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1.
Dissolution of [Fe2(μ-CO)(CO)4{μ-(RO)2PN(Et)P(OR)2}2] (R = Me, Pri or Ph) and [Ru2(μ-CO)(CO)4{μ-(RO)2PN(Et)P(OR)2}2](R = Me or Pri) in CCl4 leads to the rapid formation of [Fe2(μ-Cl)(CO)4 {μ-(RO)2PN(Et)P(OR)2}2]Cl and [Ru2Cl2(CO)4 {μ-(RO)2 PN(Et)P(OR)2}2], respectively, with the latter isomerising in dichloromethane or chloroform solution to [Ru2(μ-Cl)(Cl(CO)4{μ-(RO)2PN(Et)P(OR)2}2]Cl, which in turn decarbonylates to [Ru2(μ-Cl)Cl(CO)3{μ-(RO)2PN(Et)P(OR)2}2]; the structure of [Ru2Cl2(CO)4{μ-(MeO)2PN(Et)P(OMe)2}2] has been established X-ray crystallographically.  相似文献   

2.
Reaction of the ligand-bridged derivatives [M3(CO)10{μ-(RO)2PN(Et)P(OR)2}] and [M3(CO)8{μ-(RO)2PN(Et)P(OR)2}2] (M = Ru or Os; R = Me or Pri) with halogens leads to the formation of cationic products [M3(μ-X)(CO)10{μ- (RO)2PN(Et)P(OR)2}]+ and [M3(μ-X)(CO)8{μ-(RO)2PN(Et)P(OR)2}2]+ (X = Cl, Br or I) in which the halogen bridges an opened edge of the metal atom framework; the crystal structure of [Ru3(μ-I)(CO)8{μ-(MeO)2PN(Et)P(OMe)2}2]PF6 is reported.  相似文献   

3.
Reaction of [Ru3(CO)12] with a two molar proportion of (RO)2PN(Et)P(OR)2 (R = Me or Pri) in benzene under reflux affords a number of products including [Ru3(CO)10{μ-(RO)2PN(Et)P(OR)2}], [Ru3(CO)9{μ-(RO)2PN(Et)P(OR)2}{η1-(RO)2PN(Et)P(OR)2}] and, as the major species, the tetranuclear derivative [Ru4(μ3-η2-CO)(CO)9{μ-(RO)2PN(Et)P(OR)2}2]. An X-ray diffraction study of [Ru4(μ3-η2-CO)(CO)9{μ-(MeO)2PN(Et)P(OMe)2}2] has revealed that the skeletal framework adopts a butterfly structure and that one of the carbonyl groups functions as a triply bridging four-electron donor ligand capping the two wing-tip and one of the hinge ruthenium atoms.  相似文献   

4.
Treatment of [Ru2(μ-CO)(CO)4{μ-(RO)2PN(Et)P(OR)2}2] (R = Me or Pri), electron-rich derivatives of [Ru2(CO)9], with a twice molar amount of a silver(I) salt in aprotic, weakly co-ordinating solvents such as acetone, acetonitrile or benzonitrile leads to the formation of the solvento species [Ru2(CO)5(solvent)- {μ-(RO)2PN(Et)P(OR)2}2]2+. The structure of the benzonitrile derivative, [Ru2(CO)5(PhCN){μ-(PriO)2PN(Et)P(OPri)2}2](SbF6)2, has been established by X-ray crystallography. The acetone molecule in [Ru2(CO)5(acetone){μ- (RO)2PN(Et)P(OR)2}2]2+ is readily replaced by various nucleophiles to afford products of the type [Ru2(CO)5L{μ-(RO)2PN(Et)P(OR)2}2]2+, where L is a neutral ligand such as CO, Me2C6H3NC, PhCN, C5H5N, H2O, Me2S or SC4H8, [Ru2Y(CO)5{μ-(RO)2PN(Et)P(OR)2}2]2+, where Y− is an anionic ligand such as Cl−, Br−, I−, CN−, SCN−, MeCO2−, CF3CO2− or [Ru2(μ-Y)(CO)4{μ-(RO)2- PN(Et)P(OR)2}2]+ where Y− is an anionic ligand such as Cl−, Br−, I−, SPh−, S2CNEt2−, MeCO2− or CF3CO2−.  相似文献   

