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1.
Pankaj K. Sharma A. K. Rai Yashpal Singh 《Phosphorus, sulfur, and silicon and the related elements》2013,188(9):2147-2154
The reactions of triphenylantimony(v) isopropoxide with 2,2-disubstituted benzothiazolines in a 1:2 molar ratio in refluxing benzene solution yielded the corresponding triphenylantimony(v) derivatives (1–5) of the type Ph3Sb[SC6H4N: C(R)CH2C(O)R']2, [Where, R═CH3, R'═CH3(1); R═CH3, R'═C6H5(2); R═CH3, R'═4-CH3C6H4(3); R═CH3, R'═4-ClC6H4(4); and R═CF3, R'═C6H5(5)]. All of these newly synthesized derivatives have been characterized by elemental analyses and molecular weight measurements as well as IR and NMR [1H and 13C] spectral studies. On the basis of spectral data, seven-coordination around central antimony atom has been assigned to these derivatives. 相似文献
2.
《Journal of Coordination Chemistry》2012,65(10):1750-1764
Reactions of copper(I) halides with triphenyl phosphine in acetonitrile followed by the addition of salicylaldehyde N-ethylthiosemicarbazone {(2-OH–C6H4)(H)C2=N3–N2H–C1(=S)N1HEt, H2stsc-NEt} in chloroform in 1?:?2?:?1 (Cl) or 1?:?1?:?1 (Br, I) molar ratios yield mononuclear, [CuCl(η 1-S-H2stsc-NHEt)(PPh3)2] (1) and sulfur-bridged dinuclear, [Cu2X2(μ-S-H2stsc-NEt)2(PPh3)2] (X?=?Br, 4; I, 5) complexes. Similarly, reaction of silver halides (Cl, Br) with H2stsc-NEt in acetonitrile followed by the addition of PPh3 to the solid that formed (1?:?1?:?2 molar ratio), yielding mononuclear complexes, [AgX(η 1-S-H2stsc-NHEt)(PPh3)2] (Cl, 2; Br, 3). All these complexes are characterized with analytical data, IR, and NMR spectroscopy and single-crystal X-ray crystallography. The ligand favored η 1-S bonding in 1, 2, and 3, and μ-S bonding in 4 and 5. Cu?···?Cu contacts were 3.063?Å. The complexes form 1-D or 2-D H-bonded networks, entrapping solvent in some cases. 相似文献
3.
《Journal of Coordination Chemistry》2012,65(12):1335-1347
Eight diorganotin(IV)-oxo-carboxylates {[R2Sn(O(O)CR′)]2O}2?·?Y (R′?=?C4H3N2Y?= H2OR?=?nBu 1, Y?=?0 R?=?Me 2, Y?=?0 R?=?C6H5 3, Y?=?0 R?=?C6H5CH2 4; R′?=?CH2SC4H3N2-2,6Y?=?0 R?=?nBu 5, Y?=?CH2Cl2R?=?Me 6, Y?=?0 R?=?C6H5 7, Y?=?0 R?= C6H5CH2 8) have been prepared in 1?:?1 molar ratios by reactions of diorganotin(IV) oxide with 2-pyrazinecarboxylic acid or (2-pyrimidylthio)acetic acid, respectively. All the complexes are characterized by elemental analysis, IR, 1H NMR and 13C NMR spectra. Except for 2, 4 and 7, the complexes are also characterized by X-ray crystallography diffraction analyses, which reveal that the complexes adopt the familiar dicarboxylato tetraorganodistannoxane structural mode. Among them, the evident difference is that weak intramolecular interactions between Sn and N atoms are recognized in complexes 1 and 3. However, for complex 5 two different coordination modes are found in the same lattice. 相似文献
4.
Damir A. Safin Maria G. Babashkina Michael Bolte Axel Klein 《Phosphorus, sulfur, and silicon and the related elements》2013,188(12):2426-2432
The reaction of O,O′-diisopropylphosphoric acid isothiocyanate (iPrO)2P(O)NCS with 2-methylaniline 2-MeC6H4NH2, 2,6-dimethylaniline 2,6-Me2C6H3NH2, or 2,4,6-trimethylaniline 2,4,6-Me3C6H2NH2 leads to the N-phosphorylated thioureas RNHC(S)NHP(O)(OiPr)2 (R = 2-MeC6H4?, HLI ; 2,6-Me2C6H3?, HLII ; 2,4,6-Me3C6H2?, HLIII ). Reaction of the potassium salts of HLI –III with Ni(II) in aqueous EtOH leads to [Ni(LI–III-N,S)2] ([NiLI–III 2 ]) chelate complexes. The compounds obtained were investigated by 1H, 31P{1H} NMR spectroscopy and microanalysis. The molecular structure of the thiourea HLIII was elucidated by single crystal X-ray diffraction analysis. Single crystal X-ray diffraction studies showed that HLIII forms both intra- and intermolecular hydrogen bonds, which in turn leads to the formation of polymeric chains. One of the intermolecular hydrogen bonds is of the type N?H…S. Moreover, the formation of intermolecular C?H…η6-phenyl interactions was established. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. 相似文献
5.
