共查询到20条相似文献,搜索用时 15 毫秒
1.
Padavattan Govindaswamy Bruno Therrien Petr Štěpni?ka Ji?í Ludvík 《Journal of organometallic chemistry》2007,692(17):3664-3675
The mononuclear cations [(η5-C5Me5)RhCl(bpym)]+ (1), [(η5-C5Me5)IrCl(bpym)]+ (2), [(η6-p-PriC6H4Me)RuCl(bpym)]+ (3) and [(η6-C6Me6)RuCl(bpym)]+ (4) as well as the dinuclear dications [{(η5-C5Me5)RhCl}2(bpym)]2+ (5), [{(η5-C5Me5)IrCl}2(bpym)]2+ (6), [{(η6-p-PriC6H4Me)RuCl}2(bpym)]2+ (7) and [{(η6-C6Me6)RuCl}2(bpym)]2+ (8) have been synthesised from 2,2′-bipyrimidine (bpym) and the corresponding chloro complexes [(η5-C5Me5)RhCl2]2, [(η5-C5Me5)IrCl2]2, [(η6-PriC6H4Me)RuCl2]2 and [(η6-C6Me6)RuCl2]2, respectively. The X-ray crystal structure analyses of [3][PF6], [5][PF6]2, [6][CF3SO3]2 and [7][PF6]2 reveal a typical piano-stool geometry around the metal centres; in the dinuclear complexes the chloro ligands attached to the two metal centres are found to be, with respect to each other, cis oriented for 5 and 6 but trans for 7. The electrochemical behaviour of 1-8 has been studied by voltammetric methods. In addition, the catalytic potential of 1-8 for transfer hydrogenation reactions in aqueous solution has been evaluated: All complexes catalyse the reaction of acetophenone with formic acid to give phenylethanol and carbon dioxide. For both the mononuclear and dinuclear series the best results were obtained (50 °C, pH 4) with rhodium complexes, giving turnover frequencies of 10.5 h−1 for 1 and 19 h−1 for 5. 相似文献
2.
The mononuclear cations of the general formula [(η6-arene)RuCl(dpqMe2)]+ (dpqMe2 = 6,7-dimethyl-2,3-di(pyridine-2-yl)quinoxaline; arene = C6H6, 1; C6H5Me, 2; p-PriC6H4Me, 3; C6Me6, 4) as well as the dinuclear dications [(η6-arene)2Ru2Cl2(μ-dpqMe2)]2+ (arene = C6H6, 5; C6H5Me, 6; p-PriC6H4Me, 7; C6Me6, 8) have been synthesised from 6,7-dimethyl-2,3-di(pyridine-2-yl)quinoxaline (dpqMe2) and the corresponding chloro complexes [(η6-C6H6)Ru(μ-Cl)Cl]2, [(η6-C6H5Me)Ru(μ-Cl)Cl]2, [(η6-p-PriC6H4Me)Ru(μ-Cl)Cl]2 and [(η6-C6Me6)Ru(μ-Cl)Cl]2, respectively. The X-ray crystal structure analyses of [1][PF6], [3][PF6] and [6][PF6]2 reveal a typical piano-stool geometry around the metal centre; in the dinuclear complexes the two chloro ligands, with respect to each other, are found to be trans oriented. 相似文献
3.
A series of neutral pyridine-based organochalcogen ligands, 2,6-bis(1-methylimidazole-2-thione)pyridine (Bmtp), 2,6-bis(1-isopropylimidazole-2-thione)pyridine (Bptp), and 2,6-bis(1-tert-butylimidazole-2-thione)pyridine (Bbtp) have been synthesized and characterized. Reactions of [Cp*M(μ-Cl)Cl]2 (Cp* = η5-pentamethylcyclopentadienyl, M = Ir, Rh) with three pyridine-based organochalcogen ligands result in the formation of the complexes Cp*M(L)Cl2 (M = Ir, L = Bmtp, 1a·Cl2; M = Rh, L = Bmtp, 1b·Cl2; M = Ir, L = Bptp, 2a·Cl2; M = Rh, L = Bptp, 2b·Cl2; M = Ir, L = Bbtp, 3a·Cl2; M = Rh, L = Bbtp, 3b·Cl2), respectively. All compounds have been characterized by elemental analysis, NMR and IR spectra. The molecular structures of Bbtp, 1a·Cl2, 1b·Cl2, 2b·Cl2 and 3b·Cl2 have been determined by X-ray crystallography. 相似文献
4.