5.
Reaction of [Fe2(CO)9] with a half molar amount of R2PYPR2 (Y = CH2, R = Ph, Me, OMe or OPri; Y = N(Et), R = OPh, OMe or OCH2; Y = N(Me), R = OPri or OEt) leads to the ready formation of a product which on irradiation with ultraviolet light rapidly decarbonylates to the heptacarbonyl derivative [Fe2(μ-CO)(CO)6{μ-R2PYPR2}]. Treatment of the latter with a slight excess of the appropriate ligand results, under photochemical conditions, in the formation of the dinuclear pentacarbonyl complex [Fe2(μ-CO)(C))4{μ-R2PYPR2}2] but under thermal conditions in the formation of the mononuclear species [Fe(CO)3{R2PYPR2}]. Reaction of [Ru3(CO)12] with an equimolar amount of (RO)2PN(R′)P(OR)2 (R′ = Me, R = Pri or Et; R′ = Et, R = Ph or Me) under either thermal or photochemical conditions produces [Ru3(CO)10{μ-(RO)2PN(OR)2}] which reacts further with excess (RO)2PN(R′)P(OR)2 on irradiation with ultraviolet light to afford the dinuclear compound [Ru2(μ-CO)(CO4{μ-(RO)2PN(R′)P(OR)2}2]. The molecular structure of [Ru2(μ-CO)(CO)4{μ-(MeO)2PN(Et)P(OMe)2}2], which has been determined by X-ray crystallography, is described.  相似文献   

6.
Protonation of the dinuclear compounds [M2(μ-CO)(CO)4(μ-R2PYPR2)2] by HBF4 or HPF6 leads to the formation of crystalline cationic hydrido products [M2H(CO)5(μ-R2PYPR2)2]X and [M2(μ-H)(μ-CO)(CO)4(μ-R2PYPR2)2]X (X = BF4 or PF6) in which the hydride ligand is terminal for M = Ru, Y = N(Et) and R = OMe or OPri and bridging for M = Fe, Y = CH2 and R = Me or Ph, for M = Fe, Y = N(Et) and R = OMe, OEt, OPri or OPh and for M = Ru, Y = CH2 and R = Ph; the fluxional behaviour of [Ru2H(CO)5{μ-(RO)2PN(Et)P(OR)2}2]+ (R = Me or Pri) in solution is described.  相似文献   

7.
Treatment of [Rh2Cl2(CO)2 {μ-(PhO)2PN(Et)P(OPh)2}2] with various reducing agents gives a number of products, the type depending on the conditions employed. The products isolated include [Rh2(CO)2{μ-(PhO)2PN(Et)P(OPh)2}2], [Rh2(CO)3{μ-(PhO)2PN(Et)P(OPh)2}2],and [Rh2HgCl(μ-H)(CO)2{μ-(PhO)2PN(Et)P(OPh)2}2]; the structure of the last complex was determined by X-ray diffraction.  相似文献   

8.
Bis- and, in particular, tetra-substituted ditertiary phosphine and diphosphazane derivatives of [Fe2(CO)9] and [Ru2(CO)9], readily synthesised by reaction of the appropriate bidentate ligand with [Fe2(CO)9] and [Ru3(CO)12], respectively, are very susceptible to electrophilic attack by reagents such as halogens and protons; the solid state structure of one of the products [Fe2(μ-Br)(CO)4 {μ-(PhO)2PN(Et)P(OPh)2}2]PF6 has been determined by X-ray crystallography.  相似文献   

9.
Assembly of Tetranuclear Ruthenium Complexes with Planar Metal Core by Condensation of Two Diruthenium Units Using Bridging Ligands: Synthesis and Molecular Structure of [Ru4(CO)8{μ2-P(Cy)2}4] and [Ru4(CO)8{μ4-P(Cy)}2{μ2}2](Cy = Cyclohexyl) The dinuclear complexes [Ru2(CO)6{μ-P(Cy)2}2] ( 1 ) or [Ru2(CO)4{μ-(HCO2)}2{P(Cy)2H}2] ( 2 ) react in THF solution at 160° to give the tetranuclear complexes [Ru4(CO)8{μ2-P(Cy)2}4] ( 3 ) and [Ru4(CO)8{μ4-P(Cy)}2{μ2-P(Cy)2}2] ( 4 ), as well as the trinuclear complex [Ru3(CO)7(μ2-H){μ2-P(Cy)2}3] ( 5 ). If the reaction is performed at 200°, the bicapped tetranuclear species 4 is obtained in a higher yield, whereas 3 and 5 are formed in trace amounts only. The phenyl derivatives [Ru2(CO)6{μ-P(Ph)2}2] ( 6 ) or [Ru2(CO)4{μ-(EtCO2)}2{P(Ph)2H}2] ( 7 ) react in a similar manner to give only the complex [Ru4(CO)8{μ4-P(Ph)}2{μ2-P(Ph)2}2] ( 8 ), analogous to 4 . The molecular structure of 3 consists of a planar framework of four Ru-atoms, each Ru—Ru bond being bridged by a μ2-dicyclohexylphosphino ligand. The complex 4 represents a planar rectangular Ru core, both faces being capped by μ4-cyclohexylphosphinidene ligands and two opposite edges being bridged by μ2-dicyclohexylphosphino ligands.  相似文献   