《Journal of Coordination Chemistry》2012,65(1):28-47
The coordination of organochalcogen (especially Se and Te) substituted Schiff-bases L1H, L2H, L3H, and L4H toward Zn(II) and Hg(II) has been studied. Reactions of these ligands with ZnCl2 in 1?:?1 molar ratio gave binuclear complexes [{2-[PhX(CH2) n N?=?C(Ph)]-6-[PhCO]-4-MeC6H2O}2Zn2Cl2] (where X?=?Se, n?=?2 (1); X?=?Se, n?=?3 (2); X?=?Te, n?=?2 (3); and X?=?Te, n?=?3 (4)) with partial hydrolytic cleavage of proligands. In these complexes, two partially hydrolyzed ligand fragments coordinate tridentate (NOO) with two Zn's. Reaction of HgBr2 with L1H and L2H in 1?:?1 molar ratio gave monometallic complexes [C6H2(4-Me)(OH)[2,6-{C(Ph)?=?N(CH2) n Se(Ph)}2HgBr2]] (n?=?2 (5) or 3 (6)) and under similar conditions with L3H and L4H gave bimetallic complexes [C6H2(4-Me)(OH)[2,6-{C(Ph)?=?N(CH2) n Te(Ph)}2Hg2Br4]] (n?=?2?(7) or 3 (8)) in which the ligands coordinate with metal through selenium or tellurium, leaving the imino nitrogen and phenolic oxygen uncoordinated. The proligands L1H, L2H give 14- or 16-membered metallamacrocycles through Se–Hg–Se linkages and L3H, L4H give 16- or 18-membered metallamacrocycles through Te–Hg–Br–Hg–Te linkages. All the complexes were characterized by elemental analyses, ESIMS, FTIR, multinuclear NMR, UV-Vis, and conductance measurements. The redox properties of the complexes were investigated by cyclic voltammetry (CV). Complexes 1–4 exhibited ligand-centered irreversible oxidation processes. Complexes 5 and 6 showed metal-centered quasi-reversible single electron transfer, whereas dinuclear complexes 7 and 8 displayed two quasi-reversible, one-electron transfer steps. A single-crystal X-ray structure determination of 1 showed that the coordination unit is centrosymmetric with Zn(II) in square-pyramidal coordination geometry and the two square pyramids sharing an edge. The Zn?···?Zn separation is 3.232?Å. The DNA-binding properties of 1 and 3 with calf thymus DNA were explored by a spectrophotometric method and CV. 相似文献
6.
《Journal of Coordination Chemistry》2012,65(17):2980-2991
Three new complexes (1–3) have been synthesized and characterized by X-ray single crystal determination and evaluated for inhibitory activity on jack bean urease. All the complexes contained a new cinnamic acid derivative as the ligand (C11H12O4), (E)-3-(3,4-dimethoxyphenyl)acrylic acid, and crystallized in monoclinic C2/c space group. Complex 1 (C11H11O4)4(C3N2H8)2Cu2 (C3N2H8?=?1,2-diaminopropane) was obtained with a?=?20.488(2), b?=?19.596(2), c?=?15.2500(13), β?=?93.502(2)°, V?=?6111.2(10)?Å3, Z?=?4, R 1 ?=?0.0616, and wR 2 ?=?0.2059. Complex 2 (C11H11O4)4(C3N2H8)2Cu2 (C3N2H8=1,3-diaminopropane) was obtained with a?=?20.2494(12), b?=?19.5732(12), c?=?14.8940(8), β?=?96.884(2)°, V?=?5860.6(6)?Å3, Z?=?4, R 1 ?=?0.0409, and wR 2 ?=?0.1107. Complex 3 (C11H11O4)2(C2N2H6)2Ni2·H2O (C2N2H6?=?ethylenediamine) was obtained with a?=?28.359(2), b?=?6.5422(5), c?=?16.8587(14), β?=?101.359(2)°, V?=?3066.5(4)?Å3, Z?=?4, R 1 ?=?0.0422, and wR 2 ?=?0.1190. It was found that copper(II) complexes 1 [IC50?=?4.71?μM] and 2 [IC50?=?3.15?μM] showed strong inhibitory activity against jack bean urease compared with acetohydroxamic acid [IC50?=?10.01?μM] as a positive reference. Unfortunately, 3 exhibited no inhibitory activity. 相似文献
7.