Mono- and dinuclear ruthenium(II) complexes of six bridging ligands that contain a central arene (phenyl, naphthalenyl or biphenyl) core to which are attached two di-2-pyridylamine groups have been prepared. These complexes possess six-membered chelate rings. Full assignments of their 1H NMR spectra are described which provides insight into the comformations of the ligands in these complexes. The extent of metal–metal communication in the dinuclear complexes was probed by electrochemical measurements and related to metal–metal distances. 相似文献
5.
Bruno Therrien Julien Freudenreich Sergey S. Shapovalov Laurent Plasseraud 《Journal of organometallic chemistry》2010,695(3):409-1919
A series of neutral, anionic and cationic arene ruthenium complexes containing the trichlorostannyl ligand have been synthesised from SnCl2 and the corresponding arene ruthenium dichloride dimers [(η6-arene)Ru(μ2-Cl)Cl]2 (arene = C6H6, PriC6H4Me). While the reaction with triphenylphosphine and stannous chloride only gives the neutral mono(trichlorostannyl) complexes [(η6-C6H6)Ru(PPh3)(SnCl3)Cl] (1) and [(η6-PriC6H4Me)Ru(PPh3)(SnCl3)Cl] (2), the neutral di(trichlorostannyl) complex [(η6-PriC6H4Me)Ru(NCPh)(SnCl3)2] (3) could be obtained for the para-cymene derivative with benzonitrile as additional ligand. By contrast, the analogous reaction with the benzene derivative leads to a salt composed of the cationic mono(trichlorostannyl) complex [(η6-C6H6)Ru(NCPh)2(SnCl3)]+ (5) and of the anionic tris(trichlorostannyl) complex [(η6-C6H6)Ru(SnCl3)3]− (6). On the other hand, [(η6-PriC6H4Me)Ru(μ2-Cl)Cl]2 reacts with SnCl2 and hexamethylenetetramine hydrochloride or 18-crown-6 to give the anionic di(trichlorostannyl) complex [(η6-PriC6H4Me)Ru(SnCl3)2Cl]− (4), isolated as the hexamethylenetetrammonium salt or the chloro-tin 18-crown-6 salt. The single-crystal X-ray structure analyses of 1, 2, [(CH2)6N4H][4], [(18-crown-6)SnCl][4] and [5][6] reveal for all complexes a pseudo-tetrahedral piano-stool geometry with ruthenium-tin bonds ranging from 2.56 (anionic complexes) to 2.60 Å (cationic complex). 相似文献
6.
Murat Aydemir Nermin Meric Bahattin Gümgüm Ertan ?ahin 《Journal of organometallic chemistry》2011,696(13):2584-2588
Reaction of Ph2PNHCH2-C4H3S with [Ru(η6-p-cymene)(μ-Cl)Cl]2, [Ru(η6-benzene)(μ-Cl)Cl]2, [Rh(μ-Cl)(cod)]2 and [Ir(η5-C5Me5)(μ-Cl)Cl]2 yields complexes [Ru(Ph2PNHCH2-C4H3S)(η6-p-cymene)Cl2], 1, [Ru(Ph2PNHCH2-C4H3S)(η6-benzene)Cl2], 2, [Rh(Ph2PNHCH2-C4H3S)(cod)Cl], 3 and [Ir(Ph2PNHCH2-C4H3S)(η5-C5Me5)Cl2], 4, respectively. All complexes were isolated from the reaction solution and fully characterized by analytical and spectroscopic methods. The structure of [Ru(Ph2PNHCH2-C4H3S)(η6-benzene)Cl2], 2 was also determined by single crystal X-ray diffraction. 1-4 are suitable precursors forming highly active catalyst in the transfer hydrogenation of a variety of simple ketones. Notably, the catalysts obtained by using the ruthenium complexes [Ru(Ph2PNHCH2-C4H3S)(η6-p-cymene)Cl2], 1 and [Ru(Ph2PNHCH2-C4H3S)(η6-benzene)Cl2], 2 are much more active in the transfer hydrogenation converting the carbonyls to the corresponding alcohols in 98-99% yields (TOF ≤ 200 h−1) in comparison to analogous rhodium and iridium complexes. 相似文献
7.
