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1.
Nicholson T Mahmood A Limpa-Amara N Salvarese N Takase MK Müller P Jones AG 《Inorganica chimica acta》2011,373(1):301-305
The reaction of the Tc(II) nitrosyl complex (Bu4N)[Tc(NO)Cl4] with di-(2-picolyl)(NEt)amine in methanol yields the neutral complex [Tc(NO)Cl(py-N(Et)-py)]. The reaction of the Tc(I) nitrosyl complex [Tc(NO)Cl2(HOMe)(PPh3)2] with this tridentate ligand yields cationic [Tc(NO)Cl(py-N(Et)-py)(PPh3)]Cl. These two complexes have been structurally characterized. The reaction of [Tc(NO)Cl2(HOMe)(PPh3)2] with the tetradentate ligand 1,4-bis-(2-pyridylmethyl)-1,4-diazobutane yields a mixture of products including cationic [Tc(NO)Cl(py-NH-NH-py)]Cl and cationic [Tc(NO)Cl(PPh3)(py-NH-NH∼py)]Cl, with a pyridyl terminus left dangling. 相似文献
2.
[Ru(H)(CO)(PPh3)2(α/β-NaiR)](ClO4) (3, 4) are synthesized by the reaction of [Ru(H)(Cl)(CO)(PPh3)3] with 1-alkyl-2-(naphthyl-α/β-azo)imidazole (α-NaiR (3); β-NaiR (4)). One of the complexes [Ru(H)(CO)(PPh3)2(α-NaiMe)](ClO4) (3a) has been structurally established by X-ray diffraction study. Upon addition of Cl2 saturated in MeCN to 3 or 4 gives [Ru(Cl)(CO)(α/β-NaiR)(PPh3)2](ClO4) (for α-NaiR (5); β-NaiR (6)), without affecting metal oxidation state, which were characterized by spectroscopic measurements. The redox property of the complexes is examined by cyclic voltammetry. 相似文献
3.
Shafqat Nadeem Saeed Ahmad Tahira Fazeelat Muhammad Khawar Rauf Sadia Siddiq Abdul Hameed 《Inorganica chimica acta》2010,363(13):3261-3269
Palladium(II) complexes with triphenylphosphine (PPh3) and thioamides of the general formulae, [Pd(L)2(PPh3)2]Cl2 and [Pd(L)2(PPh3)2] have been prepared and characterized by elemental analysis, IR and NMR (1H, 13C and 31P) methods, and two of them (trans-[Pd(PPh3)2(Dmtu)2]Cl2·(H2O)(CH3OH)0.5 (1) and trans-[Pd(PPh3)2(Mpy)2] (2)) by X-ray crystallography; where L = thiourea (Tu), methylthiourea (Metu), N,N′-dimethylthiourea (Dmtu), tetramethylthiourea (Tmtu), 2-mercaptopyridine (Mpy), 2-mercaptopyrimidine (Mpm) and thionicotinamide (Tna). The spectral data of the complexes are consistent with the sulfur coordination of thioamides to palladium(II). The crystal structures of the complexes show that (1) has ionic character consisting of [Pd(PPh3)2(Dmtu)2]+2 cations and uncoordinated Cl− ions, while (2) is a neutral complex with Mpy behaving as anionic thiolate ligand. The coordination environment around palladium in (2) is nearly regular square-planar, while in (1) the trans angles show significant distortions from 180°. The complexes were screened for antibacterial effects, brine shrimps lethality bioassay and antitumor activity. These complexes showed significant activities in most of the cases against the tested bacteria as compared to that of a standard drug. Their antitumor activity against prostate cancer cells (PC3) is comparable with doxorubicin, together with no cytotoxic effects in brine shrimps lethality bioassay study. 相似文献
4.
《Inorganica chimica acta》1987,126(1):95-97
The preparation of cationic rhodium complexes of the types [RhL(IQNO)2]ClO4 (L COD, COT and NBD) and [Rh(COD)(IQNO)L′]ClO4 (L′ = 4-NH2py, 4-NMe2py and PPh3) and the reactions of [Rh(COD)(IQNO)2]ClO4 with N- and P-donor ligands are described. 相似文献
5.
