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1.
Reactions of iron(II) and iron(III) salts with tri-p-tolylarsine oxide(L) in suitable organic solvents yield complexes of formulas: (i) [FeL2Cl2(OH2)2] [FeCl4].2H2O, [FeL2Br2] [FeBr4].2H2O; (ii) [Fe(NCS)3L2].H2O; (iii) [FeL(O2ClO2)2(OH2)] (ClO4).0.25C6H6; (iv) [FeL3I] [FeI3].H2O and (v) [Fe(CO)3LI]I. Characterization has been done through elemental analyses, IR, far IR, ESR, and reflectance spectra, molar conductance, magnetic moments, t.g.a. and X-ray diffraction (powder) data. The species [FeL2Cl2(OH2)2]+, [FeL2Br2]+, [Fe(NCS)3L2], [FeL(O2ClO2)2OH2]+, [FeL3I]+ and [Fe(CO)3LI]+ have been assigned trans-octahedral, trans-square planar, trans-trigonal bipyramid, trans-octahedral, tetrahedral and cis-trigonal bipyramid structures respectively. 相似文献
2.
Luca Demonti Dr. Nathalie Saffon-Merceron Dr. Nicolas Mézailles Dr. Noel Nebra 《Chemistry (Weinheim an der Bergstrasse, Germany)》2021,27(62):15396-15405
In ample variety of transformations, the presence of silver as an additive or co-catalyst is believed to be innocuous for the efficiency of the operating metal catalyst. Even though Ag additives are required often as coupling partners, oxidants or halide scavengers, its role as a catalytically competent species is widely neglected in cross-coupling reactions. Most likely, this is due to the erroneously assumed incapacity of Ag to undergo 2e− redox steps. Definite proof is herein provided for the required elementary steps to accomplish the oxidative trifluoromethylation of arenes through AgI/AgIII redox catalysis (i. e. CEL coupling), namely: i) easy AgI/AgIII 2e− oxidation mediated by air; ii) bpy/phen ligation to AgIII; iii) boron-to-AgIII aryl transfer; and iv) ulterior reductive elimination of benzotrifluorides from an [aryl-AgIII-CF3] fragment. More precisely, an ultimate entry and full characterization of organosilver(III) compounds [K]+[AgIII(CF3)4]− ( K-1 ), [(bpy)AgIII(CF3)3] ( 2 ) and [(phen)AgIII(CF3)3] ( 3 ), is described. The utility of 3 in cross-coupling has been showcased unambiguously, and a large variety of arylboron compounds was trifluoromethylated via [AgIII(aryl)(CF3)3]− intermediates. This work breaks with old stereotypes and misconceptions regarding the inability of Ag to undergo cross-coupling by itself. 相似文献
3.
《Polyhedron》2003,22(14-17):2375-2380
Iron (II), cobalt (II) and nickel (II) complexes of 2,6-bis(pyrazol-3-yl)pyridine (bpp) with [Cr(C2O4)3]3− have been prepared. They were characterised by single-crystal X-ray diffraction, magnetic susceptibility measurements and thermal gravimetric analyses. All three compounds are isostructural and they are formed by isolated [MII(bpp)2]2+ and [Cr(C2O4)3]3− complexes and free ClO4 −. As expected, only the salt [Fe(bpp)2]2[Cr(C2O4)3]ClO4·5H2O shows a thermal spin transition with transition temperature (T1/2) around 375 K that is correlated to the loss of water molecules. 相似文献
4.
《Journal of organometallic chemistry》2007,692(1-3):257-262
The redox reaction of bis(2-benzamidophenyl) disulfide (H2L-LH2) with [Pd(PPh3)4] in a 1:1 ratio gave mononuclear and dinuclear palladium(II) complexes with 2-benzamidobenzenethiolate (H2L−), [Pd(H2L-S)2(PPh3)2] (1) and [Pd2(H2L-S)2 (μ-H2L-S)2(PPh3)2] (2). A similar reaction with [Pt(PPh3)4] produced only the corresponding mononuclear platinum(II) complex, [Pt(H2L-S)2(PPh3)2] (3). Treatment of these complexes with KOH led to the formation of cyclometallated palladium(II) and platinum(II) complexes, [Pd(L-C,N,S)(PPh3)]− ([4]−) and [Pt(L-C,N,S) (PPh3)]− ([5]−). The molecular structures of 2, 3 and [4]− were determined by X-ray crystallography. 相似文献
5.