10.
Treatment of [Ru2(CO)(μ-CO) {μ-C(O)C2Ph2} (η-C 5H5)2] with allene in toluene at 100°C displaces diphenylacetylene and produces [Ru(CO)(η-C5H5)-{η3-C3H4Ru(CO)2(η-C5H5)}]; upon protonation a 1-methylvinyl cation [Ru2(CO)2(μ-CO){μ-C(Me)CH2}(η-C5H5)2]+ is formed which undergoes nucleophillic attack by hydride to yield the μ-dimethylcarbene complex [Ru2(CO)2-(μ-CO)(μ-CMe2)(η-C5H5)2].  相似文献   

11.
Cyclic voltammetric studies in acetone and benzonitrile show that the oxidation of [M2(η-CO)(CO)4(η-R2PYPR2)2] (M  Fe, Y  CH2, R  Ph or Me; M  Fe, Y  NEt, R  OMe, PRri or OEt; M  Ru, Y  NEt, R  OPri) generally proceeds via an EEC mechanism, whereas oxidation of [Ru2(η-CO)(CO)4 {η-(MeO)2PN(Et)-P(OMe)2}2] proceeds via an ECE mechanism, for which removal of the second electron is easier than the first, giving rise to an overall 2e-transfer reaction. In both mechanisms the chemical step involves solvent attack.  相似文献   

12.
Abstract

The reaction of (CF3)2P-P(CF3)2 with [Ru3(CO)12] yielded compounds : [Ru14(CO)13{μ-P(CF3)2)2] (1), [Ru4(CO)14{μ-P(CF3)2}2] (2), and [Ru4(CO)11{μ-P(CF3)2}4] (3); reaction with [μ-H)4Ru4(CO)12] yielded (1) and [(μ-H)3Ru4(CO)12{μ-P(CF3)2}] (4). The reaction of (CF3)2PH with [Ru3(CO)12] yielded compounds (1) and (4) and compounds (1) and (2) using cluster : ligand ratios of 1:1 and 1:2 respectively. All the compounds have been characterised by X-ray crystallography; a schematic diagram of their structures is shown in Figure 1. The fluxional behaviour of the hydrides in (4) was studied using variable temperature 1H NMR spectroscopy (see Figure 2). The result of this study was used in the assignment of hydride positions of (4) in the solid state.  相似文献   

13.
The purple, phosphinidene-capped, phosphido-bridged triruthenium cluster [Ru3(μ3-PPh)(μ2-PPh2)2(CO)7] reacts readily with carbon monoxide, trimethylphosphite, sodium borohydride and diphenylacetylene under mild conditions to afford product mixtures from which [Ru3(μ-PPh)(μ2-PPh2)2(CO)7+n] (n = 1, 2 or 3), [Ru3(μ3-PPh)(μ2-PPh2)2(CO)6{P(OMe)3}], [Ru3(μ3-η3-PhPCPhCPh)(μ2-PPh2)2(CO)6], respectively, can be isolated. The structure of [Ru3(μ3-PPh)(μ2-PPh2)2(CO)6{P(OMe)3}] has been established X-ray crystallographically.  相似文献   

14.
The complexes [Ru2(CO)2(μ-CO)(μ-CMe)(η-C5H5)2]? and [Ru2CO2(μ-CO)(μ-CCH2)(η-C5H5)2] react together to give [{Ru2CO)3(η-C5H5)2}2(μ-CMeCHCH)]+ and [{Ru3(CO)3(η-C5H5)3}(μ-CCH2CHC){Ru2(CO)3(η-C5H5)2}], each characterised by X-ray diffraction. The former results from ethylidyne-vinylidene linking followed by an alkylidyne to vinyl rearrangement.  相似文献   