R. Prabhakaran R. Sivasamy R. Huang R. Karvembu K. Natarajan 《Inorganica chimica acta》2011,374(1):647-324
New Ni(II) thiosemicarbazone complexes containing triphenylphosphine namely [Ni(Sal-mtsc)(PPh3)](2) and [Ni(Nap-mtsc)(PPh3)] (3) (where Sal-mtsc = salicylaldehyde-N(4)-methylthiosemicarbazone and Nap-mtsc = 2-hydroxy-1-naphthaldehyde-N(4)-methylthiosemicarbazone) have been synthesised and characterized by elemental analysis, IR, electronic and 1H NMR spectroscopy. The crystal structures of the complexes have been determined by single crystal X-ray diffraction technique. In all the complexes the thiosemicarbazone ligand coordinated to nickel through ONS mode. The electrochemical behavior of the complexes has been investigated by using cyclic voltammetry in acetonitrile. The new complexes were subjected to test their DNA topoisomerase II inhibition efficiency. The complex [Ni(Nap-mtsc)(PPh3)] (3) showed 95% inhibition. The observed inhibition activity was found to be more potent than the activity of conventional standard Nalidixic acid. 相似文献
6.
Terrence L. Nicholson Ashfaq Mahmood Alan Davison Alun G. Jones 《Inorganica chimica acta》2011,365(1):484-486
The reaction of the Tc(I) complex [Tc(NO)Cl2(HOMe)(PPh3)2] with stoichiometric amounts of 2-mercatopyridine and a proton scavenger yields [Tc(NO)Cl(Spy)(PPh3)2] or [Tc(NO)(Spy)2(PPh3)], depending upon quantities of ligands employed. These two complexes have been structurally characterized. The small bite angles of the bidentate mercaptopyridine ligands cause significant deviation from octahedral coordination geometry. 相似文献
7.
Copper(II) cations coordinated with PMDTA (pentamethyldiethylenetriamine) and TMEDA (tetramethylethylenediamine) possess a high synthetic potential. The synthesis of these cations was carried out by metathesis reactions with silver salts. The cationic copper(II) complexes, [Cu(PMDTA)(Me2CO)Cl]+, [Cu(PMDTA)(H2O)Cl]+, [Cu(PMDTA)(DMF)]+, [Cu(PMDTA)Cl]+, [Cu(PMDTA)OAc]+, [Cu(PMDTA)(MeCN)2]2+, [Cu2(TMEDA)2Cl3]+ and [Cu(TMEDA)(MeCN)3]2+ were synthesised as PF6 salts, crystallised and characterised by single-crystal X-ray diffraction. 相似文献
8.
The reactivity of [Pt2(μ-S)2(PPh3)4] towards a range of nickel(II) complexes has been probed using electrospray ionisation mass spectrometry coupled with synthesis and characterisation in selected systems. Reaction of [Pt2(μ-S)2(PPh3)4] with [Ni(NCS)2(PPh3)2] gives [Pt2(μ-S)2(PPh3)4Ni(NCS)(PPh3)]+, isolated as its BPh4 − salt; the same product is obtained in the reaction of [Pt2(μ-S)2(PPh3)4] with [NiBr2(PPh3)2] and KNCS. An X-ray structure determination reveals the expected sulfide-bridged structure, with an N-bonded thiocyanate ligand and a square-planar coordination geometry about nickel. A range of nickel(II) complexes NiL2, containing β-diketonate, 8-hydroxyquinolinate, or salicylaldehyde oximate ligands react similarly, giving [Pt2(μ-S)2(PPh3)4NiL]+ cations. 相似文献
9.
