首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 17 毫秒
1.
The thiocarbamates 4-RC6H4NHC(S)NR2′ (R = H, Cl; R′ = Me, Et), 4-ClC6H4NHC(S)NR (NR = 2-pyridylpiperazine) react with cis-[PtCl2(PTA)2] (PTA = 1,3,5-triaza-7-phosphaadamantane) in the presence of base to afford the monocationic platinum(II) complexes cis-[Pt{SC(NR2′) = NC6H4R}(PTA)2]+ (R = H, Cl; R′ = Me, Et), cis-[Pt{SC(NR) = NC6H4Cl}(PTA)2]+ (NR = 2-pyridylpiperazine), which were isolated as their PF6 salts in high yields. The complexes were fully characterised spectroscopically and also by X-ray crystallography. Cytotoxicity of these complexes was studied in vitro in three human cancer cell lines (CH1, A549 and SW480) using the MTT assay.  相似文献   

2.
A variety of platinum(II) complexes of methimazole (2-mercapto-1-methylimidazole; HImS = neutral form and ImS = thiolate form), coordinated in both thione and thiolate forms, have been isolated by reacting methimazole with [PtCl(terpy)]Cl (terpy = 2,2′:6′,2″ terpyridine), [PtCl2(bipy)] (bipy = bipyridine), [PtCl2(o-phen)] (o-phen = o-phenanthroline), [PtCl2(CH3CN)2] and [PtCl2(COD)] (COD = 1,5-cyclooctadiene). These complexes were characterized by electronic absorption, IR and NMR (1H, 13C, 195Pt) spectroscopies. Molecular structure of [Pt(bipy)(HImS)2]Cl2·3H2O (3a·3H2O) has been established by single crystal X-ray crystallography. Platinum thiolate complex, [Pt(ImS)2(HImS)2] (5), could be obtained by treatment of [Pt(HImS)4]Cl2 with sodium methoxide in methanol. The solution of 5 in organic solvents yielded bi- and tri-nuclear platinum complexes. The effect of diimine ligands on oxidation of methimazole moiety in the complexes has been studied by electrochemical oxidation and pulse radiolytic oxidation employing specific one-electron oxidant, radical.  相似文献   

3.
New C-ansa-zirconocene complexes containing methoxythiophenolate and mercaptophenolate ligands have been synthesized and characterized. The reaction of (HSC6H4-n-OMe) (n = 2, 3 or 4) with [Zr{(t-Bu)HC(η5-C5Me4)(η5-C5H4)}Me2] (1) led to the formation of monosubstituted complexes [Zr{(t-Bu)HC(η5-C5Me4)(η5-C5H4)}Me(κ,S-SC6H4-n-OMe)] (= 2 (2); = 3 (3)) and the disubstituted complex [Zr{(t-Bu)HC(η5-C5Me4)(η5-C5H4)}(κ,S-SC6H4-4-OMe)2] (4). The complexes [Zr{(R)HC(η5-C5Me4)(η5-C5H4)}(κ,O-OC6H4-4-SH)2] (R = t-Bu (6); R = CH2CHCH2 (7)) and [Zr(η5-C5H4)2(OC6H4-n-SH)2] (= 3 (9); = 4 (10)) have been synthesized using the corresponding dimethyl zirconocene and mercaptophenol. However, the reaction of [Zr{(t-Bu)HC(η5-C5Me4)(η5-C5H4)}Cl2] (11) with 4-mercaptophenol in the presence of NEt3 led to the formation of the first example of a homoleptic six-coordinate mercaptophenolate complex of zirconium, namely [HNEt3]2[Zr(κ,O-OC6H4-4-SH)6] (12). Complex 12 can be obtained in higher yield by the reaction of ZrCl4 with six equivalents of 4-mercaptophenol and NEt3. The reaction of 12 with [Zr(η5-C5H4)2Cl2] gave the unexpected disubstituted complex [Zr(η5-C5H4)2(OC6H4-4-SH)2] (10). The molecular structures of 4 and 12 have been determined by single-crystal X-ray diffraction studies.  相似文献   

