共查询到20条相似文献,搜索用时 31 毫秒
1.
Solutions of platinum(IV) nitrate were studied by 195Pt, 15N, 14N, and 17O NMR and IR and Raman spectroscopy. It was found that in nitric acid, two interrelated systems of nitrate complexes, mono- and polynuclear ones, coexist. The complexes predominating in concentrated solutions are [Pt 2(μ-OH)(μ-NO 3)(NO 3) 2(H 2O) 6 ? x (OH) x ] (4 ? x)+, [Pt 4(μ-OH) 3(μ-NO 3) 3(NO 3) 3(H 2O) 9 ? x (OH) x ] (7 ? x)+, [Pt4(μ-OH) 4(μ-NO 3) 2(NO 3) 4(H 2O) 8 ? x (OH) x ] (6 ? x)+, and [Pt 4(μ-OH) 6(NO 3) 3(H 2O) 16 ? x (OH) x ] (7 ? x)+. 相似文献
2.
A DFT study of U(VI) hydroxy complexes was performed with special attention paid to the [(UO2)3(OH)5(H2O)4–7]+ and [(UO2)4(OH)7(H2O)5–8]+ species. It was established that the ionicity of the U=O bond increased when moving from [(UO2)(H2O)5]2+, [(UO2)2(OH)(H2O)8]3+, [(UO2)2(OH)2(H2O)6]2+, [(UO2)3(OH)5(H2O)4–6]+ to [(UO2)4(OH)7(H2O)5–8]+ species. In both [(UO2)3(OH)5(H2O)4–6]+ and [(UO2)4(OH)7(H2O)5–8]+ complexes, the U=O bond was observed to have a range of different lengths which depended on the composition of the first coordination sphere of UO2
2+. The cyclic structures of trimeric complexes were somewhat more stable than their linear structures, which was probably due to the steric effect. 相似文献
3.
Summary The new complex double salts cw-[Co(NH 3)(en) 2(H 2O)] 2 [M(CN) 4] 3 (en = ethylenediamine; M = Ni, Pd or Pt), cis-[Co(NH 3(en) 2(H 2O)] 2[FeNO(CN) 5] 3 and cis-[Co(NH 3)(en) 2(H 2O)][Co(CN) 6] have been synthesized and by anation in the solid state the corresponding new dinuclear complexes with a cyano bridge cis- or trans-[(NH 3)(en) 2Co-NC-M(CN) 3] 2 [M(CN) 4] (M = Ni, Pd or Pt); cis-, trans-[(NH 3)(en) 2Co-NC-FeNO(CN) 4] 2[FeNO(CN) 5] and cis-[(NH 3)(en) 2Co-NC-Co(CN) 5 have been prepared. The complexes have been characterized by chemical analysis, t.g. measurements, and by i.r. and electronic spectroscopy. With [Ni(CN) 4][ 2– and [Co(CN)in] 6
3– only the cis-isomer is produced; with [Pd(CN) 4] 2–, [Pt(CN) 4] 2– and [FeNO(CN) 5] 2– the trans- isomer is the dominant species. The dinuclear complex derived from [Pt(CN) 4] 2– shows strong Pt-Pt interactions both in the solid state and in solution. 相似文献
4.
The preparation of complexes [MX 2( 1 )] (M = Ni, Pd, and Pi; X - Cl, Br, and I; 1 = 1,2-bis[(diphenylphosphino)methyl]benzene). [Pt(OSO 2CH 3)Et( 1 )], [Pt(alkene)( 1 )] (alkene - C 2H 2, and CH 2 = CHCN), and [( 1 )Pt-(μ-H) 2PtH( 1 )][BPh 4] is reported. Their 1H- and 31P-NMR spectra were recorded and used lor structural assignments. The X-ray crystal structure of [Pt(C 2H 4)( 1 )] was determined. It is shown that the P? Pt? P bond angle in this complex differs significantly from those found in related compounds with monodentate phosphines, and that this difference is likely to be due to intramolecular contacts. 相似文献
5.
Reactions of oxygenated cobalt(II) complexes. IX. Oxidative properties of tetrakis(ethylenediamine)-μ-peroxo-μ-hydroxo-dicobalt(III) 1 VIII s. [1]. [(en) 2Co(O 2, OH)Co(en) 2] 3+ ( a ) reacts with I ? in acidic aqueous solution according to: Co III(O 2, OH)Co III + 21 ? + 5H + ? 2Co III + 3H 2O + I 2. Using I ? in excess first order rate constants are obtained which, to a first approximation, are independent of [I ?]. Comparison with kinetic data of deoxygenation of [(en) 2Co(O 2, OH)Co(en) 2] 3+ under analogous conditions suggests that both reactions have the same rate determining step. The singly bridged species [(en) 2(H 2O)CoO 2Co(H 2O) (en) 2] 4+ is shown to be the reactive intermediate in the iodide oxidation ( Schema 2). 相似文献
6.