Harry Adams 《Inorganica chimica acta》2010,363(1):173-178
Deprotonation of 4-mercapto-1,2-dithiole-3-thiones with NEt3 followed by reaction with [Ru(H)(Cl)(CO)(PPh3)3] affords virtually quantitative yields of turquoise [Ru(H)(RC3S4)(CO)(PPh3)2] (R = Ph, Mes) in which the heterocycle is bound as a bidentate uninegative ligand through the two exocyclic sulfur atoms. The presence of both possible isomers in each case is indicated by NMR spectroscopy. Reaction of the 4-mercapto-1,2-dithiole-3-thiones with [MoO2(acac)2] results in displacement of the acac ligands and formation of [MoO2(RC3S4)2]. The crystal structures of [Ru(H)(MesC3S4)(CO)(PPh3)2] and [MoO2(MesC3S4)2] have been determined. 相似文献
10.
《Inorganica chimica acta》1986,112(2):153-157
New complexes of the type cis-[MX2(PP′)] (M= Ni, Pd and Pt; X=Cl, Br, I or NCS and PP′=(m- FC6H4)2PCH2CH2PPh2 or (p-FC6H4)2PCH2CH2PPh2) have been synthesized and characterized on the basis of 31P{1H}NMR1H NMR, IR and UV spectroscopy, elemental analysis and magnetic susceptibility measurements. All these complexes are found to be low spin, diamagnetic and square planar. 31P{1H} spectra of these complexes exhibit extraordinarily large downfield coordination chemical shifts, J(31P31P′) and J(195pt31P) couplings are discussed. Ring contribution (ΔR) values for palladium and platinum complexes are calculated from 31P NMR data. 相似文献
11.
A family of complexes of Ni(II), 2-aminomethylpyridine (ampy) and tricyanomethanide (tcm) have been prepared and studied by IR, X-ray crystallography and variable temperature susceptibility. The complexes synthesized include [Ni(ampy)3](ClO4)2 (1), [Ni(ampy)3](tcm)(PF6) (2), [Ni(ampy)3](PF6)2 (3), [Ni(ampy)2(H2O)2]Cl2 (4), and [Ni(ampy)2(tcm)2] (5). No coordination polymers of tcm were obtained. The magnetic behavior of the complexes, and the known material [Ni(ampy)(NO3)2], is dominated by single-ion anisotropy effects with D-values in the range of −2 to −12 K, although some compounds show a weak antiferromagnetic interaction. 相似文献
12.
《Inorganica chimica acta》1986,112(2):205-208
The displacement of tetrahydrothiophen (tht) in [Au(tht)2]ClO4 by neutral ligands gives bi-, tri- or tetra-coordinated complexes of the type [Au- (py)2]ClO4, [(tht)AuPPh2NHPPh2Au(tht)] (ClO4)2, [LAu(LL)]ClO4 (L=tht, PPh3; LL=bipy, phen) or [AuL4]ClO4 (L=PPh3, AsPh3 or SbPh3). The reaction between [Au(tht)2]ClO4 and (Bu4N)[AuR2] (R=C6F5, C6Cl5, C6F3H2) yields RAu(tht). The 197Au Mössbauer spectrum of [LAu(LL)]ClO4 establishes it as a tri-coordinated species, albeit with an asymmetrically linked bidentate ligand. 相似文献
13.
Chong Shik Chin 《Inorganica chimica acta》2004,357(10):3064-3070
Phosphorus-carbon bond is formed via: (i) the apparent HCCH insertion into Ir-P bond to produce Ir-CHCH-PPh3 group and (ii) the activation of the ring-methyl group of the coordinated Cp* (C5Me5 −) to produce Ir(η5-C5Me4CH2-PPh3) group from reactions of iridium(III)-Cp* complexes, [Cp*IrL3]n+ (n=1, 2); Cp*=C5Me5 −; L3=Cl(PPh3)2 (3), (CH3CN)3 (5). The following new P-C bond containing iridium(III) complexes have been prepared: [Cp*Ir(-CHCH-PPh3)Cl(PPh3)]+ (4) from 3 with HCCH; [Ir(η5-C5Me4CH2-PPh3)(H)(PPh3)2]2+ (6) from 5 with PPh3; [Cp*Ir(-CHCH-PPh3)2(PPh3)]2+ (7) from 5 with HCCH and PPh3; [Ir(η5-C5Me4CH2-PPh3)(-CHCH-PPh3)Cl(PPh3)]2+ (8) from [Ir(η5-C5Me4CH2-PPh3)(Cl)(PPh3)2]2+ (6-Cl) with HCCH; [Ir(η5-C5Me3(1,3-CH2-PPh3)2(H)(PPh3)2)]3+ (10) from [Ir(η5-C5Me4CH2-PPh3)(NCCH3)2(PPh3)]3+ (9) with PPh3; [Ir(η5-C5Me4CH2-PPh3)(-CHCH-PPh3)2(PPh3)]3+ (11) from 9 with HCCH and PPh3. 相似文献
14.