4.
Crystallisation of simple cyanoruthenate complex anions [Ru(NN)(CN)4]2− (NN = 2,2′-bipyridine or 1,10-phenanthroline) in the presence of Lewis-acidic cations such as Ln(III) or guanidinium cations results, in addition to the expected [Ru(NN)(CN)4]2− salts, in the formation of small amounts of salts of the dinuclear species [Ru2(NN)2(CN)7]3−. These cyanide-bridged anions have arisen from the combination of two monomer units [Ru(NN)(CN)4]2− following the loss of one cyanide, presumably as HCN. The crystal structures of [Nd(H2O)5.5][Ru2(bipy)2(CN)7] · 11H2O and [Pr(H2O)6][Ru2(phen)2(CN)7] · 9H2O show that the cyanoruthenate anions form Ru-CN-Ln bridges to the Ln(III) cations, resulting in infinite coordination polymers consisting of fused Ru2Ln2(μ-CN)4 squares and Ru4Ln2(μ-CN)6 hexagons, which alternate to form a one-dimensional chain. In [CH6N3]3[Ru2(bipy)2(CN)7] · 2H2O in contrast the discrete complex anions are involved in an extensive network of hydrogen-bonding involving terminal cyanide ligands, water molecules, and guanidinium cations. In the [Ru2(NN)2(CN)7]3− anions themselves the two NN ligands are approximately eclipsed, lying on the same side of the central Ru-CN-Ru axis, such that their peripheries are in close contact. Consequently, when NN = 4,4′-tBu2-2,2′-bipyridine the steric bulk of the t-butyl groups prevents the formation of the dinuclear anions, and the only product is the simple salt of the monomer, [CH6N3]2[Ru(tBu2bipy)(CN)4] · 2H2O. We demonstrated by electrospray mass spectrometry that the dinuclear by-product [Ru2(phen)2(CN)7]3− could be formed in significant amounts during the synthesis of monomeric [Ru(phen)(CN)4]2− if the reaction time was too long or the medium too acidic. In the solid state the luminescence properties of [Ru2(bipy)2(CN)7]3− (as its guanidinium salt) are comparable to those of monomeric [Ru(bipy)(CN)4]2−, with a 3MLCT emission at 581 nm.  相似文献   

5.
The organometallic tin(IV) complexes [SnPh2(SRF)2] SRF = SC6F4-4-H (1), SC6F5 (2), were synthesized and their reactivity with [MCl2(PPh3)2] M = Ni, Pd and Pt explored. Thus, transmetallation products were obtained affording polymeric [Ni(SRF)(μ-SRF)]n, monomeric cis-[Pt(PPh3)2(SC6F4-4-H)2] (3) and cis-[Pt(PPh3)2(SC6F5)2] (4) and dimeric species [Pd(PPh3)(SC6F4-4-H)(μ-SC6F4-4-H)]2 (5) and [Pd(PPh3)(SC6F5)(μ-SC6F5)]2 (6) for Ni, Pt and Pd, respectively. The crystal structures of complexes 1, 2, 3, 4 and 6 were determined.  相似文献   

6.
The thiocarbamate esters 4-RC6H4NHC(S)OMe (R = H, Cl, OMe, NO2, Me) react with cis-[PtCl2(PTA)2] (PTA = 1,3,5-triaza-7-phosphaadamantane) in the presence of base to afford the platinum(II) complexes trans-[Pt{SC(OMe)NC6H4R}2(PTA)2] (R = H, Cl, OMe, NO2, Me) in high yields. The complexes were fully characterised spectroscopically and, in case of the NO2 derivate, by X-ray crystallography. Cytotoxicity of these complexes was studied in vitro in four human cancer cell lines (CH1, HT29, A549, SK-OV-3) using the MTT assay. The results show that the Cl substituted derivate is the most potent of these compounds in vitro. Moreover, this derivative is capable of partially circumventing primary cisplatin resistance in ovarian and colon carcinoma cells.  相似文献   

7.
The new aryl phosphinites PPh2OR (R = 2,4,6-Me3C6H2, 1; R = 2,6-Ph2C6H3, 2) have been prepared from chlorodiphenylphosphine and the corresponding phenols. In these ligands, the ortho-positions of the aromatic phosphite function are blocked by methyl and phenyl substituents, which allows coordination to metal centres without ortho-metallation. Thus, reaction with [PdCl2(cod)] leads to the complexes trans-[PdCl2(PPh2OR)2] (R = 2,4,6-Me3C6H2, 3; R = 2,6-Ph2C6H3, 4), while the reaction with [Rh2(CO)4Cl2] gives trans-[Rh(CO)Cl(PPh2OR)2] (R = 2,4,6-Me3C6H2, 5; R = 2,6-Ph2C6H3, 6). The single-crystal X-ray structure analyses of 3 and 5 confirm the trans-coordination of the new ligands in these square-planar complexes.  相似文献   