《Journal of Coordination Chemistry》2012,65(13):2287-2300
Three Cu(II) complexes, Cu2(bpy)(H2O)(Clma)2 (1), Cu2(bpe)(H2O)2(Clma)2 (2), and Cu(bpp)(Clma) (3), were synthesized (HClma = (R)-2-Chloromandelic acid, bpy?=?4,4′-dipyridine, bpe?=?1,2-di(4-pyridyl)ethylene, bpp?=?1,3-di(4-pyridyl)propane). Complexes 1, 2, and 3 are constructed from 1-D coordination arrays generated from Cu2(H2O)(Clma)2, Cu2(H2O)2(Clma)2, and Cu2(Clma)2 moieties and linked through bpy, bpe, and bpp co-ligands, respectively. 1 and 2 are assembled into 3-D supramolecular networks via O–H?O hydrogen bonds with topology of (63)(69·8) and (412·63), respectively, and 3 is assembled into a 3-D architecture through C–H?O hydrogen bonds with topology of (43·63)(43)(44·65·8)(46·66·83). Compounds 1, 2, and 3 crystallized in acentric space groups P21, P1, and P21, which exhibit significant ferroelectricity (remnant polarization Pr?=?0.008?μC?cm?2, coercive field Ec?=?21.4?kV?cm?1, the spontaneous saturation polarization Ps?=?0.167?μC?cm?2 for 1, Pr?=?0.183?μC?cm?2, Ec?=?1.69?kV?cm?1, and Ps?=?0.021 μC?cm?2 for 3). Results from infrared and thermal analyses are also discussed. 相似文献
8.
《Journal of Coordination Chemistry》2012,65(23):4088-4103
Tellurium-bearing acyclic Schiff bases, 2,6-bis({N-[2-(phenyltellurato)ethyl]}benzimidoyl)-4-methylphenol (HL3 ) and 2,6-bis({N-[3-(phenyltellurato)propyl]}benzimidoyl)-4-methylphenol (HL4 ) of the Te2N2O type have been prepared by condensation of 4-methyl-2,6-dibenzoylphenol (mdbpH) with the appropriate phenyltellurato(alkyl)amine. HL3 and HL4 have been characterized by mass spectrometry, IR, electronic and 1H-NMR spectroscopies and cyclic voltammetry. Their reactions with Cu(II) acetate monohydrate in a 2?:?1 molar ratio in methanol yield [(C6H2(O)(Me){(C6H5)C=N(CH2)nTe(C6H5)}{(C6H5)C=O})2Cu] (3 (n?=?2), 4 (n?=?3)) as suggested by analytical and spectroscopic data and single crystal X-ray crystallography of 3. In both complexes, one arm of the ligand undergoes hydrolysis at the C=N position and two molecules of the partially hydrolyzed ligand coordinate to Cu(II) through imido nitrogen and the phenolic oxygen. The telluriums do not form part of the copper(II) distorted square planar coordination sphere which has a trans-CuN2O2 core. Electrochemical studies of 3 and 4 indicate quasi-reversible reductions (E°′?=??1.113?V (3) and ?1.149?V (4)) corresponding to the reduction of copper(II) to copper(I). The interactions of 3 and 4 with calf thymus DNA, investigated by spectrophotometry and cyclic voltammetry, indicate that 3 and 4 bind to DNA via intercalation, and the binding affinity of 3 is lower than that of its selenium analog. 相似文献
9.
Pd(II) complexes of Schiff bases and their application as catalysts in Mizoroki–Heck and Suzuki–Miyaura cross‐coupling reactions
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Schiff bases of 2‐(phenylthio)aniline, (C6H5)SC6H4N?CR (R = (o‐CH3)(C6H5), (o‐OCH3)(C6H5) or (o‐CF3)(C6H5)), and their palladium complexes (PdLCl2) were synthesized. The compounds were characterized using 1H NMR and 13C NMR spectroscopy and micro analysis. Also, electrochemical properties of the ligands and Pd(II) complexes were investigated in dimethylformamide–LiClO4 solution with cyclic and square wave voltammetry techniques. The Pd(II) complexes showed both reversible and quasi‐reversible processes in the ?1.5 to 0.3 V potential range. The synthesized Pd(II) complexes were evaluated as catalysts in Mizoroki–Heck and Suzuki–Miyaura cross‐coupling reactions. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
10.
