[(Mes3Sn)2MoO4], a Monomeric Triorganotin Molybdate Mes3SnBr (Mes = 1, 3, 5‐trimethylphenyl) reacts with (NBu4)2[Mo6O19] in the presence of (NBu4)OH (in CH3CN as solvent) to form [(Mes3Sn)2MoO4]. Alternatively the title compound can be obtained from the reaction of [MoO2(acac)2] (acac = 2, 4‐pentadionate) with Mes3SnOH in isopropanol. [(Mes3Sn)2MoO4] forms monoclinic crystals, space group C2/c, with a = 2271.6(3) pm, b = 825.2(1) pm, c = 2739.9(5) pm, β = 90.96(2)°. The crystal structure consists of isolated molecules in which a tetrahedral MoO4 unit is connected to two terminal Mes3Sn groups. The Mo‐O distances range from 169.6(4) to 181.1(3) pm and the Sn‐O distance is 204.8(3) pm. 相似文献
The synthesis and structure of a Zn-Zn-bonded compound supported by a doubly reduced alpha-diimine ligand, [Na(THF)2]2 x [LZn-ZnL] (L = [(2,6-(i)Pr2C6H3)N(Me)C]2(2-)) are reported, with a Zn-Zn bond length of 2.399(1) angstroms. 相似文献
The hydrolysis of [ClP(mu-NtBu)]2 with H2O-Et3N in thf, followed by in situ lithiation with nBuLi gives the Li13 cage [[[O-P(mu-NtBu)]2Li2]3(LiCl)6Li(Cl/OnBu)0.5(thf)7], containing a [O-P(mu-NtBu)]2(2-) dianion that is isoelectronic with ligands of the type [(RN)P(mu-NR)]2(2-). 相似文献
(E)-[(2-Cyclohexenyl)vinyl]triaryitin (aryl=phenyl, p-tolyl) were synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy. The crystal structure of (E-)[(2 cyclohexenyl)vinyl]triphenyltin was also determined by the X-ray diffraction. Experiments show that this compound has the conjugated system, which makes it have possible bioactivity and antitumor activity. 相似文献
(E)-[(2-Cyclohexenyl)vinyl]triaryltin (aryl=phenyl, p-tolyl) were synthesized and characterized by elemental analysis, IR, 1H NMR spectroscopy. The crystal structure of (E)-[(2-cyclohexenyl)vinyl]triphenyltin was also determined by the X-ray diffraction. Experiments show that this compound has the conjugated system, which makes it have possible bioactivity and anti-tumor activity. 相似文献
The preparation and the crystal structure of the title compound are described. C6H5CH[NHCOOC(CH3)3]CH2OH is monoclinic with the following unit-cell dimensions: a = 10.354(2), b = 6.533(3), c = 10.505(1) Å, β = 98.58(1)∘. The space group is P21 and Z = 2. The crystal-structure determination was run by using 1481 independent reflexions with a final R value of 0.033 (Rw = 0.043). 相似文献
[K(2,2,2-crypt)](2)[As(7)]·THF, 1 (2,2,2-crypt = 4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane) is the first well characterized seven-atom radical anion of group 15. UV-Vis spectroscopy confirms the presence and electronic structure of [As(7)](2-). Cyclic voltammetry in DMF solution shows the As(7)(3-)/As(7)(2-) redox couple as a one-electron reversible process. Theoretical investigations explore the bonding and properties of compound 1. 相似文献
The reaction of 1-[(2-bromo)benzene]-3-[(2-carboxymethyl)benzene]triazene and [Pd(CH3CN)4]Cl2 gave a new dinuclear triazenido complex [Pd2L2] 1, which has been characterized by NMR spectra and X-ray crystallography. Electrochemical studies showed that complex 1 is capable of generating hydrogen from acetic acid in CH2Cl2. 相似文献
The five polyhalides [(Ph)(3)PBr][Br(7)], [(Bz)(Ph)(3)P](2)[Br(8)], [(n-Bu)(3)MeN](2)[Br(20)], [C(4)MPyr](2)[Br(20)] ([C(4)MPyr] = N-butyl-N-methylpyrrolidinium), and [(Ph)(3)PCl](2)[Cl(2)I(14)] were prepared by the reaction of dibromine and iodine monochloride in ionic liquids. The compounds [(Ph)(3)PBr][Br(7)] and [(Bz)(Ph)(3)P](2)[Br(8)] contain discrete pyramidal [Br(7)](-) and Z-shaped [Br(8)](2-) polybromide anions. [(n-Bu)(3)MeN](2)[Br(20)] and [C(4)MPyr](2)[Br(20)] exhibit new infinite two- and three-dimensional polybromide networks and contain the highest percentage of dibromine ever observed in a compound. [(Ph)(3)PCl](2)[Cl(2)I(14)] also consists of a three-dimensional network and is the first example of an infinite polyiodine chloride. All compounds were obtained from ionic liquids as the solvent that, on the one hand, guarantees for a high stability against strongly oxidizing Br(2) and ICl and that, on the other hand, reduces the high volatility of the molecular halogens. 相似文献
