共查询到20条相似文献,搜索用时 31 毫秒
1.
Yuri V. Mironov Konstantin A. Brylev Spartak S. Yarovoi Hartmut Spies Holger Stephan Gert Bernhard 《Inorganica chimica acta》2006,359(4):1129-1134
Two new octahedral cluster complexes - [Re6S8(3,5-Me2PzH)6]Br2 · 2(3,5-Me2PzH) (1) and [Re6Se8(3,5-Me2PzH)6]Br2 · 2(3,5-Me2PzH) (2), where 3,5-Me2PzH is 3,5-dimethylpyrazole, have been synthesized using reaction of rhenium chalcobromide complexes Cs4[Re6S8Br6] · 2H2O and Cs3[Re6Se8Br6] · H2O, respectively, with molten 3,5-dimethylpyrazole. Both compounds synthesized were characterized by X-ray single-crystal diffraction and chemical analysis, IR and luminescent spectra. 相似文献
2.
Konstantin A. Brylev Yuri V. Mironov Sung-Jin Kim Hans-Jürgen Pietzsch Akitaka Ito 《Inorganica chimica acta》2010,363(11):2686-2691
A room-temperature reaction between [Re6S8(OH)6]4− and acetic acid in an aqueous solution resulted in the substitution of all terminal hydroxo groups by acetate ligands, affording a new hexanuclear anionic rhenium cluster complex [Re6S8(CH3COO)6]4−. The complex was isolated as a potassium salt with the composition of K4[Re6S8(CH3COO)6]·8H2O (1) and characterized by X-ray single-crystal diffraction and elemental analyses, IR, 1H NMR, UV-Vis, and luminescence spectroscopies. 相似文献
3.
Yuri V. Mironov Konstantin A. Brylev Sung-Jin Kim Svetlana G. Kozlova Vladimir E. Fedorov 《Inorganica chimica acta》2011,370(1):363-368
A hexarhenium cyanohydroxo anionic cluster complex [Re6Se8(CN)4(OH)2]4− was synthesized for the first time starting from [Re6Se8(OH)6]4−, which was crystallized as a salt of the composition Cs2.75K1.25[Re6Se8(CN)4(OH)2]·H2O (1). The reaction of the complex with Cu2+ in an aqueous ammonia or methylamine solutions afforded [Cu(NH3)5]2[Re6Se8(CN)4(OH)2]·8H2O (2) or [{Cu(CH3NH2)4}2Re6Se8(CN)4(OH)2] (3), respectively. All of these three compounds were characterized by a single-crystal X-ray diffraction method. Compound 1 is crystallized in the tetragonal space group I4/m with eight formula units per cell (a = b = 17.4823(14) Å, c = 19.430(2) Å, V = 5938.3(10) Å3); compound 2 is crystallized in the monoclinic space group P21/n with two formula units per cell (a = 12.1845(13) Å, b = 8.6554(9) Å, c = 19.2568(19) Å, β = 91.081(2)°, V = 2030.5(4) Å3); compound 3 is crystallized in the orthorhombic space group Cmcm with four formula units per cell (a = 19.816(4) Å, b = 14.611(3) Å, c = 13.751(3) Å, V = 3981.2(13) Å3). The luminescence properties of 1 were studied in both aqueous solution and solid state. In addition, the electronic structure of [Re6Se8(CN)4(OH)2]4− was elucidated by DFT calculations. 相似文献
4.
Olga A. Efremova Natalia V. Kuratieva Vladimir E. Fedorov 《Inorganica chimica acta》2010,363(15):4411-4415
Supramolecular compounds {C8N2H22@Cuc[6]}{Re6S8(H2O)2(OH)4}·18H2O (1), and K2{C8N2H22@Cuc[6]}{Re6S8(OH)6}·14H2O (2) were obtained by crystallization from aqueous solutions that contained the macrocyclic cavitand cucurbit[6]uril (C36H36N24O12), 1,8-diaminooctane and the cluster thiohydroxo complex [Re6S8(OH)6]4−. The resultant composition of the formed compounds depends on the experiment technique. According to the X-ray diffraction analysis, 1,8-diaminooctane molecules are encapsulated within the cavity of the cucurbit[6]uril molecules in such a way that the aminogroups are above and below the plane of the cavitand. The 1,8-diaminooctane molecules formed hydrogen bonds with the cavitand and the cluster thiohydroxo complexes to give chains. 相似文献
5.