Dipankar Mishra Andrea Barbieri Hake M. Figgie Shyamal Kumar Chattopadhyay 《Inorganica chimica acta》2007,360(7):2231-2244
Six ruthenium(II) complexes have been prepared using the tridentate ligands 2,6-bis(benzimidazolyl) pyridine and bis(2-benzimidazolyl methyl) amine and having 2,2′-bipyridine, 2,2′:6′,2″-terpyridine, PPh3, MeCN and chloride as coligands. The crystal structures of three of the complexes trans-[Ru(bbpH2)(PPh3)2(CH3CN)](ClO4)2 · 2H2O (2), [Ru(bbpH2)(bpy)Cl]ClO4 (3) and [Ru(bbpH2)(terpy)](ClO4)2 (4) are also reported. The complexes show visible region absorption at 402-517 nm, indicating that it is possible to tune the visible region absorption by varying the ancillary ligand. Luminescence behavior of the complexes has been studied both at RT and at liquid nitrogen temperature (LNT). Luminescence of the complexes is found to be insensitive to the presence of dioxygen. Two of the complexes [Ru(bbpH2)(bpy)Cl]ClO4 (3) and [Ru(bbpH2)(terpy)](ClO4)2 (4) show RT emission in the NIR region, having lifetime, quantum yield and radiative constant values suitable for their application as NIR emitter in the solid state devices. The DFT calculations on these two complexes indicate that the metal t2g electrons are appreciably delocalized over the ligand backbone. 相似文献
15.
The nickel(II) complexes of the compositions [Ni(hmidtc)(bpy)2]ClO4 (I), [Ni(hmidtc)(phen)2]ClO4 (II), [Ni(hmidtc)(phen)2]SCN (III), [Ni(hmidtc)(phen)2]PF6 (IV), [Ni(hmidtc)(phen)2]BPh4 (V), [Ni(hmidtc)(phen)2]AcO·2H2O (VI) and [Ni(hmidtc)(phen)2]Br·H2O (VII), involving a combination of one hexamethyleneimine-dithiocarbamate anion (hmidtc) and two bidentate N,N-donor ligands (2,2′-bipyridine (bpy) for I or 1,10-phenanthroline (phen) for II-VII), have been prepared. The compounds were characterized by elemental analysis, molar conductivity measurements, UV-Vis and IR spectroscopy, magnetochemical measurements and thermal analysis. A single-crystal X-ray analysis of the complex I revealed a distorted octahedral geometry with the nickel(II) ion coordinated by four nitrogen atoms (from two bidentate-coordinated bpy molecules) and two sulfur atoms (from one bidentate-coordinated hmidtc anion), together giving an NiN4S2 donor set. 相似文献
16.
17.
Three new magnetic compounds were synthesized by using 2-(2′-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (NIT2Py) and tris(2-benzimidazolymethyl)amine (NTB) as ligands. The structures and magnetic properties of the complexes with formula [Ni(NIT2Py)(NTB)](ClO4)2(CH3OH) 1, [Mn(NIT2Py)(NTB)](ClO4)22 and {[Zn(NIT2Py)2(CH3OH)2](ClO4)2}{[Zn(NTB)(H2O)](ClO4)2} 3 were characterized. Compounds 1 and 2 both have [M(NIT2Py)(NTB)] structural units, where the metal ion is in an octahedral environment bound to one NIT2Py through one pyridyl nitrogen atom and one nitroxide oxygen atom. However, compound 3, the chelating zinc ion has two crystallographically independent molecules in the asymmetric unit: one is six coordinated octahedral structure [Zn(NIT2Py)2(CH3OH)2](ClO4)2, and the other one is five coordinated pyramidal structure [Zn(NTB)(H2O)](ClO4)2. The magnetic behaviors of these compounds indicate that both the nickel ion and the manganese ion are antiferromagnetically coupled with the NIT2Py ligand with a coupling constant of −19.44 and −0.37 cm−1, respectively, whereas two NIT2Py ligands in compound 3 are ferromagnetically coupled with a coupling constant of 19.1 cm−1. 相似文献
18.