Monomeric and Polymeric Dimethylaminothiosquarato Complexes: The Crystal Structures of Nickel(II), Cobalt(II), Silver(I), Platinum(II), Gold(I), Mercury(II) and Lead(II) Dimethylaminothiosquarates The ligand 2‐dimethylamino‐3, 4‐dioxo‐cyclobut‐1‐en‐thiolate, Me2N‐C4O2S− (L) forms neutral and anionic complexes with nickel(II), cobalt(II)‐, silver(I)‐, platinum(II)‐, gold(I)‐, mercury(II)‐ and lead(II). According to the crystal structures of seven complexes the ligand is O, S‐chelating in [Ni(L)2(H2O)2]·2 H2O, [Co(L)2(CH3OH)2] and (with limitations) in [Pb(L)2·DMF]. In the remaining compounds the ligand behaves essentially as a thiolate ligand. The platinum, gold and mercury complexes [TMA]2[Pt(L)4], [TMA] [Au(L)2] and [Hg(L)2] are monomeric. In [TMA][Ag2(L)3]·5.5 H2O a chain‐like structure was found. In the asymmetric unit of this structure eight silver ions, with mutual distances in the range 2.8949(4) to 3.1660(3)Å, are coordinated by twelve thiosquarato ligands. [Pb(L)2·DMF] has also a polymeric structure. It contains a core of edge‐bridged, irregular PbS4 polyhedra. TMA[Au(H2NC4O2S)2] has also been prepared and its structure elucidated. 相似文献
6.
Glenna So Ming Tong Dr. Steven Chi Fai Kui Dr. Hsiu‐Yi Chao Dr. Nianyong Zhu Dr. Chi‐Ming Che Prof. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2009,15(41):10777-10789
The complexes [Au3(dcmp)2][X]3 {dcmp=bis(dicyclohexylphosphinomethyl)cyclohexylphosphine; X=Cl? ( 1 ), ClO4? ( 2 ), OTf? ( 3 ), PF6? ( 4 ), SCN?( 5 )}, [Ag3(dcmp)2][ClO4]3 ( 6 ), and [Ag3(dcmp)2Cl2][ClO4] ( 7 ) were prepared and their structures were determined by X‐ray crystallography. Complexes 2 – 4 display a high‐energy emission band with λmax at 442–452 nm, whereas 1 and 5 display a low‐energy emission with λmax at 558–634 nm in both solid state and in dichloromethane at 298 K. The former is assigned to the 3[5dσ*6pσ] excited state of [Au3(dcmp)2]3+, whereas the latter is attributed to an exciplex formed between the 3[5dσ*6pσ] excited state of [Au3(dcmp)2]3+ and the counterions. In solid state, complex [Ag3(dcmp)2][ClO4]3 ( 6 ) displays an intense emission band at 375 nm with a Stokes shift of ≈7200 cm?1 from the 1[4dσ*→5pσ] absorption band at 295 nm. The 375 nm emission band is assigned to the emission directly from the 3[4dσ*5pσ] excited state of 6 . Density functional theory (DFT) calculations revealed that the absorption and emission energies are inversely proportional to the number of metal ions (n) in polynuclear AuI and AgI linear chain complexes without close metal???anion contacts. The emission energies are extrapolated to be 715 and 446 nm for the infinite linear AuI and AgI chains, respectively, at metal???metal distances of about 2.93–3.02 Å. A QM/MM calculation on the model [Au3(dcmp)2Cl2]+ system, with Au???Cl contacts of 2.90–3.10 Å, gave optimized Au???Au distances of 2.99–3.11 Å in its lowest triplet excited state and the emission energies were calculated to be at approximately 600–690 nm, which are assigned to a three‐coordinate AuI site with its spectroscopic properties affected by AuI???AuI interactions. 相似文献
7.