(Polypyrazolylborato)(benzonitrile) ruthenium(II) complexes [RuCl{BR(pz)3}(PhCN)2] (R = pz, H; pz = pyrazol-1-yl), prepared from trans-[RuCl2(PhCN)4] and K[BR(pz)3], were allowed to react with potassium 3,5-dimethyl-substituted polypyrazolylborate salt K[BH(3,5-Me2pz)3], and gave (pyrazolato)(pyrazole) species of [Ru{BR(pz)3}(3,5-Me2pz)(3,5-Me2pzH)2] {R = pz (1), H (2)}, respectively. Upon protonation with HBF4 (Et2O), the species 1 was converted to a fairly stable tris(pyrazole) derivative [Ru{B(pz)4}(3,5-Me2pzH)3]BF4 (3), which worked as a novel halogeno-anion receptor. Moreover, the complex [RuCl2(PhCN)4] was treated with K[BH(3,5-Me2-4-Brpz)3] in the presence of 3,5-dimethyl-4-bromopyrazole, 3,5-Me2-4-BrpzH, to afford [Ru{BH(3,5-Me2-4-Brpz)3}(3,5-Me2-4-Brpz)(3,5-Me2-4-BrpzH)2] and [Ru{BH(3,5-Me2-4-Brpz)3}(3,5-Me2-4-Brpz)(3,5-Me2-4-BrpzH)(PhCN)]. Single-crystal X-ray structural analyses were carried out for 1, 3 · CHCl3, [Ru{B(pz)4}(3,5-Me2pzH)2(OH2)]O3SC6H4CH3 · CH3OH, and [RuCl{B(pz)4}(3,5-Me2pzH)2] · CHCl3. 相似文献
6.
Višnja Vrdoljak Jana Pisk Biserka Prugove?ki Dubravka Matkovi?-?alogovi? 《Inorganica chimica acta》2009,362(11):4059-449
New molybdenum complexes were prepared by the reaction of [MoVIO2(acac)2] or (NH4)2[MoVOCl5] with different N-substituted pyridoxal thiosemicarbazone ligands (H2L1 = pyridoxal 4-phenylthiosemicarbazone; H2L2 = pyridoxal 4-methylthiosemicarbazone, H2L3 = pyridoxal thiosemicarbazone). The investigation of monomeric [MoO2L1(CH3OH)] or polymeric [MoO2L1-3] molybdenum(VI) complexes revealed that molybdenum is coordinated with a tridentate doubly-deprotonated ligand. In the oxomolybdenum(V) complexes [MoOCl2(HL1-3)] the pyridoxal thiosemicarbazonato ligands are tridentate mono-deprotonated. Crystal and molecular structures of molybdenum(VI) [MoO2L1(CH3OH)]·CH3OH, and molybdenum(V) complexes [MoOCl2(HL1)]·C2H5OH, as well as of the pyridoxal thiosemicarbazone ligand methanol solvate H2L3·MeOH, were determined by the single crystal X-ray diffraction method. 相似文献
7.
Maurizio Lanfranchi Clara Mora Maria Angela Pellinghelli 《Inorganica chimica acta》2004,357(2):367-375
The ligand hydrotris(1,4-dihydro-3-methyl-4-phenyl-5-thioxo-1,2,4-triazolyl)borato (TrPh,Me) was synthetized as natrium salt and the complexes [Zn(TrPh,Me)2] · 7.5H2O · 1.5CH3CN (2a), [Zn(TrPh,Me)2] · 8DMF (2b), [Co(TrPh,Me)2] · 8DMF (3a), [Ni(TrPh,Me)2] · H2O · 6DMSO (4a), [Bi(TrPh,Me)2]NO3 (5), have been isolated and structurally characterized by X-ray diffraction. In the zinc derivatives the ligand adopts different denticity and coordination modes, η2 and [S2] for 2a and η3 and [N3] for 2b, depending on the crystallization solvent, giving rise to tetrahedral and octahedral geometry, respectively. In the octahedral cobalt and nickel complexes the ligand is η3 and [N3] coordinated whereas in the bismuth complex the η3 and [S3] coordination is exhibited. 相似文献
8.