R.J. Bowen E.M. Coyanis D. Defayay M. Layh R.M. Moutloali 《Inorganica chimica acta》2009,362(9):3172-3180
The reaction of the chelating P,N ligand RNC(But)CH(R)PPh2 (R = SiMe3) (1) with CuCl and CuCl2 (probably by way of reduction to Cu(I) by the phosphine ligand) or Cu(NCCH3)4ClO4 yielded the dimeric 1:1 complex [Cu{PPh2CH(R)C(But)NR}Cl]2 (2) or the monomeric 2:1 complex [Cu{PPh2CH(R)C(But)NR}2]ClO4 (3), respectively. The presence of trace amounts of water during the reaction resulted in the successive cleavage of the two trimethylsilyl groups of the ligand and the formation of the monomeric chelate complexes [Cu{PPh2CH(R)C(But)NH}2]ClO4 (4) and [Cu{PPh2CH2C(But)NH}2]ClO4 (5). Oxidation of 5 by atmospheric oxygen led to small quantities of the blue Cu(II) complex [Cu{(O)PPh2CH2C(But)NH}2](ClO4)2 (6). The dimeric gold complexes [Au{PPh2CH2C(But)NH}]2X2 (X = BF4, ClO4) (7) were similarly obtained from the previously described Au{PPh2CH(R)C(But)NR}Cl by replacing the covalently bound chlorine with the weakly coordinating anions in the presence of small quantities of water. The solution and solid state structures (except 5) of all complexes were determined by NMR spectroscopy and X-ray crystallography. 相似文献
19.
《Inorganica chimica acta》2006,359(5):1513-1518
[ReOX3(PPh3)2] complexes (X = Cl and Br) react with equivalent amounts of 2-hydroxypyridine (Hhp) under formation of the mono-substituted, zwitterionic complexes mer-[ReOCl3(Hhp)(PPh3)] (1) and mer-[ReOBr3(Hhp)(PPh3)] (2). Crystal structure determinations of 1 · CH2Cl2 and 2 revealed the Cl and Br ligands adopt a mer arrangement. The Hhp ligands coordinate neutral and monodentate via their exocyclic oxygen atoms in axial positions, trans to the oxo groups. The distorted octahedral coordination sphere of the rhenium(V) complexes is completed by the phosphorus atom of the remaining PPh3 ligand. 相似文献
20.
Effendy Fabio Marchetti Riccardo Pettinari Brian W. Skelton 《Inorganica chimica acta》2006,359(5):1504-1512
From the interaction between azole-type ligands L and AgX (X = NO3 or ClO4) or [AgX(PPh3)n] (X = Cl, n = 3; X = MeSO3, n = 2), new ionic mononuclear [Ag(L)2]X and [Ag(PPh3)3L][X] or neutral mono-([Ag(PPh3)nL(X)]) or di-nuclear ([{Ag(PPh3)(L)(μ-X)}2]) complexes have been obtained which have been characterized through elemental analysis, conductivity measurements, IR, 1H NMR and, in some cases, also by 31P{1H} NMR spectroscopy, and single-crystal X-ray studies. Stoichiometries and molecular structures are dependent on the nature of the azole (steric hindrance and basicity), of the counter ion, and on the number of the P-donor ligands in the starting reactants. Solution data are consistent with partial dissociation of the complexes, occurring through breaking of both Ag-N and Ag-P bonds. 相似文献