15.
The complete sequence of reactions in the base‐promoted reduction of [{RuII(CO)3Cl2}2] to [RuI2(CO)4]2+ has been unraveled. Several μ‐OH, μ:κ2‐CO2H‐bridged diruthenium(II) complexes have been synthesized; they are the direct results of the nucleophilic activation of metal‐coordinated carbonyls by hydroxides. The isolated compounds are [Ru2(CO)4(μ:κ2‐C,O‐CO2H)2(μ‐OH)(NPF‐Am)2][PF6] ( 1 ; NPF‐Am=2‐amino‐5,7‐trifluoromethyl‐1,8‐naphthyridine) and [Ru2(CO)4(μ:κ2‐C,O‐CO2H)(μ‐OH)(NP‐Me2)2][BF4]2 ( 2 ), secured by the applications of naphthyridine derivatives. In the absence of any capping ligand, a tetranuclear complex [Ru4(CO)8(H2O)2(μ3‐OH)2(μ:κ2‐C,O‐CO2H)4][CF3SO3]2 ( 3 ) is isolated. The bridging hydroxido ligand in 1 is readily replaced by a π‐donor chlorido ligand, which results in [Ru2(CO)4(μ:κ2‐C,O‐CO2H)2(μ‐Cl)(NP‐PhOMe)2][BF4] ( 4 ). The production of [Ru2(CO)4]2+ has been attributed to the thermally induced decarboxylation of a bis(hydroxycarbonyl)–diruthenium(II) complex to a dihydrido–diruthenium(II) species, followed by dinuclear reductive elimination of molecular hydrogen with the concomitant formation of the RuI? RuI single bond. This work was originally instituted to find a reliable synthetic protocol for the [Ru2(CO)4(CH3CN)6]2+ precursor. It is herein prescribed that at least four equivalents of base, complete removal of chlorido ligands by TlI salts, and heating at reflux in acetonitrile for a period of four hours are the conditions for the optimal conversion. Premature quenching of the reaction resulted in the isolation of a trinuclear RuI2RuII complex [{Ru(NP‐Am)2(CO)}{Ru2(NP‐Am)2(CO)2(μ‐CO)2}(μ3:κ3‐C,O,O′‐CO2)][BF4]2 ( 6 ). These unprecedented diruthenium compounds are the dinuclear congeners of the water–gas shift (WGS) intermediates. The possibility of a dinuclear pathway eliminates the inherent contradiction of pH demands in the WGS catalytic cycle in an alkaline medium. A cooperative binuclear elimination could be a viable route for hydrogen production in WGS chemistry.  相似文献   

16.
Reactions of Ru3(CO)12 with diphosphazane monoselenides Ph2PN(R)P(Se)Ph2 [R = (S)-∗CHMePh (L4), R = CHMe2 (L5)] yield mainly the selenium bicapped tetraruthenium clusters [Ru4(μ4-Se)2(μ-CO)(CO)8{μ-P,P-Ph2PN(R)PPh2}] (1, 3). The selenium monocapped triruthenium cluster [Ru3(μ3-Se)(μsb-CO)(CO)7{κ2-P,P-Ph2PN((S)-∗CHMePh)PPh2}] (2) is obtained only in the case of L4. An analogous reaction of the diphosphazane monosulfide (PhO)2PN(Me)P(S)(OPh)2 (L6) that bears a strong π-acceptor phosphorus shows a different reactivity pattern to yield the triruthenium clusters, [Ru3(μ3-S)(μ3-CO)(CO)7{μ-P,P-(PhO)2PN(Me)P(OPh)2}] (9) (single sulfur transfer product) and [Ru3(μ3-S)2(CO)5{κ2-P,P-(PhO)2PN(Me)P(OPh)2}{μ-P,P-(PhO)2PN(Me)P(OPh)2}] (10) (double sulfur transfer product). The reactions of diphosphazane dichalcogenides with Ru3(CO)12 yield the chalcogen bicapped tetraruthenium clusters [Ru4(μ4-E)2(μ-CO)(CO)8{μ-P,P-Ph2PN(R)PPh2}] [R = (S)-∗CHMePh, E = S (6); R = CHMe2, E = S (7); R = CHMe2, E = Se (3)]. Such a tetraruthenium cluster [Ru4(μ4-S)2(μ- CO)(CO)8{μ-P,P-(PhO)2PN(Me)P(OPh)2}] (11) is also obtained in small quantities during crystallization of cluster 9. The dynamic behavior of cluster 10 in solution is probed by NMR studies. The structural data for clusters 7, 9, 10 and 11 are compared and discussed.  相似文献   