The synthesis, reduction, optical and e.p.r. spectral properties of a series of new binuclear copper(II) complexes, containing bridging moieties (OH –, MeCO 2
–, NO 2
–, and N 3
–), with new proline-based binuclear pentadentate Mannich base ligands is described. The ligands are: 2,6- bis[(prolin-1-yl)methyl]4-bromophenol [H 3L 1], 2,6- bis[(prolin-1-yl)methyl]4- t-butylphenol [H 3L 2] and 2,6- bis[(prolin-1-yl)methyl]4-methoxyphenol [H 3L 3]. The exogenous bridging complexes thus prepared were hydroxo: [Cu 2L 1(OH)(H 2O) 2] · H 2O (1a), [Cu 2L 2(OH)(H 2O) 2] · H 2O (1b), [Cu 2L 3(OH)(H 2O) 2] · H 2O (1c), acetato [Cu 2L 1(OAc)] · H 2O (2a), [Cu 2L 2(OAc)] · H 2O (2b), [Cu 2L 3(OAc)] · H 2O (2c), nitrito [Cu 2L 1(NO 2)(H 2O) 2] · H 2O (3a), [Cu 2L 2(NO 2)(H 2O) 2] · H 2O (3b), [Cu 2L 3(NO 2)(H 2O) 2] · H 2O (3c) and azido [Cu 2L 1(N 3)(H 2O) 2] · H 2O (4a), [Cu 2L 2(N 3)(H 2O) 2] · H 2O (4b) and [Cu 2L 3(N 3)(H 2O) 2] · H 2O (4c). The complexes were characterized by elemental analysis and by spectroscopy. They exhibit resolved copper hyperfine e.p.r. spectra at room temperature, indicating the presence of weak antiferromagnetic coupling between the copper atoms. The strength of the antiferromagnetic coupling lies in the order: NO 2 N 3 OH OAc. Cyclic voltammetry revealed the presence of two redox couples Cu IICu II Cu IICu I Cu ICu I. The conproportionality constant K
con for the mixed valent Cu IICu I species for all the complexes have been determined electrochemically. 相似文献
7.
The reaction of bis(2-hydroxy-1-naphthaldehyde)succinoyldihydrazone with bis(acetylacetonato)dioxomolybdenum(VI) (MoO 2(acac) 2) in 1 : 3 molar ratio in EtOH : water mixture (95 : 5) affords a complex of composition [(MoO 2) 2(nsh)(H 2O) 2] · C 2H 5OH. The reaction of [(MoO 2) 2(nsh)(H 2O) 2] · C 2H 5OH with Lewis bases, namely pyridine, 2-picoline, 3-picoline, and 4-picoline, yields [(MoO 2) 2(nsh)(B) 2] · C 2H 5OH (where B = pyridine, 2-picoline, 3-picoline, and 4-picoline). Further, when this complex was reacted with 1,10-phenanthroline and 2,2′-bipyridine in 1 : 3 molar ratio in anhydrous ethanol the binuclear complexes [(μ 2-O) 2(MoO 2) 2(H 4nsh)(phen)] · C 2H 5OH and [(μ 2-O) 2(MoO 2) 2(H 4nsh)(bpy)] · C 2H 5OH were obtained. All of the complexes have been characterized by analytical, magnetic moment, and molar conductivity data. The structures of the complexes have been discussed in the light of electronic, IR, 1H NMR, and 13C NMR spectroscopy. 相似文献
8.
