(6) Å and β 97.984(3)° in a C2/c monoclinic lattice. The agreement factors are R, 0.038 and Rw 0.048 for the 3321 reflexions with I > 3σ(I). The coordination characteristics are similar to those of the corresponding rhodium analogues. 相似文献
13.
The crystal and molecular structure of the monoligand trimetallic complex [{Rh(C5Me5)}3Cl5np3]PF6 · 0.5 C3H8O (np3 tris(2-diphenylphosphinoethyl)-amine) have been established by a single-crystal X-ray diffraction study. The cation of the complex contains two Rh(C5Me5)Cl2 units each bound through the metal to one phosphorus atom of the ligand and a Rh(C5Me5)Cl group in which the rhodium is bound to the third phosphorus atom and to the nitrogen of the tetradentate ligand.The crystals are triclinic, space group P, with cell dimensions a 28.598(8), b 13.757(4), c 10.748(3) Å, α 90.69(4), β 96.67(4), γ 99.71(4)°, Dc 1.38 g cm?3 for Z 2. The structure was solved by three dimensional Patterson and Fourier syntheses and refined by least-squares techniques to a final conventional R value of 0.098. 相似文献
14.
Henri Brunner Gundelinde Kerkien Joachim Wachter 《Journal of organometallic chemistry》1982,224(3):295-300
η5-C5H5(CO)2FeNa reacts with the benzimide chlorides C6H5(Cl)CNR (R CH(CH3)2, C6H5) in boiling THF to give the η1-iminoacyl complexes η5-C5H5 (CO)2Fe[η1-C(C6H5)NR]. Alternatively, the new Fe complexes [η5-C5H5(CO)FeCH3PF6 (IV) and [η5-C5H5(CO)2FeC(C6H5)N(CH3)C(C6H5)NCH3]PF6 (V) are formed under the same conditions, if R CH3. Hudrolysis of the CN single bond of the ligand in V, not stabilized by a chelate effects as in IV, results in the formation of [η5-C5H5(CO)2FeC(C6H5)NHCH3]PF6 (VII). Reaction of η5-C5H5(CO)2 with N-benyzylbenzimido chloride yields η5-C5H5(CO)2FeCH2C6H5 as the only isolated product. 相似文献
15.
Bruno Therrien Ludovic Vieille-Petit Yoshihisa Sei 《Journal of organometallic chemistry》2004,689(17):2820-2826
The hydrogen-bonded systems formed between monocarboxylic acid derivatives and the trinuclear arene-ruthenium cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ (1) have been studied in solution by cold-spray ionisation mass spectroscopy (CSI-MS) and in the solid state by single-crystal X-ray structure analysis of the tetrafluoroborate salts. The presence of 1:1 (acid:cluster) adducts in acetone solution has been clearly demonstrated by CSI-MS. Single-crystal X-ray structure analyses of selected acid-cluster complexes show that in every case the hydroxyl of the acid function interacts strongly with the μ3-oxo ligand of cation 1, the O ? O distance ranging from 2.499(9) to 2.595(11) Å. 相似文献
16.
17.
Franc Perdih 《Journal of fluorine chemistry》2006,127(10):1289-1293
[Na{Ti2(C5Me5)2F7}] (1) was prepared from sodium fluoride and [{Ti(C5Me5)F3}2] [H.W. Roesky, et al., Angew. Chem. Int. Ed. Engl. 31 (1992) 864-866]. The solid-state 1 consists of a polymeric chain of two rows of dititanate anions [Ti2(C5Me5)2F7]− connected by sodium ions in the middle of the chain. Each sodium ion is coordinated by five fluorine atoms from three [Ti2(C5Me5)2F7]− anions. The variable-temperature 19F NMR of CD3CN solution of 1 revealed interconversions of monomeric species [Na(CD3CN)n{Ti2(C5Me5)2F7}] (1solv) with different number of CD3CN ligands on the sodium ion. The addition of HMPA to the CD3CN solution of 1 allows 19F NMR observation of 1·HMPA (1a) and 1·HMPA·CD3CN (1b) in the slow exchange. The solid-state structure of [NaTi6(C5Me5)5F20(H2O)]·(THF) (2·THF) reveals the sodium ion coordinated by four fluorine atoms from the anion [Ti2(C5Me5)2F7]− and by three fluorine atoms from the cluster [Ti4(C5Me5)3F13(H2O)]. 相似文献
18.
Electronic energies, geometries, and harmonic vibration frequencies for the reactants, products, and transition state for the Cl(3P)+C2H6→C2H5+HCl abstraction reaction were evaluated at the HF and MP2 levels using several correlation consistent polarized-valence basis sets. Single-point calculations at PMP2, MP4, QCISD(T), and CCSD(T) levels were also carried out. The values of the forward activation energies obtained at the MP4/cc-pVTZ, QCISD(T)/cc-pVTZ, and CCSD(T)/cc-pVTZ levels using the MP2/cc-pVTZ structures are equal to −0.1, −0.4, and −0.3 kcal/mol, respectively. The experimental value is equal to 0.3±0.2 kcal/mol. We found that the MP2/aug-cc-pVTZ adiabatic vibration energy for the reaction (−2.4 kcal/mol) agrees well with the experimental value −(2.2–2.6) kcal/mol. Rate constants calculated with the zeroth-order interpolated variational transition state (IVTST-0) method are in good agreement with experiment. In general, the theoretical rate constants differ from experiment by, at most, a factor of 2.6. 相似文献
19.
The crystal and molecular structure of hexaphenylditin selenide (C6H5)3SnSeSn(G6H5)3 was determined by X-ray diffraction data and was refined to R 0.055. The compound is monoclinic, space group P21, with a 9.950(4), b 18.650(7), c 18.066(6) Å, β 106.81(4)°, Z 4. The two molecules in the asymmetric unit differ slightly in their conformations, both having approximate C2 symmetry. Bond lengths and angles are: SnSe 2.526 (2.521(3) ? 2.538(3)) Å; SnC 2.138 (2.107(16)?2.168(19)) Å; SnSeSn 103.4(1)°, 105.2(1)°. There are only slight angular distortions at the SnSeC3 tetrahedra (SeSnC angles: 104.3(5)?114.8(4)°). The bond data indicate essentially single bonds around the Sn atoms. 相似文献
20.
M. Valderrama M. Scotti R. Ganz L.A. Oro F.J. Lahoz C. Foces-Foces F.H. Cano 《Journal of organometallic chemistry》1985,288(1):97-107
The preparation of cationic arenerhodiiim(I) complexes of the type [Rh(DQ)-(arene)]PF6 (DQ = duroquinone; arene = C6H6-nMen, n duroquinone complexes with Group VB donor ligands are described. The crystal structure of [Rh(DQ)(C6H5Me)]PF6 has been determined by X-ray diffraction. The compound crystallizes in the P21/n space group, in a unit cell of dimensions a 15.9866(5), b 11.8438(3), c 9.9968(3) Å, β 98.473(4)Å. The structure was solved by Patterson and Fourier methods and refined to R and Rw values of 0.062 and 0.076, respectively. The Rh atom is coordinated to a toluene group (η6) and a duroquinone ligand (η4), which eclipse each other. Both ligands are distorted to adopt boat-like conformations. 相似文献