17.
Reaction of Ru3(μ-dppm)(CO)10 [dppm = bis(diphenylphosphino)methane] with one equivalent of dppa [dppa = bis(diphenylphosphino)acetylene] afforded Ru3(μ-dppm)(CO)9(η1-dppa) which possesses a monodentate dppa ligand,an X-ray structural study revealing that all phosphorus donor atoms are arranged in equatorial coordination sites with respect to the triruthenium cluster plane.Reaction of Ru3(CO)9(NCMe)3 with excess dppa afforded fair yields of Ru3(CO)9(η1-dppa)3,which possesses three monodentate dppa ligands.Reaction of three equivalents of Ru3(μ-dppm)(CO)9(η1-dppa) with Ru3(CO)9(NCMe)3 or reaction of Ru3(CO)9(η1-dppa)3 with excess Ru3(μ-dppm)(CO)10 afforded low yields of the dodecanuclear first-generation dendrimer Ru3(CO)9{PPh2C2PPh2Ru3(μ-dppm)(CO)9}3.Reaction of WIr3(μ-CO)3(CO)8(η-C5Me5) with excess Ru3(μ-dppm)(CO)9(η1-dppa) afforded fair yields of the decanuclear dppa-bridged tri-cluster WIr3(CO)9{PPh2C2PPh2Ru3(μ-dppm)(CO)9}2(η-C5Me5).  相似文献   

18.
The cationic cluster complexes [Ru3(μ‐H)(μ‐κ2N,C‐L1 Me)(CO)10]+ ( 1 +; HL1 Me=N‐methylpyrazinium), [Ru3(μ‐H)(μ‐κ2N,C‐L2 Me)(CO)10]+ ( 2 +; HL2 Me=N‐methylquinoxalinium), and [Ru3(μ‐H)(μ‐κ2‐N,C‐L3 Me)(CO)10]+ ( 3 +; HL3 Me=N‐methyl‐1,5‐naphthyridinium), which contain cationic N‐heterocyclic ligands, undergo one‐electron reduction processes to become short lived, ligand‐centered, trinuclear, radical species ( 1 – 3 ) that end in the formation of an intermolecular C? C bond between the ligands of two such radicals, thus leading to neutral hexanuclear derivatives. These dimerization processes are selective, in the sense that they only occur through the exo face of the bridging ligands of trinuclear enantiomers of the same configuration, as they only afford hexanuclear dimers with rac structures (C2 symmetry). The following are the dimeric products that have been isolated by using cobaltocene as reducing agent: [Ru6(μ‐H)2{μ6‐κ4N2,C2‐(L1 Me)2}(CO)18] ( 5 ; from 1 +), [Ru6(μ‐H)2{μ6‐κ4N2,C2‐(L2 Me)2}(CO)18] ( 6 ; from 2 +), and [Ru6(μ‐H)2{μ4‐κ8N2,C6‐(L3 Me)2}(CO)18] ( 7 ; from 3 +). The structures of the final hexanuclear products depend on the N‐heterocyclic ligand attached to the starting materials. Thus, although both trinuclear subunits of 5 and 6 are face‐capped by their bridging ligands, the coordination mode of the ligand of 5 is different from that of the ligand of 6 . The trinuclear subunits of 7 are edge‐bridged by its bridging ligand. In the presence of moisture, the reduction of 3 + with cobaltocene also affords a trinuclear derivative, [Ru3(μ‐H)(μ‐κ2N,C‐L3′ Me)(CO)10] ( 8 ), whose bridging ligand (L3′ Me) results from the formal substitution of an oxygen atom for the hydrogen atom (as a proton) that in 3 + is attached to the C6 carbon atom of its heterocyclic ligand. The results have been rationalized with the help of electrochemical measurements and DFT calculations, which have also shed light on the nature of the odd‐electron species, 1 – 3 , and on the regioselectivity of their dimerization processes. It seems that the sort of coupling reactions described herein requires cationic complexes with ligand‐based LUMOs.  相似文献   