A series of new oxo-vanadium(IV) complexes, [VOCl0.69(OH)0.31 (2,2′-bipy)2]Cl·2H2O (1, 2,2′-bipy?=?2,2′-bipyridine) [(VO) 2Cl 4(4,4'-bipy) 3 (H 2O) 2] ( 2, 4,4'-bipy?=?4,4'-bipyridine), [VO(ida)(H 2O)] n ( 3, H 2ida?=?iminodiacetic acid), and [(VO) 2(oa) 4] n·4n(H 3O)·n(H 2O) ( 4, H 2oa?=?oxalic acid), have been synthesized and structurally characterized. 1 contains a [VOCl 0.69(OH) 0.31(2,2′-bipy) 2] + cation, Cl – anion and two free H 2O molecules. 2 exhibits a binuclear centrosymmetric moiety built up from two [VOCl 2(4,4'-bipy)(H 2O)] units and one bridging 4,4'-bipy ligand, which provides a rare example of a 4,4'-bipy molecule acting as monodentate ligand. 3 displays a neutral chain [VO(ida)(H 2O)] n constructed by the linkages of [VO(H 2O)] 2+ units and ida 2? bridging ligands, while 4 offers the only example of three kinds of oa 2- ligands coexisting within the same anionic chain [(VO) 2(oa) 44-] n. Their spectroscopic properties were investigated, and the magnetic susceptibility of 4 shows antiferromagnetic behavior. 相似文献
9.
Naphthaldimines containing N 2O 2 donor centers react with platinum(II) and (IV) chlorides to give two types of complexes depending on the valence of the platinum ion. For [Pt(II)], the ligand is neutral, [(H 2L 1)PtCl 2]·3H 2O ( 1) and [(H 2L 3) 2Pt 2Cl 4]·5H 2O ( 3), or monobasic [(HL 2) 2Pt 2Cl 2]·2H 2O ( 2) and [(HL 4) 2Pt]·2H 2O ( 4). These complexes are all diamagnetic having square-planar geometry. For [Pt(IV)], the ligand is dibasic, [(L 1)Pt 2Cl 4(OH) 2]·2H 2O ( 5), [(L 2)Pt 3Cl 10]·3H 2O ( 6), [(L 3)Pt 2Cl 4(OH) 2]·C 2H 5OH ( 7) and [(L 4)Pt 2Cl 6]·H 2O ( 8). The Pt(IV) complexes are diamagnetic and exhibit octahedral configuration around the platinum ion. The complexes were characterized by elemental analysis, UV-Vis and IR spectra, electrical conductivity and thermal analyses (DTA and TGA). The molar conductances in DMF solutions indicate that the complexes are non-ionic. The complexes were tested for their catalytic activities towards cathodic reduction of oxygen. 相似文献
10.
Syntheses and Characterization of Trimethyl(sufato)platinum(IV) Complexes [(PtMe 3I) 4] ( 1 ) reacts in benzene/acetone (1 : 1) with excess of freshly precipitated silver sulfate (Pt : Ag = 1 : 2) to give [{[PtMe 3(H 2O)] 2SO 4} ∞] ( 2 ) at working up from acetone (not dried) and water to [{PtMe 3(H 2O) 2} 2SO 4] ( 3 ), respectively. [(PtMe 3I) 4] ( 1 ) reacts with AgBF 4 in the corresponding solvent L to give complexes of the type [PtMe 3L 3]BF 4 (L = Me 2CO 4 , MeOH 5 , MeCN 6 , THF 7 ). The triaqua complex 8 (L = H 2O) has been obtained by reaction of 4 with water. All complexes are characterized by microanalysis and NMR spectroscopy ( 1H, 13C, 195Pt). X-ray diffraction analysis of 2 (monoclinic, P2 1) exhibits dinuclear units [Me 3Pt(μ-H 2O)PtMe 3(H 2O)] 2+ at which oxo ligands of sulfate ions are coordinated in such a way that the crystal is threaded by double chains. The Pt–O bonds to μ-aqua ligand are considerably longer than that to terminal aqua ligand (2.322(9)/2.363(8) vs. 2.234(9) Å). The structural characterization of 3 (triclinic, P 1) reveals [PtMe 3(H 2O) 2] + cations that are bridged by a sulfate ion yielding a dinuclear entity [(H 2O) 2Me 3Pt(μ-SO 4)PtMe 3 · (H 2O) 2]. These entities are linked in the crystal by a network of hydrogen bridges. 相似文献
11.