8.
New diruthenium complexes (PPN)4[(NC)4Ru(μ-bptz)Ru(CN)4], (PPN)41, and [(bpy)2Ru(μ-bptz)Ru(CN)4], 2, (PPN+ = bis(triphenylphospine)iminium; bptz = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine; bpy = 2,2′-bipyridine), were synthesised and characterised by spectroscopic and electrochemical techniques. The comproportionation constant Kc = 107.0 of the mixed-valent species [(NC)4Ru(μ-bptz)Ru(CN)4]3− as obtained by oxidation of 14 in CH3CN is much lower than the Kc = 1015.0 previously detected for [(H3N)4Ru(bptz)Ru(NH3)4]5+, reflecting the competition between CN and bptz for the π-electron density of the metals. Comparison with several other bptz-bridged diruthenium(II,III) complexes reveals an approximate correlation between Kc and the diminishing effective π acceptor capacity of the ancillary terminal ligands. In addition to the intense MLCT absorption at λmax = 624 nm, the main IVCT (intervalence charge transfer) band of 13− was detected by spectroelectrochemistry at λmax = 1695 nm (in CH3CN; ε = 3200 M−1 cm−1). The experimental band width at half-height, Δν1/2 = 2700 cm−1, is slightly smaller than the theoretical value Δν1/2 = 3660 cm−1, calculated from the Hush approximation for Class II mixed-valent species. In agreement with comparatively moderate metal-metal coupling, the mixed-valent intermediate 13− was found to be EPR silent even at 4 K. The unsymmetrical mixed-valent complex [(bpy)2RuII(μ-bptz)RuIII(CN)4]+, obtained in situ by bromine oxidation of 2 in CH3CN/H2O, displays a broad NIR absorption originating from an IVCT transition at λmax = 1075 nm (ε ≈ 1000 M−1 cm−1, Δν1/2 ≈ 4000 cm−1). In addition, the lifetime of the excited-state of the mononuclear precursor complex [Ru(bptz)(CN)4]2− was measured in H2O by laser flash photolysis; the obtained value of τ = 19.6 ns reveals that bptz induces a metal-to-ligand electronic delocalisation effect intermediate between that induced by bpy and bpz (bpz = 2,2′-bipyrazine) in analogous tetracyanoruthenium complexes.  相似文献   

9.
The ditopic tris(2-mercaptoimidazol-1-yl)borate ligand K2[(mtEt)3B-B(mtEt)3] cannot be prepared from B2(NMe2)4/4 HmtEt/2 KmtEt, because the stable intramolecular diadduct (mtEt)B(μ-mtEt)2B(mtEt) is generated instead (HmtEt = 2-mercapto-1-ethylimidazole). Introduction of a meta- or para-phenylene spacer between the two boron atoms precludes the 2-mercaptoimidazol-1-yl groups from adopting a bridging position so that the potassium salts K2[(mtEt)3B-(m-C6H4)-B(mtEt)3] and K2[(mtEt)3B-(p-C6H4)-B(mtEt)3] become readily accessible. These ligands react with [(p-cym)RuCl2]2 to give the dinuclear RuII complexes [(p-cym)Ru(mtEt)3B-(m-C6H4)-B(mtEt)3Ru(p-cym)]Cl2 and [(p-cym)Ru(mtEt)3B-(p-C6H4)-B(mtEt)3Ru(p-cym)]Cl2 (p-cym = p-cymene). After the exchange of the Cl counterions for [PF6], both complexes have been crystallized and structurally characterized by X-ray diffraction.  相似文献   

10.
The octanuclear cyano-bridged cluster [(Tp)8Fe4Ni4(CN)12] · H2O · 24CH3CN (1) (Tp = hydrotris(1-pyrazolyl)borate) showing magnetic properties of single-molecule magnet has been synthesized by reaction of [fac-Fe(Tp)(CN)3] with {(Tp)Ni(NO3)} species formed from an equimolar reaction mixture of Ni(NO3)2 · 6H2O and KTp in MeCN. The X-ray analysis of 1 shows molecular cube structure in which FeIII and NiII ions reside in alternate corners. The average intramolecular Fe?Ni distance is 5.124 Å. Out-of-phase ac susceptibility and reduce magnetization measurements show that 1 is a single molecule magnet with ground spin state S = 6 and spin reversal energy barrier U = 14 K. Magnetic hysteresis loops were also observed by applying fast sweeping field.  相似文献   