19.
Treatment of VO(acac)2 with the facial-tridentate organometallic ligand [η-CpCo{P(O)(OEt)2}3]? affords a new binuclear compound [η-CpCo{P(O)(OEt)2}3VO(acac)] (I). This compound undergoes protonation with HPF6 in the presence of 1,10-phenanthroline (phen), or 2,2′-bipyridyl (bipy), to yield binuclear cationic derivatives [η-CpCo{P(O)(OEt)2}3VO(phen))]+PF6? (II), and [η-CpCo{P(O)(OEth)2}3VO(bipy)]+PF6? (III). The X-ray crystal structure determination and full characterization of I has been performed. The catalytic oxygenation and oxygen transfer to 3,5-di-t-butylcatechol in the presence of I, II+, or III+ complexes is reported.  相似文献   

20.
Proton dissociation of an aqua‐Ru‐quinone complex, [Ru(trpy)(q)(OH2)]2+ (trpy = 2,2′ : 6′,2″‐terpyridine, q = 3,5‐di‐t‐butylquinone) proceeded in two steps (pKa = 5.5 and ca. 10.5). The first step simply produced [Ru(trpy)(q)(OH)]+, while the second one gave an unusual oxyl radical complex, [Ru(trpy)(sq)(O?.)]0 (sq = 3,5‐di‐t‐butylsemiquinone), owing to an intramolecular electron transfer from the resultant O2? to q. A dinuclear Ru complex bridged by an anthracene framework, [Ru2(btpyan)(q)2(OH)2]2+ (btpyan = 1,8‐bis(2,2′‐terpyridyl)anthracene), was prepared to place two Ru(trpy)(q)(OH) groups at a close distance. Deprotonation of the two hydroxy protons of [Ru2(btpyan)(q)2(OH)2]2+ generated two oxyl radical Ru‐O?. groups, which worked as a precursor for O2 evolution in the oxidation of water. The [Ru2(btpyan)(q)2(OH)2](SbF6)2 modified ITO electrode effectively catalyzed four‐electron oxidation of water to evolve O2 (TON = 33500) under electrolysis at +1.70 V in H2O (pH 4.0). Various physical measurements and DFT calculations indicated that a radical coupling between two Ru(sq)(O?.) groups forms a (cat)Ru‐O‐O‐Ru(sq) (cat = 3,5‐di‐t‐butylcathechol) framework with a μ‐superoxo bond. Successive removal of four electrons from the cat, sq, and superoxo groups of [Ru2(btpyan)(cat)(sq)(μ‐O2?)]0 assisted with an attack of two water (or OH?) to Ru centers, which causes smooth O2 evolution with regeneration of [Ru2(btpyan)(q)2(OH)2]2+. Deprotonation of an Ru‐quinone‐ammonia complex also gave the corresponding Ru‐semiquinone‐aminyl radical. The oxidized form of the latter showed a high catalytic activity towards the oxidation of methanol in the presence of base. Three complexes, [Ru(bpy)2(CO)2]2+, [Ru(bpy)2(CO)(C(O)OH)]+, and [Ru(bpy)2(CO)(CO2)]0 exist as an equilibrium mixture in water. Treatment of [Ru(bpy)2(CO)2]2+ with BH4? gave [Ru(bpy)2(CO)(C(O)H)]+, [Ru(bpy)2(CO)(CH2OH)]+, and [Ru(bpy)2(CO)(OH2)]2+ with generation of CH3OH in aqueous conditions. Based on these results, a reasonable catalytic pathway from CO2 to CH3OH in electro‐ and photochemical CO2 reduction is proposed. A new pbn (pbn = 2‐pyridylbenzo[b]‐1,5‐naphthyridine) ligand was designed as a renewable hydride donor for the six‐electron reduction of CO2. A series of [Ru(bpy)3‐n(pbn)n]2+ (n = 1, 2, 3) complexes undergoes photochemical two‐ (n = 1), four‐ (n = 2), and six‐electron reductions (n = 3) under irradiation of visible light in the presence of N(CH2CH2OH)3. © 2009 The Japan Chemical Journal Forum and Wiley Periodicals, Inc. Chem Rec 9: 169–186; 2009: Published online in Wiley InterScience ( www.interscience.wiley.com ) DOI 10.1002/tcr.200800039  相似文献   

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