Jérôme Canivet 《Journal of organometallic chemistry》2005,690(13):3202-3211
The monocationic chloro complexes containing chelating 1,10-phenanthroline (phen) ligands [(arene)Ru(N∩N)Cl]+ (1: arene = C6H6, N∩N = phen; 2: arene = C6H6, N∩N = 5-NO2-phen; 3: arene = p-MeC6H4Pri, N∩N = phen; 4: arene = p-MeC6H4Pri, N∩N = 5-NO2-phen; 5: arene = C6Me6, N∩N = phen; 6: arene = C6Me6, N∩N = 5-NO2-phen; 7: arene = C6Me6, N∩N = 5-NH2-phen) have been prepared and characterised as the chloride salts. Hydrolysis of these chloro complexes in aqueous solution gave, upon precipitation of silver chloride, the corresponding dicationic aqua complexes [(arene)Ru(N∩N)(OH2)]2+ (8: arene = C6H6, N∩N = phen; 9: arene = C6H6, N∩N = 5-NO2-phen; 10: arene = p-MeC6H4Pri, N∩N = phen; 11: arene = p-MeC6H4Pri, N∩N = 5-NO2-phen; 12: arene = C6Me6, N∩N = phen; 13: arene = C6Me6, N∩N = 5-NO2-phen; 14: arene = C6Me6, N∩N = 5-NH2-phen), which have been isolated and characterised as the tetrafluoroborate salts. The catalytic potential of the aqua complexes 8-14 for transfer hydrogenation reactions in aqueous solution has been studied: complexes 12 and 14 catalyse the reaction of acetophenone with formic acid to give phenylethanol and carbon dioxide with turnover numbers around 200 (80 °C, 7 h). In the case of 12, it was possible to observe the postulated hydrido complex [(C6Me6)Ru(phen)H]+ (15) in the reaction with sodium borohydride; 15 has been characterised as the tetrafluoroborate salt, the isolated product [15]BF4, however, being impure. The molecular structures of [(C6Me6)Ru(phen)Cl]+ (1) and [(C6Me6)Ru(phen)(OH2)]2+ (12) have been determined by single-crystal X-ray structure analysis of [1]Cl and [12](BF4)2. 相似文献
8.
Interaction of [Ru(NO)Cl3(PPh3)2] with K[N(R2PS)2] in refluxing N,N-dimethylformamide afforded trans-[Ru(NO)Cl{N(R2PS)2}2] (R = Ph (1), Pri (2)). Reaction of [Ru(NO)Cl3(PPh3)2] with K[N(Ph2PSe)2] led to formation of a mixture of trans-[Ru(NO)Cl{N(Ph2PSe)2}2] (3) and trans-[Ru(NO)Cl{N(Ph2PSe)2}{Ph2P(Se)NPPh2}] (4). Reaction of Ru(NO)Cl3 · xH2O with K[N(Ph2PO)2] afforded cis-[Ru(NO)(Cl){N(Ph2PO)2}2] (5). Treatment of [Rh(NO)Cl2(PPh3)2] with K[N(R2PQ)2] gave Rh(NO){N(R2PQ)2}2] (R = Ph, Q = S (6) or Se (7); R = Pri, Q = S (8) or Se (9)). Protonation of 8 with HBF4 led to formation of trans-[Rh(NO)Cl{HN(Pri2PS)2}2][BF4]2 (10). X-ray diffraction studies revealed that the nitrosyl ligands in 2 and 4 are linear, whereas that in 9 is bent with the Rh–N–O bond angle of 125.7(3)°. 相似文献
9.