Heavy Metal π-Complexes. IX. The Chain Polymers [(1,2- (CH3)2C6H4BiCl3)2], [(1,3- (CH3)2C6H4BiCl3)2] and [(1,4- (CH3)2C6H4BiCl3)2] In the crystal structures of the three solid state complexes (C6H4(CH3)2BiCl3 (C6H4(CH3)2 = o-xylene: 1 , m-xylene: 2 , p-xylene: 3 ) quasi-dimeric units of almost undistorted, arene coordinated BiCl3 fragments can be found that are further associated via additional Bi? Cl contacts to form one-dimensional polymeric chains. Whereas the chains of 2 and 3 are constituted by Bi2Cl2 four-membered rings only, further Cl-bridging in 1 leads to additional trigonal-bipyramidal arrangements with Bi atoms exhibiting coordination numbers of 3 + 3 + 1 and 3 + 2 + 1, respectively (prim. + sec. Cl contacts + arene). The arene-metal bonding is characterized by Bi-arene distances in the range from 297 – 306 pm, including ring slippages of 24 –41 pm and 73 pm with the Bi atoms being six and seven coordinated, respectively. The direction of this slipping with respect to the arene's methylation sites cannot be understood in terms of electronic influences but is shown to be caused by steric demands. The values IP1 of the arenes prove to determine the colours of the complexes. 相似文献
C-organostannyl- and organosilyl-derivatives of 2-(thien-2-ylmethyl)thiophene and 1-[(1H-pyrazol-1-yl)methyl]-1H-pyrazole have been synthesised and characterised spectroscopically. Lithiation and subsequent substitution by R3M takes place at the 5,5′ positions for both bis-heterocycles, and this is confirmed by the X-ray structure of 1,1′-[5,5′-(Ph3Sn)C3N2]2CH2. 相似文献
The cluster anion [Fe3(μ3-Se)(CO)9]2- (I) was isolated as a salt (Et4N)2[I] by the reaction of Fe(CO)5 with Na2Se in isopropanol. The protonated form, (μ-H)2Fe3(μ3-Se)(CO)9 (II), was obtained by acidifying the reaction mixture and used for the synthesis of the heterometallic cluster FeMo2(μ3-Se)(CO)7Cp2 (III), CP=η5-C5H5. The structure of I and III was established by X-ray diffraction analysis. Crystals I are monoclinic, a=14.210(3), b=11.547(3), c=19.831(2), Å, β=90.92(2)°, Vcell=3254(1) Å3, space group P2/c, Z=4, dcalc=1.550 g/cm3, Syntex P21, λCuKα, R(F)=0.1333 for 1264 Fhkl>6σ(Fhkl). Crystals III are monoclinic, a=20.440(5), b=12.771(3), c=16.342(4) Å, β=113.80(2)°, Vcell=3903(2) Å3, space group P21/c, Z=8, dcalc=2.222 g/cm3, Syntex P21, λCuKα, R(F)=0.0734 for 1116 Fhkl>4σ(Fhkl). The structure of II was inferred from the Mössbauer, IR, and1H and77Se NMR spectroscopy data. 相似文献
Caged chalcogens : A series of novel, functionalized TnSm cages (T=Ge, Sn; n/m=4:6, 3:4) with terminal COO(H) or COMe groups were synthesized and show further reactivity toward CuI complexes (an example of which is shown here) and to hydrazines. This led to the generation of functionalized Cu/T/S clusters or the formation of Schiff bases at the C?O groups, respectively, with or without further fragmentation of the T/S core.
The interstitial dihydride dianion [Ni12(CO)21H2]2? is readily converted by carbon monoxide (25°C, 1 atm) into a mixture of tetracarbonylnickel and a new colourless hydride carbonyl monoanion, which has been characterized by X-ray diffraction as [Ni2(CO)6H]?. 相似文献