The complex species formed between vanadium(III)?C2,2??-bipyridine (Bipy) and the small blood serum bioligands lactic (HLac), oxalic (H 2Ox), citric (H 3Cit) and phosphoric (H 3PO 4) acids were studied in aqueous solution by means of electromotive forces measurements emf(H) at 25?°C and 3.0?mol?dm ?3 KCl as the ionic medium. The data were analyzed using the least-squares computational program LETAGROP, taking into account the hydrolytic products of vanadium(III) and the binary complexes formed. Formation of the complexes [V(Bipy)(Lac)] 2+, [V(Bipy)(Lac) 2] +, [V(OH) 2(Bipy)(Lac)] and [V 2O(Bipy) 2(Lac) 2] ? were observed in the vanadium(III)?CBipy?CHLac system. Also, the species [V(Bipy)(HOx)] 2+, [V(Bipy)(Ox)] +, [V(OH)(Bipy)(Ox)], [V(OH) 2(Bipy)(Ox)] ? and [V(OH) 3(Bipy)(Ox)] 2? were found in the vanadium(III)?CBipy?CH 2Ox system, the complexes [V(Bipy)(HCit)] +, [V(Bipy)(Cit)], [V(OH)(Bipy)(Cit)] ? and [V(OH) 2(Bipy)(Cit)] 2? were found in the vanadium(III)?CBipy?CH 3Cit system, and the species [V(Bipy)(H 2PO 4)] 2+ and [V(Bipy)(HPO 4)] + were detected in the vanadium(III)?CBipy?CH 3PO 4 system. The stability constants of these complexes were determined. 相似文献
12.
The formation of rhodium(III) sulfate complexes under moderately rigorous temperature conditions was studied by 103Rh and 17O NMR spectroscopy. The complexes [Rh 2(μ-SO 4) 2(H 2O) 8] 2+, [Rh 2( *μ-SO 4)(H 2O) 8] 4+, and [Rh 3(μ-SO 4) 3(μ-OH)(H 2O) 10] 2+ were found to be the most stable species in aged solutions. 相似文献
13.
The crystal structures of two uranyl nitrate complexes with 2,2′-6,2″-terpyridine ( Trpy), [(UO (Trpy)-[(UO 2) 2(Trpy) 2(OH) 2][UO 2(NO 3) 2(OH) 2] · 2CH 3OH ( I) and [(UO 2) 2(Trpy) 2(OH) 2] 2[UO 2(NO 3) 3(H 2O)](NO 3) 3 · 3H 2O ( II), were studied. Compound I consists of the centrosymmetric dimeric cations [(UO 2) 2(Trpy) 2(OH) 2] 2+, the anions [UO 2(NO 3) 2(OH) 2] 2?, and solvation methanol molecules. Complex II consists of dimeric cations [(UO 2) 2(Trpy) 2(OH) 2] 2+, the complex anions [UO 2(NO 3) 3(H 2O)] ?, nitrate anions, and water molecules of crystallization. The uranium atom in the [UO 2(NO 3) 3(H 2O)] ? anion in II has an unusual coordination polyhedron representing a hexagonal bipyramid in which one oxygen atom in the equatorial plane is replaced by two atoms equidistant from this plane. 相似文献
14.
Three supramolecular complexes, [VO(phen)(C 2O 4)(H 2O)]·CH 3OH ( 1) [(VO) 2(u 2-C 2O 4)(C 2O 4) 2(H 2O) 2]·L·H 2O ( 2), and [(4,4′-bipyH 2) 0.5] +[VO 2(2,6-dipic)] ?·2H 2O ( 3) (phen?=?1,10-phenanthroline 4,4′-bipy?=?4,4′-bipyridine, 2,6-dipic?=?2,6-pyridinedicarboxylic, L?=?1,4-bis((3,5-dimethyl-1 H-pyrazol-1-yl)methyl)benzene), have been prepared and characterized by elemental analysis, IR, and UV–vis spectroscopy and single-crystal diffraction analysis. Structural analysis shows that the three complexes all contain carboxylate and V=O moiety; vanadium of 1 and 2 are six coordinate with distorted octahedral geometry with N 2O 4 and O 6 donor sets, respectively, while 3 is five coordinate with distorted trigonal bipyramidal geometry with a NO 4 donor set. The complexes exhibit catalytic bromination activity in the single-pot reaction for the conversion of phenol red to bromophenol blue in H 2O–DMF at 30?±?0.5?C with pH 5.8, indicating that they can be considered as functional model vanadium-dependent haloperoxidases. In addition, electrochemical behaviors are also studied. 相似文献
15.