The synthesis and crystal structure of four new copper(I) and copper(II) supramolecular amine, and amine phosphonate, complexes is reported. Reaction of copper(I) with 2-,9-dimethyl-1-10-phenanthroline (dmp) produced a stable 4-coordinate Cu(I) species, [Cu(I)(dmp)2]Cl · MeOH · 5H2O (2), i.e., the increased steric hindrance in the ‘bite’ area of dmp did not prevent interaction with the metal and provided protection against oxidation which was not possible for the phen analogue [R. Clarke, K. Latham, C. Rix, M. Hobday, J. White, CrystEngCommun. 7(3) (2005), 28-36]. Subsequent addition of phenylphosphonic acid to (2) produced two structures from alternative synthetic routes. An ‘in situ’ process yielded red block Cu(I) crystals, [Cu(I)(dmp)2] · [C6H5PO3H2 · C6H5PO3H] (4), whilst recrystallisation of (2) prior to addition of the acid (‘stepwise’ process) produced a green, needle-like Cu(II) complex, [Cu(II)(dmp) · (H2O)2 · C6H5PO2(OH)] [C6H5PO2(OH)] (3). However, addition of excess dmp during the ‘stepwise’ process forced the equilibrium towards product (4) and resulted in an optimum yield (99%). The structure of (4) was similar to the phen analogue, [Cu(II)Cl(phen)2] · [C6H5PO2(OH) · C6H5PO(OH)2] (1) [R. Clarke, K. Latham, C. Rix, M. Hobday, J. White, CrystEngCommun. 7(3) (2005), 28-36], but the presence of dmp exerted some influence on global packing, whilst (3) exists as a polymeric layered material. In contrast, reaction of copper(I) with di-2-pyridyl ketone (dpk), followed by phenylphosphonic acid produced purple/blue Cu(II) species, [Cu(II)(dpk · H2O)2] Cl2 · 4H2O (5), and [Cu(II)(dpk · H2O)2] · [C6H5PO2(OH)2 · C6H5PO(OH)2] (6), respectively, i.e., in both cases oxidation of copper occurred. Solid-state luminescence was observed in (2) and (4). The latter showing a 5-fold enhancement in intensity. 相似文献
9.
Thomas Schölkopf 《Inorganica chimica acta》2011,374(1):181-186
The orthorhombically crystallizing salts Rb2[B12(OH)12]·2H2O (a = 1576.81(9), b = 813.08(5), c = 1245.32(7) pm) and Rb2[B12(OH)12]·2H2O2 (a = 1616.54(9), b = 814.29(5), c = 1260.12(7) pm) could be prepared from Rb2[B12H12] and hydrogen peroxide. Both crystal structures were determined by X-ray single crystal diffraction and refined in the space group Cmce. They are not isostructural to the other compounds containing icosahedral dodecahydroxo-closo-dodecaborate dianions [B12(OH)12]2− and potassium, rubidium or cesium cations already known to literature, but both title compounds crystallize quasi-isotypically exhibiting Rb+ cations in 10-fold oxygen coordination. The hydrogen peroxide adduct (Rb2[B12(OH)12]·2H2O2) is explosive on shock and heat, while the hydrate (Rb2[B12(OH)12]·2H2O) is not. 相似文献
10.
Jinkwon Kim Sujin Han Kwang-Yong Choi Hiroyuki Nojiri Byoung Jin Suh 《Inorganica chimica acta》2007,360(8):2647-2652
The octanuclear cyano-bridged cluster [(Tp)8Fe4Ni4(CN)12] · H2O · 24CH3CN (1) (Tp = hydrotris(1-pyrazolyl)borate) showing magnetic properties of single-molecule magnet has been synthesized by reaction of [fac-Fe(Tp)(CN)3]− with {(Tp)Ni(NO3)} species formed from an equimolar reaction mixture of Ni(NO3)2 · 6H2O and KTp in MeCN. The X-ray analysis of 1 shows molecular cube structure in which FeIII and NiII ions reside in alternate corners. The average intramolecular Fe?Ni distance is 5.124 Å. Out-of-phase ac susceptibility and reduce magnetization measurements show that 1 is a single molecule magnet with ground spin state S = 6 and spin reversal energy barrier U = 14 K. Magnetic hysteresis loops were also observed by applying fast sweeping field. 相似文献
11.