Kota Thirumala Prasad Kollipara Mohan Rao 《Journal of organometallic chemistry》2008,693(18):3049-3056
Reactions of the dinuclear complexes [(η6-arene)Ru(μ-Cl)Cl]2 (arene = C6H6, p-iPrC6H4Me) and [(η5-C5Me5)M(μ-Cl)Cl]2 (M = Rh, Ir) with 2-substituted-1,8-naphthyridine ligands, 2-(2-pyridyl)-1,8-naphthyridine (pyNp), 2-(2-thiazolyl)-1,8-naphthyridine (tzNp) and 2-(2-furyl)-1,8-naphthyridine (fuNp), lead to the formation of the mononuclear cationic complexes [(η6-C6H6)Ru(L)Cl]+ {L = pyNp (1); tzNp (2); fuNp (3)}, [(η6-p-iPrC6H4Me)Ru(L)Cl]+ {L = pyNp (4); tzNp (5); fuNp (6)}, [(η5-C5Me5)Rh(L)Cl]+ {L = pyNp (7); tzNp (8); fuNp (9)} and [(η5-C5Me5)Ir(L)Cl]+ {L = pyNp (10); tzNp (11); fuNp (12)}. All these complexes are isolated as chloro or hexafluorophosphate salts and characterized by IR, NMR, mass spectrometry and UV/Vis spectroscopy. The molecular structures of [1]Cl, [2]PF6, [4]PF6, [5]PF6 and [10]PF6 have been established by single crystal X-ray structure analysis. 相似文献
10.
Ying-Feng Han 《Journal of organometallic chemistry》2008,693(3):546-550
Reactions of [M(Cp∗)Cl(μ-Cl)]2 (M = Ir(1a); M = Rh(1b)) with tridentate ligands tpt (tpt = 2,4,6-tripyridyl-1,3,5-triazine) gave the corresponding trinuclear complexes [M3(Cp∗)3(μ3-4-tpt-κN)Cl6] (M = Ir(2a); M = Rh(2b)), which can be converted into hexanuclear complexes [M6(Cp∗)6(μ3-4-tpt-κN)2(μ-Cl)6](O3SCF3)6 (M = Ir(3a); M = Rh(3b)) by treatment with AgO3SCF3, respectively. X-ray of 3b revealed that each of six pentamethylcyclopentadienyl metal moieties was connected by two μ-Cl-bridged atoms and a tridentate ligand to construct a cation triangular metallo-prism cavity with the volume of about 273 Å3 based on the distance of the two triazine moieties is 3.62 Å. 相似文献
11.
Reactions of 0.5 eq. of the dinuclear complexes [(η6-arene)Ru(μ-Cl)Cl]2 (arene = η6-C6H6, η6-p-iPrC6H4Me) and [(Cp∗)M(μ-Cl)Cl]2 (M = Rh, Ir; Cp∗ = η5-C5Me5) with 4,6-disubstituted pyrazolyl-pyrimidine ligands (L) viz. 4,6-bis(pyrazolyl)pyrimidine (L1), 4,6-bis(3-methyl-pyrazolyl)pyrimidine (L2), 4,6-bis(3,5-dimethyl-pyrazolyl)pyrimidine (L3) lead to the formation of the cationic mononuclear complexes [(η6-C6H6)Ru(L)Cl]+ (L = L1, 1; L2, 2; L3, 3), [(η6-p-iPrC6H4Me)Ru(L)Cl]+ (L = L1, 4; L2, 5; L3, 6), [(Cp∗)Rh(L)Cl]+ (L = L1, 7; L2, 8; L3, 9) and [(Cp∗)Ir(L)Cl]+ (L = L1, 10; L2, 11; L3, 12), while reactions with 1.0 eq. of the dinuclear complexes [(η6-arene)Ru(μ-Cl)Cl]2 and [(Cp∗)M(μ-Cl)Cl]2 give rise to the dicationic dinuclear complexes [{(η6-C6H6)RuCl}2(L)]2+ (L = L1, 13; L2, 14; L3, 15), [{(η6-p-iPrC6H4Me)RuCl}2(L)]2+ (L = L1, 16; L2, 17; L3, 18), [{(Cp∗)RhCl}2(L)]2+ (L = L1, 19; L2, 20; L3, 21) and [{(Cp∗)IrCl}2(L)]2+ (L = L1 22; L2, 23; L3 24). The molecular structures of [3]PF6, [6]PF6, [7]PF6 and [18](PF6)2 have been established by single crystal X-ray structure analysis. 相似文献
12.