11.
Platinum(II) and platinum(IV) complexes with 3-amino-5-methyl-5-(4-pyridyl)-2,4-imidazolidenedione (L) with general formulaе cis-[PtL2X2nH2O and [PtL2Cl4], where X = Cl, Br, I and n = 2-4) were synthesized. The novel compounds were fully characterized by elemental analysis, IR, 1H, 13C, 195Pt NMR spectra, thermal analysis and molar conductivity. The geometry of Pt(II) complexes and of the organic ligand in the gas phase were optimized using the hybrid DFT method B3LYP with LANL2DZ and 6-31G** basis sets. Some physicochemical parameters as dipole moment, HOMO, LUMO energies and ESP charges were calculated. The comparison of the bond length and angles, obtained from the X-ray analysis and DFT calculations is realized. The cytotoxic effects of these complexes in human T-cell leukemia KE-37 (SKW-3) are reported.  相似文献   

12.
One-pot reaction between MnCl2·4H2O, K2tcpd (tcpd2− = [C10N6]2− = (C[C(CN)2]3)2− = 2-dicyanomethylene-1,1,3,3-tetracyanopropanediide anion) and 2,2′-bipyrimidine (bpym = C8H6N4) in aqueous solution yields the new compound [Mn2(bpym)3(tcpd)2(H2O)2] (1). The molecular structure of 1 consists of a centrosymmetrical binuclear complex which includes unprecedented unidentate tcpd ligands with two bidentate and a bis-chelate bpym units. Examination of the intermolecular distances reveals that the dinuclear units are held together by hydrogen bonds involving coordinated water molecules and two nitrile groups of the tcpd ligand, giving rise to a 2D structure overall. Variable-temperature magnetic susceptibility data show the occurrence of slight antiferromagnetic coupling (J = −0.58 cm−1) between the Mn(II) ions through bridging bpym (the exchange Hamiltonian being defined as ).  相似文献   

13.
Pt(II) complexes of the types K[Pt(R2SO)X3], NR4[Pt(R2SO)X3] and Pt(R2SO)2Cl2 (where X = Cl or Br) were characterized by multinuclear magnetic resonance spectroscopy (195Pt, 1H and 13C). In 195Pt NMR, the chloro ionic compounds have shown signals between −2979 and −3106 ppm, while the cis disubstituted complexes were observed at higher fields, between −3450 and −3546 ppm. The signal of the compound trans-Pt(DPrSO)2Cl2 was found at higher field (−3666 ppm) than its cis analogue (−3517 ppm), since π-back-donation is considerably less effective in the trans geometry. In 1H NMR, a single signal was observed for the sulfoxide in [Pt(DMSO)Cl3], but for the other more sterically hindered ligands, two series of resonances were observed for the protons in α and β positions. The coupling constant 3J(195Pt-1H) are between 15 and 33 Hz. The 13C NMR results were interpreted in relation to the concept of inversed polarization of the π sulfoxide bond. The 2J(195Pt-13C) values vary between 35 and 66 Hz, while a few 3J(195Pt-13C) couplings were observed (13-26 Hz). The crystal structures of five monosubstituted ionic compounds N(n-Bu)4[Pt(TMSO)Cl3], N(Me)4[Pt(DPrSO)Cl3], K[Pt(EMSO)Cl3], K[Pt(TMSO)Br3] · H2O and N(Et)4[Pt(DPrSO)Br3] and one disubstituted complex cis-Pt(DBuSO)2Cl2 were determined. The trans influence of the different ligands is discussed.  相似文献   