Metal Complexes of Dyes. X. New Transition Metal Complexes of Anthraquinone Dyes The chloro-bridged compounds [(R 3P)MCl 2] 2 (M ? Pd, Pt; R ? ethyl, phenyl, n-butyl), [(Ph 3P) 2PdCl] 2(BF 4) 2, [(η 5-C 5Me 5)MCl 2] 2 (M ? Rh, Ir), [(η 6-p-cymene)RuCl 2] 2, react with mono- and dianions of several 9,10-anthracene-dione dyes [1-amino-9,10-anthracene-dione, Disperse Blue 19 (1-amino-4-anline-9,10-anthracene-dione), 1,4-diamino-9,10-anthracene-dione, Solventgreen 3 [1,4-bis(4′-methylaniline)-9,10-anthracene-dione], dianthrimide [1,1′-dianthraquinonylamin], 1-azo-β-naphtol-9,10-anthracene-dione, 1-anilido-o-carboxy-9,10-anthracene-dione and Quinizarin (1,4-dihydroxy-9,10-anthracene-dione)] to give N,O-, O,O- and O,N,O-chelate complexes. Copper(II)- and palladium(II) acetate and the anion of 1-aminoanthraquinone afford N,O-bischelates. Spectroscopic data are discussed. In comparision to the free anthraquinones the dye complexes show a bathochromic shift in the UV/VIS spectra. The structures of (ethyl) 3P(Cl)Pt(1-aminoanthraquinone-H +), (η-C 5Me 5)(Cl)Ir(1-azo-β- #naphtolanthraquinone-H +) and (η-C 5Me 5)Rh(1-anilido-o-carboxyanthraquinone-2 H +) were determined by X-ray diffraction. 相似文献
16.
The crystals of four amine‐templated uranyl oxoselenates(VI), [C 3H 12N 2][(UO 2)(SeO 4) 2(H 2O) 2](H 2O) ( 1 ), [C 5H 16N 2] 2[(UO 2)(SeO 4) 2(H 2O)](NO 3) 2 ( 2 ), [C 4H 12N][(UO 2)(SeO 4)(NO 3)] ( 3 ), and [C 4H 14N 2][(UO 2)(SeO 4) 2(H 2O)] ( 4 ) were prepared by evaporation from aqueous solution of uranyl nitrate, selenic acid and the respective amine. The crystal structures of all four compounds have been solved by direct methods from X‐ray diffraction data. The structure of 1 (triclinic, , a = 7.5611(16), b = 7.7650(17), c = 12.925(3) Å, α = 94.605(18), β = 94.405(17), γ = 96.470(17)°, V = 748.8(3) Å 3, R1 = 0.029 for 2769 unique observed reflections) is based upon 0D‐units of the composition [(UO 2) 2(SeO 4) 4(H 2O) 4] 4?. These discrete units are composed from two pentagonal [UO 7] 8? bipyramids linked via [SeO 4] 2? tetrahedra and are unknown in structural chemistry of uranium so far. The structure of 2 (monoclinic, C2/ c, a = 28.916(5), b = 8.0836(10), c = 11.9856(16) Å, β = 110.909(11)°, V = 2617.1(6) Å 3, R1 = 0.035 for 2578 unique observed reflections) contains [(UO 2)(SeO 4) 2(H 2O)] 2? chains of corner‐sharing pentagonal [UO 7] 8? bipyramids and [SeO 4] 2? tetrahedra. The chains run parallel to the c axis and are arranged into layers parallel to (100). In the structure of 3 (monoclinic, C2/ m, a = 21.244(5), b = 7.1092(11), c = 8.6581(18) Å, β = 97.693(17)°, V = 1295.8(4) Å 3, R1 = 0.027 for 1386 unique observed reflections), pentagonal [UO 7] 8? bipyramids share corners with three [SeO 4] 2? tetrahedra each and an edge with a [NO 3] ? anion to form [(UO 2)(SeO 4)(NO 3)] ? chains parallel to the b axis. In the structure of 4 (triclinic, , a = 6.853(2), b = 10.537(3), c = 10.574(3) Å, α = 99.62(3), β = 94.45(3), γ = 100.52(3)°, V = 735.6(4) Å 3, R1 = 0.045 for 2713 unique observed reflections), one symmetrically independent pentagonal [UO 7] 8? bipyramid shares corners with four [SeO 4] 2? tetrahedra to form the [(UO 2)(SeO 4) 2(H 2O)] 2? chains parallel to the a axis. A comparison to related uranyl compounds is given. 相似文献
17.