Hui Wang Xu-Qing Guo Rui Zhong Yue-Jian Lin Peng-Cheng Zhang Xiu-Feng Hou 《Journal of organometallic chemistry》2009,694(20):3362-3368
Neutral trinuclear metallomacrocycles, [Cp*RhCl(μ-4-PyS)]3 (3) and [Cp*IrCl(μ-4-PyS)]3 (4) [Cp* = pentamethylcyclopentadienyl, 4-PyS = 4-pyridinethiolate], have been synthesized by self-assembly reactions of [Cp*RhCl2]2 (1) and [Cp*IrCl2]2 (2) with lithium 4-pyridinethiolate, respectively. In situ reaction of complex 3 with three equivalent of lithium 4-pyridinethiolate resulted in [Cp*Rh(μ-4-PyS)(4-PyS)]3 (5) containing both skeleton and pendent 4-PyS groups. Chelating coordination of 2-pyridinethiolate broke down the triangular skeleton to give mononuclear metalloligands Cp*Rh(2-PyS)(4-PyS) (6) and Cp*Ir(2-PyS)(4-PyS) (7) [2-PyS = 2-pyridinethiolate], which could also be synthesized from Cp*RhCl(2-PyS) (10) and Cp*IrCl(2-PyS) (11) with lithium 4-pyridinethiolate. The coordination reactions of 6 with complexes 1 and 2 gave dinuclear complexes [Cp*Rh(2-PyS)(μ-4-PyS)][Cp*RhCl2] (8) and [Cp*Rh(2-PyS)(μ-4-PyS)][Cp*IrCl2] (9), respectively. Molecular structures of 3, 4, 6 and 11 were determined by X-ray crystallographic analysis. All the complexes have been well characterized by elemental analysis, NMR and IR spectra. 相似文献
13.
The dinuclear dichloro complexes [(η6-arene)2Ru2(μ-Cl)2Cl2] and [(η5-C5Me5)2M2(μ-Cl)2Cl2] react with 2-(pyridine-2-yl)thiazole (pyTz) to afford the cationic complexes [(η6-arene)Ru(pyTz)Cl]+ (arene = C6H61, p-iPrC6H4Me 2 or C6Me63) and [(η5-C5Me5)M(pyTz)Cl]+ (M = Rh 4 or Ir 5), isolated as the chloride salts. The reaction of 2 and 3 with SnCl2 leads to the dinuclear heterometallic trichlorostannyl derivatives [(η6-p-iPrC6H4Me)Ru(pyTz)(SnCl3)]+ (6) and [(η6-C6Me6)Ru(pyTz)(SnCl3)]+ (7), respectively, also isolated as the chloride salts. The molecular structures of 4, 5 and 7 have been established by single-crystal X-ray structure analyses of the corresponding hexafluorophosphate salts. The in vitro anticancer activities of the metal complexes on human ovarian cancer cell lines A2780 and A2780cisR (cisplatin-resistant), as well as their interactions with plasmid DNA and the model protein ubiquitin, have been investigated. 相似文献
14.