《Journal of Coordination Chemistry》2012,65(8):1184-1199
5-Amino-4-arylazo-3-methyl-1-phenylpyrazole (aryl?=?C6H5,o-C6H4COOH,o-C6H4OH) and its complexes with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg(II) ions were synthesized. The complexes are in the ratio 1?:?1 and 1?:?2 (metal?:?ligand). Ligands and complexes were subjected to elemental analysis, IR, Raman, UV-Vis and 1H-NMR spectroscopy. The mass spectra of the ligands were discussed. Thermal analysis and magnetic measurements were carried out for the prepared complexes. The X-ray single crystal structure of [Ni(L1)2] was performed. The investigated pyrazole compounds coordinate as bidentate ligands through amino and azo nitrogens or tridentate through NNO. The molar conductance of the chelates is measured and reflected the non-electrolytic nature of the prepared complexes. 相似文献
11.
Vuppalapati Giri Prasanth Ravindranath S. Rathore 《Journal of Coordination Chemistry》2017,70(6):983-996
A series of new mononuclear heteroleptic derivatives of aluminum(III), {[(CH3COCHCOCH3)AlL] (1 and 4)}, {[(C6H5COCHCOC6H5)AlL] (2, 5, and 7)}, and {[(C9H6NO)AlL] (3 and 6)}, have been synthesized by reacting Al(OPri)3 with tridentate Schiff base H2Lx (H2L1 = C13H10BrNO2; H2L2 = C14H13NO3; H2L3 = C17H13NO2) and β-diketone/8-hydroxyquinoline (β-diketone = acetylacetone/dibenzoylmethane) in 1?:?1?:?1 stoichiometry using anhydrous benzene and ethanol. All the complexes were characterized by elemental analysis, FTIR, and NMR (1H and 13C) spectral studies. Molecular structures obtained from single-crystal XRD of aqua 1 (1a) and DMSO coordinated 2 (2a) authenticate their existence. Further, nanostructured α-alumina was synthesized from 1 by well-established sol–gel method and was characterized by powder XRD, TEM, and EDX analyses. 相似文献
12.
《Journal of Coordination Chemistry》2012,65(24):4236-4244
The angular polytopic dipyridyl ligand 2,6-bis(quinoline-2-carboxamido)pyridine (H2L) was prepared. Assemblies of H2L with ZnAc2 and HgAc2 resulted in two new dinuclear complexes [Zn2(L)(Ac)2]?·?1.5H2O?·?0.5CH3OH (1) and [Hg2(L)(Ac)2]?·?5H2O?·?CH3OH (2) where the doubly deprotonated L2? bi-chelate as μ-kN,N′?:?kN″,N″′, bridging the two metal centers (Ac?=?acetate). In 1, the two Zn(II) ions are also doubly bridged by two Ac ions in a μ-kO?:?kO′ coordination, and thus each metal center adopts a distorted tetrahedral geometry. In 2, each Ac ion is only terminal to Hg(II), in a rare distorted triangular or T-shaped coordination geometry. Free H2L, 1, and 2 emit interesting bluish-green fluorescence with strong intensities. Thermogravimetric analysis of 1 shows that the dinuclear structure of 1 is stable to 382°C. 相似文献
13.
《Journal of Coordination Chemistry》2012,65(23):4031-4040
In an attempt to prepare potassium/sodium salts of malonato-triphenylstannate, two bis(triphenyltin) malonates were obtained instead, [(C6H5)3Sn]3[O2CCH2CO2]1.5 (1) and {[(C6H5)3SnO2CCH2CO2Sn(C6H5)3]H2O}CH3CH2OH (2). This provides an excellent example of structural diversity in triorganotin carboxylates. In both complexes, the dicarboxylate was connected to the triphenyltin groups forming a linear infinite polymeric chain. Both complexes have a trans-trigonal bipyramidal geometry with the three phenyl groups occupying the equatorial plane and two oxygens at axial positions. Both short and long tin–oxygen distances were observed in 1 and 2. In 1, all carboxylates functioned as bridging bidentate ligands, resulting in an infinite 3-D polymer network propagating along all three axes. In 2, Sn1 is bonded to a carboxylate and a water molecule (Sn1–O1 2.145(3)?Å, Sn1–O3 2.341(3)?Å, O1–Sn1–O3 173.97(12)°). Only one carboxylate acts as a bidentate ligand allowing the carbonyl group to be axially coordinated to the adjacent tin, Sn2. Also, Sn2 is covalently bonded to the other carboxylate group in the malonate ligand (Sn2–O4 2.163(3)?Å, Sn2–O5 2.353(3)?Å, O4–Sn2–O5 173.47(12)°). There is a water molecule included in the crystal lattice hydrogen bonded to the uncoordinated carbonyl in malonate. 相似文献
14.