The new U(VI) compound, [Ni(H 2O) 4] 3[U(OH,H 2O)(UO 2) 8O 12(OH) 3], was synthesized by mild hydrothermal reaction of uranyl and nickel nitrates. The crystal-structure was solved in the P-1 space group, a=8.627(2), b=10.566(2), c=12.091(4) Å and α=110.59(1), β=102.96(2), γ=105.50(1)°, R=0.0539 and w R=0.0464 from 3441 unique observed reflections and 151 parameters. The structure of the title compound is built from sheets of uranium polyhedra closely related to that in β-U 3O 8. Within the sheets [(UO 2)(OH)O 4] pentagonal bipyramids share equatorial edges to form chains, which are cross-linked by [(UO 2)O 4] and [UO 4(H 2O)(OH)] square bipyramids and through hydroxyl groups shared between [(UO 2)(OH)O 4] pentagonal bipyramids. The sheets are pillared by sharing the apical oxygen atoms of the [(UO 2)(OH)O 4] pentagonal bipyramids with the oxygen atoms of [NiO 2(H 2O) 4] octahedral units. That builds a three-dimensional framework with water molecules pointing towards the channels. On heating [Ni(H 2O) 4] 3[U(OH,H 2O)(UO 2) 8O 12(OH) 3] decomposes into NiU 3O 10. 相似文献
18.
The reaction between [(η 5-C 5H 5)MoH(CO) 3] and disulphides gives dimeric or trimeric complexes depending upon the conditions. The syntheses of the novel trinuclear molybdenum carbonyl complex [{Mo(η 5-C 5H 5)(SR)(μ-CO)(CO)} 3] (R = Me), and dinuclear compounds [Mo 2(η 5-C 5H 5)(μ-SR) 3(CO) 4] (R = Me) and [Mo 2(η 5-C 5H 5) 2(SR) 2(CO) 2(μ-SR)(μ-Br)] (R = Me or Ph) are reported. 相似文献
19.
Reacting VO(acac) 2 with six equivalents of dibenzylphosphinic acid in the presence of 4,4′-bipyridine or μ2- N1, N2-di(pyridin-4-yl)oxalamide leads to trimeric (V 3( μ3-O)O 2)( μ2-O 2P(CH 2C 6H 5) 2) 6(4,4′-bipyridine) or the hexamer [(V 3( μ3-O)O 2)( μ2-O 2P(CH 2C 6H 5) 2) 6] 2( μ2- N1, N2-di(pyridin-4-yl)oxalamide). The complexes were characterized by spectroscopic (FTIR and 1H NMR spectroscopies), TGA, and by single crystal X-ray diffraction measurements. The structures consist of a planar central core where three vanadium ions are arranged in the form of a quasi-isosceles triangle and contain an interstitial O which is multiply bonded to one V and weakly interacting at different bond distances to the remaining two V ions. 相似文献
20.
Phosphinic acids, R fP(O)(OH)H (R f=CF 3, C 2F 5, C 6F 5), turned out to be excellent preligands for the coordination of phosphonous acids, R fP(OH) 2. Addition of C 2F 5P(O)(OH)H to solid PtCl 2 under different reaction conditions allows the isolation and full characterization of the mononuclear complexes [ClPt{P(C 2F 5)(OH)O}{P(C 2F 5)(OH) 2} 2] and [Pt{P(C 2F 5)(OH)O} 2{P(C 2F 5)(OH) 2}] containing hydrogen‐bridged [R fP(OH)O] ? and R fP(OH) 2 units. Further deprotonation of [Pt{P(C 2F 5)(OH)O} 2{P(C 2F 5)(OH) 2} 2] leads to the formation of the dianionic platinate, [Pt{P(C 2F 5)(OH)O} 4] 2?, revealing four intramolecular hydrogen bridges. With PdCl 2 the dinuclear complex [Pd 2(μ‐Cl) 2{[P(C 2F 5)(OH)O] 2H} 2] was isolated and characterized. The Cl ? free complex [Pd{P(C 2F 5)(OH)O} 2{P(C 2F 5)(OH) 2} 2] was also prepared and deprotonated to the dianionic palladate, [Pd{P(C 2F 5)(OH)O} 4] 2?. Both compounds were characterized by NMR spectroscopy, IR spectroscopy, and X‐ray analyses. In addition, the C 6F 5 derivatives [ClPt{P(C 6F 5)(OH)O}{P(C 6F 5)(OH) 2} 2] and [Pd 2(μ‐Cl) 2{[P(C 6F 5)(OH)O] 2H} 2] as well as the CF 3 derivative [Pd 2(μ‐Cl) 2{[P(CF 3)(OH)O] 2H} 2] were synthesized and fully characterized. Phosphonous acid complexes are inert towards air and moisture and can be stored for several months without decomposition. The catalytic activity of the palladium complexes in the Suzuki cross‐coupling reaction between 1‐bromo‐3‐fluorobenzene and phenyl boronic acid was demonstrated. 相似文献
|