Reactions of [Cp*M(μ-Cl)Cl]2 (M = Ir, Rh; Cp* = η5-pentamethylcyclopentadienyl) with bi- or tri-dentate organochalcogen ligands Mbit (L1), Mbpit (L2), Mbbit (L3) and [TmMe]− (L4) (Mbit = 1,1′-methylenebis(3-methyl-imidazole-2-thione); Mbpit = 1,1′-methylene bis (3-iso-propyl-imidazole-2-thione), Mbbit = 1,1′-methylene bis (3-tert-butyl-imidazole-2-thione)) and [TmMe]− (TmMe = tris (2-mercapto-1-methylimidazolyl) borate) result in the formation of the 18-electron half-sandwich complexes [Cp*M(Mbit)Cl]Cl (M = Ir, 1a; M = Rh, 1b), [Cp*M(Mbpit)Cl]Cl (M = Ir, 2a; M = Rh, 2b), [Cp*M(Mbbit)Cl]Cl (M = Ir, 3a; M = Rh, 3b) and [Cp*M(TmMe)]Cl (M = Ir, 4a; M = Rh, 4b), respectively. All complexes have been characterized by elemental analysis, NMR and IR spectra. The molecular structures of 1a, 2b and 4a have been determined by X-ray crystallography. 相似文献
15.
Ir, Rh and Ru are separated from a large excess of platinum by extraction with isoamyl alcohol-isobutyl methyl ketone mixture. Graphite furnace atomic absorption spectrometry using the method of standard addition is then used to determine the metals with satisfactory precision and accuracy. 相似文献
16.
Stephen Costin 《Tetrahedron letters》2009,50(8):922-925
Novel amino-dithiaphospholane complexes of ruthenium, iridium, and rhodium were synthesized, and their properties were studied. Reaction of the new amino-dithiaphospholane (RS)2 (R = binaphthyl, R′ = CH2Ph, (rac)-4) with [RuCl2(p-cymene)]2 afforded [RuCl2(p-cymene)((rac)-4)] in 67% isolated yield. Similarly, the new amino-dithiaphospholanes (RS)2 (R = cyclohexyl, (rac)-7) and (RS)2 (R = phenyl, 9) gave upon reaction with [RhCl(CO)2]2 and [IrCp∗Cl2]2 the novel complexes [RhCl(CO)(L)2] and [IrCp∗Cl2(L)] (L = (rac)-7, 9) in 61-96% yields. The ruthenium complex is catalytically active for the etherification of propargylic alcohols with methanol and ethanol (8-48 h, 90 °C, 40-85% isolated yields). 相似文献
17.
Lianqing Chen Jingui Qin Jia Gao Dongge Ma 《Journal of organometallic chemistry》2006,691(16):3519-3530
Four new iridium(III) complexes 1-4, with 1,3,4-oxadiazole derivative as cyclometalated ligand for the first time, have been synthesized and structurally characterized by NMR, EA, MS and X-ray diffraction analysis (except 1). The stronger ligand field strength of the dithiolate ancillary ligands results in higher oxidation potentials and lower HOMO energy levels of complexes than acetylacetone. The absorption spectra of these complexes display low-energy metal-to-ligand charge transfer transition ranging from 350 to 500 nm. Complexes with dithiolate ancillary ligand emit at maximum wavelengths of ca. 500 nm, blue shifting 17 and 11 nm with respect to their counterpart with acetylacetone ligand. The electrophosphorescent devices with 2-4 as phosphorescent dopant in emitting layer have been fabricated. All devices have a low turn-on voltage in the range of 4.5 and 4.9 V. A high-efficiency green emission with maximum luminous efficiency of 5.28 cd/A at current density of 1.37 mA/cm2 and a maximum brightness of 2592 cd/m2 at 15.2 V has been achieved in device using 2 as emitter. 相似文献
18.