《Journal of Coordination Chemistry》2012,65(16-18):3008-3020
AbstractThree new homoleptic complexes of nickel having the formula [Ni(L1)2] [L1?=?C14H14N1O2S2-, N-(4-methoxybenzyl)(furfuryl)methane dithiocarbamate] (1), [Ni(L2)2] [L2?=?C17H18N1O2S2–, N-bis(4-methoxybenzyl)methane dithiocarbamate] (2) and [Ni(L3)2] [L3?=?C19H21N1O1S2-, N-(4-isopropylbenzyl)(4-methoxybenzyl)methane dithiocarbamate] (3), have been designed, synthesized, and characterized by elemental analysis, IR, 1H and 13C NMR and UV-visible absorption spectra showing that all complexes having analogous geometry and coordination number. The molecular structure of 2 is confirmed by single-crystal X-ray crystallography, which indicates that +2 charges on the metal ion (Ni2+) are balanced by dithiocarbamate anion. The X-ray analysis for 2 reveals a distorted square planar geometry around Ni2+ ion. Both C?–?H···S and intermolecular C–H···Ni interactions are the only artifact for the resulting Ni-dithiocarbamate architecture in 2. The electrical conductivity measurement between temperatures range of 303–393 K reflects that all complexes exhibit weak semiconducting behavior. Powder XRD, EDAX, and SEM spectra confirm the formation of NiS as thermal decomposition product in 1–3. The crystalline size of samples 1–3 was found to be 20.31?nm, 20.97?nm, and 20.39?nm, respectively. 相似文献
15.
On Chalcogenolates. 179. Copper(I) Thioxanthates and Thioxanthatocuprates(I) Copper(I) thioxanthates Cu[S2C? SR], where R = C2H5, nC4H9, and CH2? C6H5, have been prepared by two procedures and studied by means of diverse methods. They are soluble in ethanolic and acetonic solutions containing the corresponding [S2C? SR]? ions in excess to yield thioxanthatocuprates(I) [Cun(S2C? SR)n+1]?. The compounds [(C6H5)4P][Cun(S2C? SC2H5)n+1] with n = 1, 4, 6 have been isolated. The existence of [(C6H5)4P][Cu4(S2C? SC4H9)5] and [(C6H5)4P][Cu6(S2C? SCH2? C6H5)7] has been ascertained. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(23):4191-4200
Six new organotin(IV) complexes were synthesized by direct reaction of RSnCl3 (R?=?Me, Bu and Ph) or R2SnCl2 (R?=?Me, Bu and Ph) and 2-hydroxyacetophenone thiocarbohydrazone [H2APTC] under purified nitrogen in the presence of base in 1?:?2?:?1 molar ratio (metal: base: ligand). Complexes 2–7 have been characterized by elemental analyses, molar conductivity, UV-Visible, IR and 1H NMR spectral studies. Complexes 2–7 are non-electrolytes. The molecular structure of [Me2Sn(APTC)]?·?(C2H5OH) (5) has been determined by X-ray diffraction analysis. The thiocarbohydrazone ligand (1) and 2–7 have been tested for antibacterial activity against Escherichia coli, Staphylococcus aureus, Salmonella typhi and Enterococci aeruginosa. 相似文献
17.