14.
A series of flexible multidentate ligands containing N,P-donor, 2-[N-(diphenylphosphino)methyl]amino-pyridine (L1), 2-[N-bi-(diphenylphosphino) methyl]amino-pyridine (L2), 2-[N-(diphenylphosphino)methyl]amino-7-methyl-1,8-naphthyridine (L3) and 4-[(N-diphenylphosphino)methyl]amino-pyridine) (L4) have been synthesized. The mono- and dinuclear cyclometalated platinum(II) complexes [Pt(C^N^N)L1]ClO4 (HC^N^N = 6-phenyl-2,2′-bipyridine), [Pt2(C^N^N)2L1](ClO4)2, [Pt2(C^N^N)2L2](ClO4)2, [Pt(C^N^N)L3]ClO4 and [Pt2(C^N^N)2L4](ClO4)2 were prepared and their structures determined by X-ray crystal analysis. These complexes exhibit long-lived bright orange emissions ranging from 560 to 610 nm in the solid state at room temperature. In solution, dinuclear complexes have emissions with higher quantum yields than mononuclear complexes. This can be attributed to intramolecular interaction of free functional group with Pt(II) at axial position, resulting in the quenching of phosphorescence for platinum(II) complexes in the 3MLCT excited state.  相似文献   

15.
Short-bite aminobis(phosphonite) containing olefinic functionalities, PhN{P(OC6H3(OMe-o)(C3H5-p))2}2 (1) was synthesized by reacting PhN(PCl2)2 with eugenol in the presence of triethylamine. The ligand 1 acts as a bidentate chelating ligand toward metal complexes [M(CO)4(C5H10NH)2] forming [M(CO)42-PhN{P(OC6H3(OMe-o)(C3H5-p))2}2}] (M = Mo, 2; W, 3). The reaction between 1 and [CpFe(CO)2]2 leads to the cleavage of one of the P-N bonds due to the metal assisted hydrolysis to give a mononuclear complex [CpFe(CO){P(O)(OC6H3(OMe-o)(C3H5-p))2}{PhN(H)(P(OC6H3(OMe-o)(C3H5-p))2)}] (4). Treatment of 1 with gold(I) derivative, [AuCl(SMe2)] resulted in the formation of a dinuclear complex, [(AuCl)2{PhN{P(OC6H3(OMe-o)(C3H5-p))2}2}] (5) with a Au···Au distance of 3.118(2) Å indicating the possibility of aurophilic interactions. An equimolar reaction between 1 and [Ru(η6-p-cymene)Cl2]2 afforded a tri-chloro-bridged bimetallic complex [(η6-p-cymene)Ru(μ-Cl)3Ru{PhN(P(OC6H3(OMe-o)(C3H5-p))2)2}Cl] (6). The crystal structures of 1-3 and 5 were established by single crystal X-ray diffraction studies.  相似文献   

16.
Substitution reaction of chloro η6-arene ruthenium N∩O-base complexes [(η6-arene)Ru(N∩O)Cl] [N∩O = pyrazine-2-carboxylic acid (pca-H), 8-hydroxyquinoline (hq-H); arene = p-iPrC6H4Me, N∩O = hq (1); arene = C6Me6, N∩O = hq (2)] with NaN3 yield the neutral arene ruthenium azido complexes of the general formula [(η6-arene)Ru(N∩O)N3] [N∩O = pca, arene = p-iPrC6H4Me (3), arene = C6Me6 (4); N∩O = hq, arene = p-iPrC6H4Me (5), arene = C6Me6 (6)]. These complexes undergo [3 + 2] dipolar cycloaddition reaction with activated alkynes dimethyl and diethyl acetylenedicarboxylates to yield the arene triazole complexes [(η6-arene)Ru(N∩O){N3C2(CO2R)2}] [N∩O = pca, R = Me, arene = p-iPrC6H4Me (7), C6Me6 (8); R = Et, arene = p-iPrC6H4Me (9), C6Me6 (10); N∩O = hq, R = Me, arene = p-iPrC6H4Me (11) C6Me6 (12); R = Et, arene = p-iPrC6H4Me (13), C6Me6 (14)]. On the bases of proton NMR study, in the above triazole complexes N(2) isomers are assigned with dimethylacetylenedicarboxylate whereas N(1) isomers with diethylacetylenedicarboxylate. All complexes have been characterized by IR and NMR spectroscopy as well as by elemental analysis. The molecular structures of the azido complexes [(η6-p-iPrC6H4Me)Ru(pca)N3] (3), [(η6-p-iPrC6H4Me)Ru(hq)N3] (5) and [(η6-C6Me6)Ru(hq)N3] (6) have been established by single crystal X-ray diffraction studies.  相似文献   