Manashi Panda Chayan Das Chen-Hsiung Hung Sreebrata Goswami 《Journal of Chemical Sciences》2007,119(1):3-9
Reactions of IrCl3·xH2O with the ligands, 2-[(phenylamino)phenylazo]pyridine (HL1a) and 2-[(p-tolylamino)phenylazo]pyridine (HL1b) produce [Ir(L1)2]Cl (L1 = L1a, [1]Cl and L1 = L1b, [2]Cl) along with many unidentified products. The iridium complexes have been characterized by various techniques such as X-ray
crystallography, mass spectrometry, 1H and 13C NMR, cyclic voltammetry and absorption studies. The complex [1]ClO4 crystallises in triclinic space group. The crystallographic data have been determined. Notably, the Ir-N (azo) lengths are
short (av. 1·9875(4) ?) as compared to the remaining four Ir-N lengths (av. 2·052(5) ?). There is significant degree of ligand
backbone conjugation in the coordinated ligands, which result in shortening of the C-N lengths on the other side of the middle
phenyl ring and also in lengthening of the diazo (N=N) lengths. The complexes display multiple low energy transitions ranging
between 1010 and 450 nm. These are electro active and show three reversible redox responses in the potential range, +1·5 V
to −1·5 V. The cathodic potential responses are ascribed as ligand reductions, while the redox process at the anodic potential
occurs at a mixed metal-ligand (HOMO) orbital. 相似文献
19.
Xia Meng 《Journal of organometallic chemistry》2008,693(15):2597-2602
A 18-electron complex Cp∗IrCl[o-C6H4N(C6H3-Me-p) (CHNC6H3-Me-p)] (Cp∗ = η5-pentamethylcyclopentadienyl) (1a) was obtained by the reaction of the lithium salt of o-C6H4N (C6H3-Me-p)(CHNHC6H3-Me-p) (L1) with [Cp∗IrCl(μ-Cl)]2 in toluene. However, when bulkier ligands (L2 = o-C6H4N(C6H3-Me-p)(CHNHC6H3-i-Me2-2,6), L3 = o-C6H4N(C6H3-Me-p) (CHNHC6H3-i-Pr2-2,6)) were employed in the same reaction, two 16-electron complexes {Cp∗Ir[o-C6H4N(C6H3-Me-p)(CHNC6H3-i-Me2-2,6)]}+Cl− (2b) and {Cp∗Ir[o-C6H4N(C6H3-Me-p)(CHNC6H3-i-Pr2-2,6)]}+Cl− (3b) were formed. A 16-electron complex {Cp∗Ir [o-C6H4N(C6H3-Me-p) (CHNC6H3-Me-p)]}+SO3 CF−3 (1b) bearing L1 could be achieved by the reaction of 1a with AgSO3CF3 in CH3CN solution. The molecular structures of 1a and 2b were determined by X-ray crystallography. Theoretical calculations of all the 18/16-electron species were performed to study their bonding characters and electronic properties. Electron donating effect of Cp∗ and steric effect of anilido-imine ligand were considered as major factors in the formation of coordinative unsaturated complexes 1b, 2b, 3b. 相似文献
20.
Thiago dos Santos FranciscoDayane C. de Oliveira Cruz Alzir A. BatistaAntonio G. Ferreira Javier EllenaÍcaro de S. Moreira Eduardo H.S. SousaIdalina M.M. de Carvalho Elisane LonghinottiIzaura C.N. Diógenes 《Polyhedron》2012,31(1):104-109
Phosphine ruthenate complexes containing the non-innocent ligands 4-chloro-1,2-phenylenediamine (opda-Cl) and 3,3′,4,4′-tetraamminebiphenyl (diopda) were synthesized and characterized by means of X-ray diffraction, electrochemistry, 31P{1H} NMR and electronic spectroscopies. Crystals of cis-[RuCl2(dppb)(bqdi-Cl)] complex were isolated as a mixture of two conformational isomers due to different positions of the chlorine atoms of the o-phenylene ligand in relation to the P1 atom of the phosphine moiety. 相似文献