《Journal of Coordination Chemistry》2012,65(5):453-460
Two malonato-bridged hexamethylenetetramine coordination polymers, M2(hmt)(H2O)2(mal)2 [hmt?=?hexamethylenetetramine, mal?=?malonate(2-), M?=?Mn (1), Cu (2)] were prepared and structurally characterized. The isostructural complexes are orthorhombic, space group Imm2, with a?=?7.104(1), b?=?15.982(3), c?=?7.702(1)?Å, Z?=?2, D calc?=?1.862?g?cm?3(1) and a?=?6.962(3), b?=?15.500(7), c?=?7.627(3)?Å, Z?=?2, D calc?=?2.047?g?cm?3for 2. The transition metals are octahedrally coordinated by one nitrogen atom of an hmt ligand and five oxygen atoms of a water molecule and three malonate anions. The latter coordinate in chelating/bis-monodentate mode to give 2D layers with a (4,?4) topology, and which are pillared by bridging bidentate hmt ligands to generate an open 3D framework with channels extending in the [001] direction. Over the temperature range 5–300?K, 2 behaves paramagnetically, following the Curie–Weiss law χm(T???θ)?=?4.521(6)?cm3mol?1K with a Weiss constant θ?=??4.8(2)?K. 相似文献
18.
The crystal and molecular structure of the complex containing cobalt-carbon and iron-sulfur cluster cores, (μ-p-CH3C6H4C2S) (μ-n-C3H7S)Fe2(CO)6Co2(CO)6, has been determined by X-ray diffraction method. The crystals are triclinic, space group P&1bar;, with a — 9.139(2), b=9.610(1), c-17.183(2) Å, α = 84.36(1), β-89.45(1), γ=88.15(1)°, V-1501.0 Å3; Z=2, Dc=1.74 g/cm3. R=0.072, Rw=0.081. The results of the structure determination show a cobalt-carbon cluster core formed through the reaction of (μ-p-CH3C6H4C2S)(μ-n-C3H7S)Fe2(CO)6 with Co2(CO)8. In the cobalt-carbon cluster core, the bond length of the original C≡C lengthened to 1.324 Å which is close to the typical value of carbon-carbon double bond. The groups connecting the carbons of the cluster core are in cis position and lie on the opposite side of cobalt atoms. In this complex, the conformation of —SC3H7 is e-type, while that of —SC2C6H4CH3 is a-type. 相似文献
19.
《Journal of Coordination Chemistry》2012,65(2):277-284
Six macrocyclic complexes, were synthesized by reaction of 1,4-bis(2-carboxyaldehyde phenoxy)butane and various amines and their copper(II) perchlorate complexes were synthesized by template effect reaction of 1,4-bis(2-carboxyaldehyde phenoxy)butane, Cu(ClO4)2?·?6H2O and amines. The metal-to-ligand ratios were found to be 1?:?1. Cu(II) metal complexes are 1?:?2 electrolytes as shown by their molar conductivities (ΛM) in DMF (dimethyl formamide) at 10?3?M. The Cu(II) complexes are proposed to be square planar based on elemental analysis, FT–IR, UV–Vis, magnetic susceptibility measurements, molar conductivity measurements, and mass spectra. 相似文献
20.
Anikul Islam Mrinal Kanti Ghosh Suman Mondal Paula Brandão 《Journal of Coordination Chemistry》2019,72(1):164-179
The heterogeneous phase reaction of excess sodium salt of 2-hydroxypyridine (OHpy) with [Ru(κ2C,O-RL)(PPh3)2(CO)Cl] (1) afforded complexes of the type [Ru(κ1C-RL)(PPh3)2(CO)(Opy)] (2) in excellent yield [κ2C,O-RL is 4-methyl-6-((N-R-arylimino)methyl)phenolato-C2,O), κ1C-RL is 4-methyl-6-((N-R-arylimino)methyl)phenol-C2) and R is H, Me, OMe, Cl]. The chelation of Opy is attended with the cleavage of Ru-O and Ru-Cl bonds and iminium-phenolato → imine-phenol prototropic shift. The 1→2 conversion is irreversible and the type 2 species are thermodynamically more stable than the acetate, nitrite, and nitrate complexes of 1. The spectral (UV-vis, IR, NMR) and electrochemical data of the complexes are reported. In dichloromethane solution the complexes display one quasi-reversible RuIII/RuII cyclic voltammetric response with E1/2 in the range 0.65–0.69 V versus Ag/AgCl. The crystal and molecular structures of [Ru(κ1C-HL)(PPh3)2(CO)(Opy)]·2C6H6·0.5H2O, 2(H)·2C6H6·0.5H2O and [Ru(κ1C-ClL)(PPh3)2(CO)(Opy)]·2C6H6·0.25H2O, 2(Cl)·2C6H6·0.25H2O are reported, which revealed a distorted octahedral RuC2P2NO coordination sphere. The pairs (P,P), (C,O), and (C,N) define the three trans directions. The electronic structures of the complexes are also scrutinized by density functional theory. 相似文献