Summary Anionic complexes [UO2(1, 1-dithiolate)2]2– interact strongly with transition metal ions to yield a new class of dithiolato-bridged heterobimetallic complexes MUO2(1, 1-dithiolate)2 (M=CoII, NiII, CuII, ZnII or PbII, 1, 1-dithiolate = isomaleonitrile dithiolate (i-MNT2–) and trithiocarbonate (CS
3
2–
)). (Et4N)2[UO2(i-MNT)2] and (Et4N)2[UO2(CS3)2] have also been prepared. The complexes have been characterized by elemental analysis, i.r., u.v.-vis. and e.s.r. spectral studies. The heterobimetallic complexes are non-electrolytic, whereas (Et4N)2-[UO2 (i-MNT)2] and (Et4N)2[UO2(CS3)2] are 21 electrolytes. The i.r. data indicate symmetrical bidentate bridging behaviour for the dithiolate ligands. Magnetic moments, electronic spectra and e.s.r. studies are commensurate with a square planar environment around CoII, NiII and CuII. 相似文献
8.
Jan Ellermeier Ralph Sthler Wolfgang Bensch 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m70-m73
Both title compounds, bis[tris(2‐aminoethyl)amine]nickel(II) dichloride, [Ni(tren)2]Cl2, (I), and bis[tris(2‐aminoethyl)amine]nickel(II) tetrathiotungstate, [Ni(tren)2]WS4, (II), contain the [Ni(tren)2]2+ cation [tren is tris(2‐aminoethyl)amine, C6H18N4]. The tren molecule acts as a tridentate ligand around the central Ni atom, with the remaining primary amine group not bound to the central atom. In (I), Ni2+ is located on a centre of inversion surrounded by one crystallographically independent tren molecule. In the [Ni(tren)2]2+ cation of (II), the Ni atom is bound to two crystallographically independent tren molecules. The Ni atoms in the [Ni(tren)2]2+ complexes are in a distorted octahedral environment consisting of six N atoms from the chelating tren molecules. The counter‐ions are chloride anions in (I) and the tetrahedral [WS4]2? anion in (II). Hydrogen bonding is observed in both compounds. 相似文献
9.
《Polyhedron》1999,18(26):3527-3531
The redox reaction between [Pt(NH3)4]2+ and [W(CN)8]3− in the presence of Cl− anions in aqueous solution affords single crystals of [PtII(NH3)4]2[WIV(CN)8] and [PtIV(NH3)4Cl2]Cl2. Trapped cyano ligands of [W(CN)8]4− rectangular antiprisms of D2 point symmetry between parallel Pt(II) square planes show that the inner-sphere redox pathway is prohibited. The presence of Cl− counterions enables the formation of [Pt(NH3)4Cl2]Cl2 as the product of the rare outer-sphere pathway of the oxidation of Pt(II) by [W(CN)8]3−. 相似文献
10.
Theoretical studies on ferromagnetic behavior of [Cr(C5(CH3)5)2]+[TCNE]− and [Mn(C5(CH3)5)2]+[TCNQ]−
《Polyhedron》2007,26(9-11):2135-2141
By using broken-symmetry hybrid-DFT (UB3LYP and UB2LYP) calculation, the effective exchange integrals (J values) of [Cr(C5(CH3)5)2]+[TCNE]−[Cr(C5(CH3)5)2]+ and [Mn(C5(CH3)5)2]+[TCNQ]−[Mn(C5(CH3)5)2]+ were determined theoretically. Those calculated models were reduced to 3-spin-sites models from X-ray crystallographic data of charge transfer 3D crystal. The calculated results showed that effective exchange integrals were positive and the signs of spin densities on the cyclopentadienyl rings were negative. These results supported the so-called McConnell I mechanism for ferromagnetism proposed by Kollmar et al. and our previous calculations. Natural orbital analysis made it clear that the orbital overlap between SOMO on metals and SOMO on TCNE or TCNQ cations was nearly zero. These results indicated that orbital orthogonality was an important key factor for explaining the ferromagnetism of those systems. 相似文献
11.
《Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy》1989,45(8):809-819
The new complexes K2[Ni(Hheo)2], K2[Cu(Hheo)2]·H2O, K2[Ni(Hhpo)2]·H2O, K2[M(Hhpo)2]·0.5H2O (M = Cu, Pd) and K2[Cu2(hpo)2·0.5H2O, where H3heo = N-(2-hydroxyethyl)oxamide and H3hpo = N-(3-hydroxypropyl)oxamide, have been prepared. Several synthetic routes were investigated and the complexes were characterized by analyses, conductivity measurements, thermogravimetry, magnetic susceptibility and spectroscopy (i.r. and far i.r., diffuse reflectance u.v.). Monomeric square planar structures are found for the [M(Hheo)2]2− and [M(Hhpo)2]2− complex anions, while the hpo3− Cu(II) complex appears to be a square planar dimer. The doubly deprotonated Hheo2− and Hhpo2− ions exhibit a bidentate N(secondary amide), N′(tertiary amide)-coordination with the OH-group remaining uncoordinated, while the triply deprotonated hpo3− ion behaves as a bridging N(secondary amide), N′(tertiary amide), O(deprotonated) ligand, while two Cu(II) centres are bridged by two alkoxide-O atoms. The vibrational analysis of the dehydrated complexes is carried out, using NH/ND, OH/OD, 58Ni/62Ni and 63Cu/65Cu substitutions. 相似文献
12.
The oxidation of ethylenediamine by diperiodatoargentate (III) ion has been studied by stopped‐flow spectrophotometry. Kinetics of this reaction involves two steps. The first step is the complexation of silver (III) with the substrate and is over in about 10 ms. This is followed by a redox reaction in the second step that occurs intramolecularly from the substrate to the silver (III) center. The rate of reduction of silver (III) species by ethylenediamine, ethanolamine, and 1,2‐ethanediol were observed to be 1.2 × 104, 1.1 × 102, and 0.14 dm3 mol−1 s−1, respectively, at 20°C. The reaction rate shows an inverse dependence on [IO] and [OH−] in the low concentration range (≤1 × 10‐3 mol dm−3). At higher [OH−] (>1 × 10−3 mol dm−3) the rate of reaction starts increasing and attains a limiting value at very high [OH−]. The rate of deamination of ethylenediamine is enhanced by its complexation with silver (III). The involvement of [AgIII(H2IO6) (H2O)2] and [AgIII(H2IO6) (OH)2]2− are suggested as the reactive silver (III) species kinetically in mild basic and basic conditions, respectively. © 2000 John Wiley & Sons, Inc. Int J Chem Kinet 32: 286–293, 2000 相似文献
13.
The preparation and x-ray structure of [P(C2H5)4]+[N3]− and the attempted preparation of [PH4]+[N3]−
Thomas M. Klaptke Axel Schulz Peter S. White Margaret J. Crawford 《Heteroatom Chemistry》1998,9(2):129-132
Tetraethylphosphonium azide, [P(C2H5)4 ]+[N3 ]−, was prepared from tetraethyl phosphonium bromide and silver azide. Single crystals of [P(C2H5)4 ]+[N3 ]− were grown from dichloromethane/THF (10:1) solution. The structure was determined by single-crystal X-ray diffraction analysis. [P(C2H5)4 ]+[N3 ]− crystallizes in the monoclinic space group C 2/c with Z = 4 and unit cell dimensions a = 12.961(6), b = 6.835(3), c = 12.378(6) Å, and β = 100.57(4)°. The attempted preparation of phosphonium azide [PH4]+[N3]− from phosphonium iodide and silver azide lead instead to the formation of PH3 and HN3. The instability of [PH4]+[N3]− with respect to PH3 and HN3 is in accord with thermodynamic considerations according to which the reaction PH3(g) and HN3(g) to yield [PH4 ]+[N3 ]− is thermodynamically unfavorable. (Non SI units employed: kcal ≈ 4.184 J, Å = 10−10 m.) © 1998 John Wiley & Sons, Inc. Heteroatom Chem 9:129–132, 1998 相似文献
14.
Sabrina H. J. De Beukeleer Herman O. Desseyn Spyros P. Perlepes 《Transition Metal Chemistry》1994,19(5):542-547
Summary The new complexes K2[Ni(H2heo)2]·3H2O, K2[Pd-(H2heo)2], K2[Cu(heo)]·3H2O and [Cu2(heo)·2H2O] {heo = [(CONCH2CH2O)2]4-} were prepared and characterized by chemical analyses, conductivity measurements, thermogravimetry, magnetic susceptibility and i.r. and u.v. spectroscopy.Monomeric square planar structures with MN4 coordination spheres are found for the nickel and palladium complex anions.For copper, two different complexes were identified. In slightly alkaline media, a green insoluble nonelectrolyte [Cu2(heo)·2H2O] was prepared; the two copper(II) centres are bridged by the tetra-deprotonated ligand in a trans-planar configuration with the H2O molecules strongly coordinated to the copper(II). The copper(II) monomer has been prepared in strong alkaline media, this anion also contains the tetra-deprotonated ligand in a planar trans form. 相似文献
15.