17.
Three new complexes [Pt(dpop)(Cl)2], [(Cl)2Pt(dpop)Pt(Cl)2] and [(bpy)2Ru(dpop)Pt(Cl)2](PF6)2 (dpop = dipyrido(2,3-a:3′,2′-h)phenazine) were prepared and studied. The electronic absorption spectra of the complexes display Pt dπ → dpop π* and Ru dπ → dpop π* MLCT transitions at longer wavelengths than for previously reported similar complexes. Results of cyclic voltammograms show reversible dpop centered reductions while for the mixed metal [(bpy)2Ru(dpop)Pt(Cl)2]2+ an irreversible Pt(II) oxidative wave precedes the Ru(II) oxidation/reduction couple. Spectroelectrochemical results show that all oxidative and reductive processes are completely reversible. The [(Cl)2Pt(dpop)Pt(Cl)2] complex cleaves in solution with pseudo-first order kinetics resulting in loss of the Pt dπ → dpop π* MLCT transition at 545 nm.  相似文献   

18.
The P,P′diphenylmethylenediphosphinic acid (H2pcp) reacts with Co(ClO4)2 · 6H2O and 4,4′-bipyridine to give a mixture of two polymeric isomers of formula [Co(pcp)(bipy)0.5(H2O)2], {red (1) and pink (2)} and the new violet hybrid [Co(Hpcp)2] (3). The pure red and violet species have been obtained by the reaction of H2pcp with Co(CH3COO)2 · 4H2O and bipy or with Co(ClO4)2 · 6H2O, respectively. The analogous reaction of Ni(CH3COO)2 · 4H2O or Ni(ClO4)2 · 6H2O with H2pcp and bipy affords only the [Ni(pcp)(bipy)0.5(H2O)2] species (4). The two cobalt isomers present different structural arrangements. Whereas the red isomer (1) shows an undulated 2D layered structure, the pink one (2) forms an infinite monodimensional strand. Both the architectures extend to higher dimensions through hydrogen bonding interactions. The nickel derivative is isomorphous with the red cobalt isomer. The violet [Co(Hpcp)2] (3), which is isomorphous with the complexes of the reported series [M(Hpcp)2], M = Ca(II), Mg(II), presents a monodimensional polymeric structure. Compounds 1 and 4 show a very similar thermal behaviour, the two water molecules being lost in the temperature range 25-150 and 160-320 °C, respectively. Temperature dependent X-ray powder diffractometry (TDXD) has been performed on compound 1 in order to follow the structural transformations that occur during the heating process.  相似文献   

19.
Substitution of thf ligands in [Cr(thf)3Cl3] and [Cr(thf)2(OH2)Cl3] was investigated. 2,2′-Bipyridine (bipy) was reacted with [Cr(thf)3Cl3] to form [Cr(bipy)(thf)Cl3] (1), which was subsequently reacted with water to give [Cr(bipy)(OH2)Cl3] (2). Reaction of 1 with acetonitrile (CH3CN), pyridine (py) and pyridine derivatives to form [Cr(bipy)(L)Cl3] (L = CH3CN 3, py 4 and 4-pyR with R = NH25, But6 and Ph 7). In addition, the substitution of bipy in [Cr(thf)3Cl3] was followed by 1H NMR spectroscopy at room temperature, which showed completion of the reaction in ca. 100 min. Complex 2 was characterised by single crystal X-ray diffraction. The theoretical powder diffraction pattern of 2 was compared to the experimentally obtained powder X-ray diffraction pattern, and shows excellent agreement. The dimer [Cr2(bipy)2Cl4(μ-Cl)2] was cleaved asymmetrically to give the anionic complex [Cr(bipy)Cl4] (8) and [Cr(bipy)2Cl2]+ (9). Complexes 8 and 9 were characterised by single crystal X-ray diffraction.  相似文献   

20.
The oxidative electrochemistry of chiral, bidentate ferrocenylphosphines, five Taniaphos and seven Walphos ligands, was studied in methylene chloride. In general, two waves of varying reversibility were observed. Complexes of the general type [(phosphine)MCl2] (phosphine = Taniaphos or Walphos; M = Pd or Pt) were prepared and characterized by NMR. Upon coordination, the oxidative electrochemistry of the ligands was greatly simplified. The X-ray structures of a Taniaphos platinum complex as well as a palladium and a platinum complex with a Walphos ligand were determined.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号