《Polyhedron》1987,6(5):855-861
The crystal structures of three copper(II) complexes with phenoxyisobutyric acid (PIBAH) and p-chlorophenoxyisobutyric acid (PCIBAH) have been determined by X-ray diffraction. Tetra-μ-[2-methyl-2-(4-chlorophenoxy)-propanoato-O,O′]-bis[2-amino-pyrimidine)copper(II)], [Cu2(PCIBA)4(2-aminopyrimidine)2]2 (1) is a centrosymmetric tetracar☐ylate bridged dimer [Cu⋯Cu, 2.689(2)Å] with the nitrogens of the 2-aminopyrimidine molecules occupying the axial positions [CuN, 2.198(7)Å]. Tetraaquacopper(II) tri-μ-[2-methyl-2-phenoxypropanoato-O,O′]-bis[(2-methyl-2-phenoxypropanoato(copper(II)], [Cu(H2O)4]2+] {[Cu2(PIBA)5]−}2, (2), is a disordered precursor of the stable structure (3), [Cu(H2O)5]2+ {[Cu2(PIBA)5]−·4H2O, consisting of centrosymmetric square planar [Cu(H2O)4]2+ cations and tris(car☐ylate)-bridged dimer anions [Cu⋯Cu, 2.85(1)Å] (2). The fourth position of each square planar dimer ‘end’ is occupied by a car☐ylate oxygen of a PIBA molecule which also provides the ether oxygen capping each axial dimer site [CuO, 2.15(4), 2.19(5)Å]. This completes a five-membered chelate ring. A symmetrical array of eight hydrogen bonds link the four waters of the [Cu(H2O)4]2+ cation to the car☐yl oxygens of both the capping PIBA ligands of the two dimeric anions. Structure (3) has essentially identical [Cu2(PIBA)5]− dimer anions [Cu⋯Cu, 2.929(1)Å] and hydrogen-bonding interactions with the tetraaquacopper(II) cations. However, water molecules partially occupy the octahedral sites of these cations [CuO, 2.46(1)Å], as well as a number of lattice sites in the crystal. 相似文献
16.
Yu-Jie Zhong Jian-Hong Liao Tzu-Hao Chiu Yuh-Sheng Wen C. W. Liu 《Molecules (Basel, Switzerland)》2021,26(17)
A decanuclear silver chalcogenide cluster, [Ag10(Se){Se2P(OiPr)2}8] (2) was isolated from a hydride-encapsulated silver diisopropyl diselenophosphates, [Ag7(H){Se2P(OiPr)2}6], under thermal condition. The time-dependent NMR spectroscopy showed that 2 was generated at the first three hours and the hydrido silver cluster was completely consumed after thirty-six hours. This method illustrated as cluster-to-cluster transformations can be applied to prepare selenide-centered decanuclear bimetallic clusters, [CuxAg10-x(Se){Se2P(OiPr)2}8] (x = 0–7, 3), via heating [CuxAg7−x(H){Se2P(OiPr)2}6] (x = 1–6) at 60 °C. Compositions of 3 were accurately confirmed by the ESI mass spectrometry. While the crystal 2 revealed two un-identical [Ag10(Se){Se2P(OiPr)2}8] structures in the asymmetric unit, a co-crystal of [Cu3Ag7(Se){Se2P(OiPr)2}8]0.6[Cu4Ag6(Se){Se2P(OiPr)2}8]0.4 ([3a]0.6[3b]0.4) was eventually characterized by single-crystal X-ray diffraction. Even though compositions of 2, [3a]0.6[3b]0.4 and the previous published [Ag10(Se){Se2P(OEt)2}8] (1) are quite similar (10 metals, 1 Se2−, 8 ligands), their metal core arrangements are completely different. These results show that different synthetic methods by using different starting reagents can affect the structure of the resulting products, leading to polymorphism. 相似文献
17.
《Journal of Inorganic and Nuclear Chemistry》1981,43(10):2511-2515
The hydrolysis and chlorocomplex formation of Po(IV) was investigated through solvent extraction with dithizone-carbon tetrachloride solutions. In a 1.0 M (H,Na)Cl solution, a tracer concentration of Po(IV) (about 10−12 M) was found to exist as; Po(OH)2Cl42−, Po(OH)2Cl3.71.7−, Po(OH)2Cl3.51.5−, Po(OH)2.1Cl2.0− and Po(OH)4 for −log[H+] = 0, 1, 2, 3 and 6, respectively. The constants of successive hydrolysis, β1 = [Po(OH)3Cln1−n][Po(OH4]−1[H+]−1[Cl−1]−n and β2 = [Po(OH)2Cln2−n][Po(OH)4]−1[H+]−2[Cl−]−n were calculated from the distribution ratios obtained, giving the results; log β1 = 4.6 ± 0.3 and log β2 = 8.7 ± 0.3. The chemical composition of extracted species was probably PoCl2(HDz)2, Po(OH)Cl(HDz)2 and Po(OH)2(HDz)2. 相似文献
18.
Harald Krautscheid Stefan Gerber 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(7):781-783
The anions of the title compounds contain [Ag(SCN)4] units, with the S atoms coordinating to Ag+ in a tetrahedral arrangement. Whereas in the isolated anions of tripotassium tetrathiocyanatoargentate(I), K3[Ag(SCN)4], (I), all SCN? groups are bonded as terminal ligands, in tetrapotassium di‐μ‐thiocyanato‐S:S‐bis[dithiocyanatoargentate(I)], K4[Ag2(SCN)6], (II), two AgS4 tetrahedra share one common edge. In poly[potassium [argentate(I)‐di‐μ‐thiocyanato‐S:S]], K[Ag(SCN)2], (III), edge‐ and vertex‐sharing of AgS4 tetrahedra results in infinite [Ag(SCN)2]? layers. 相似文献
19.
《Journal of Inorganic and Nuclear Chemistry》1981,43(4):753-755
The kinetics of the Fe(II) reduction of trans-chloro, bromo and iodopyridinebis(dimethylglyoximato)Co(III) have been studied at 30.0±0.1°C and I = 1.0 mol. dm−3(NaClO4) in the [H+] range 0.0043–0.115 mol. dm−3. The reaction showed an inverse dependence on [H+]. The second order rate constant could be expressed in the form kII = k1 + k2(1 + KB[H+])−1. The kinetic data were found to be: Co(DH)2(py)Cl−k1 = 0.051 ±0.003 dm3 mol−1s−1, 0.051±0.003 dm3 mol−1 s−1,k2 = 0.76±0.04 dm3 mol−1 s−1 KB = 325±8 dm3 mol−1;Co(DH)2(py)Br-k1 = 0.071±0.004 dm3mol−1 s−1,k2 = 1.21±0.04 dm3 mol−1 s−1 KB = 460±15 dm3 mol−1; Co(DH)2(py)I-k1 = 0.075±0.006 dm3 mol−1 s−1,k2 = 1.91±0.09 dm3 mol−1 s−1 KB = 625±30 dm3 mol−1. The inverse dependence on [H+] suggests an inner-sphere mechanism involving protonated and unprotonated species of the complex. The order of rates for the three complexes was found to be Co(DH)2(py)I > Co(DH)2(py)Br > Co(DH)2(py)Cl. 相似文献
20.
《Polyhedron》1988,7(5):379-383
RhCl3·3H2O reacted with Na2dmit (dmit2−; 1,3-dithiole-2-thione-4,5-dithiolate anion) and [NBu4nOH in methanol to afford [NBu4n][Rh(dmit)2] (1) and [NBu4n]1.5[Rh(dmit)2] (2). Salt 1 was oxidized electrochemically in acetonitrile to afford [NBu4n]0.4[Rh(dmit)2] (3). Suspended powders of 1 or 2 reacted with iodine in hexane to afford [NBu4n][Rh(dmit)2][I3]1.3 (4) or [NBu4n]1.5[Rh(dmit)2[I3]0.4 (5). On the other hand, 1 dissolved in acetonitrile, reacted with bromine and iodine to yield [NBu4n]0.25[Rh(dmit)2Br] (6) and [NBu4n]0.35[Rh(dmit)2I] (7), respectively. All the salts behave as semi-conductors with electrical conductivities of 1 x (10−5 − 10−8) S cm−1 at 25°C measured for compacted pellets. Electronic absorption, ESR and X-ray photoelectron spectra of the salts are discussed. 相似文献