Interaction of [NbCl5] with the diphenol 2,2′-CH3CH[4,6-(But)2C6H2OH]2 (LH2) affords, after work-up, the red crystalline complex [NbCl(NCMe)L2] (1). Under similar conditions, [NbOCl3] and the sulfur-bridged diphenol 2,2′-S[4,6-(But)2C6H2OH]2 (LSH2) afford the orange complex [NbCl(LS)2] (2). Crystal structure determinations of 1 · 2MeCN and 2 reveal monomeric 6- and 7-coordinate complexes, respectively. The polymerization behaviour of 1 and 2 towards ethylene, in the presence of alkylaluminium co-catalysts has been examined and has been compared with that of the known niobium aryloxides [Nb(Me-L2)Cl2]2 (3), {Nb[(But-L2)H]2Cl(NCMe)} (4) and [Nb(But-L2)Cl2] (5), derived from the linear-linked aryloxide trimers 2,6-bis(4,6-dimethylsalicyl)-4-tert-butylphenol [(Me-L2)H3] and 2,6-bis(4-methyl-6-tert-butylsalicyl)-4-tert-butylphenol [(But-L2)H3]. The crystal structure of the acetonitrile solvate of 3 · 4MeCN, is also reported. 相似文献
12.
Two new mononuclear spin-crossover iron(II) complexes, [FeL2(NCS)2] · H2O (1) and [FeL2(NCSe)2] (2), have been synthesized from the reaction of the versatile ligand 4,5-bis(2-cyanoethylthio)-2-bis(2-pyridyl)methylene-1,3-dithiole (L), Fe(ClO4)2, and KNCX (X = S/Se). Reactions of L with CuII or CoII salts afford one mononuclear complex [CuL(hfac)2] · CH3OH (hfac = hexafluoroacetylacetonate) (3), one dinuclear complex [(CuLCl)2(μ-Cl)2] · CH3OH (4), and two 1D chain species, [CuL2]n(BF4)2n (5) and [CoL2]n(ClO4)2n · 2nCH2Cl2 (6). The crystal structures of complexes 1 and 3-6 have been determined by X-ray crystallography. Short intermolecular S?S contacts between neighboring 1D arrays are observed in 5 and 6, which lead to the formation of the 2D structure. The magnetic properties are studied, and antiferromagnetic couplings between the CuII centers across the chloride bridges have been found in 4 (J = 2.04 cm-1). Spin-crossover behaviors between high and low spin states are observed at T1/2 = 80 K for 1 and T1/2 = 300 K for 2, respectively. 相似文献
13.
Reaction of vanadium(III) chloride with 8-quinolinol (Hqn) gave a mononuclear vanadium(IV) complex, [VOCl2(H2O)2] 1) · 2H2qn · 2Cl · CH3CN, and three dinuclear vanadium(IV) complexes: [V2O2Cl2(qn)2(H2O)2] (2) · Hqn, [V2O2Cl2(qn)2(C3H7OH)2] (3), and [V2O2Cl2(qn)2(C4H9OH)2] (4). Reaction of vanadium(III) chloride with 5-chloro-8-quinolinol (HClqn) gave four dinuclear vanadium(IV) complexes: [V2O2Cl2(Clqn)2(H2O)2] (5) · 2HClqn, [V2O2Cl2(Clqn)2(C3H7OH)2] (6), [V2O2Cl2(Clqn)2(C6H5CH2OH)2] (7), and [V2O2Cl2(Clqn)2(C4H9OH)2] (8) · 2C4H9OH. Reaction of vanadium(III) chloride with 5-fluoro-8-quinolinol (HFqn) gave two dinuclear vanadium(IV) complexes: [V2O2Cl2(Fqn)2(H2O)2] (9) · HFqn · 2H2O and V2O2Cl2(Fqn)2(C3H7OH)2] (10). X-ray structures of 1 · 2H2qn · 2Cl · CH3CN, 3, 4, 6, 7, 8 · 2 t-BuOH, and 10 have been determined. As to the mononuclear species 1 · 2H2qn · 2Cl · CH3CN, coordination of Hqn to vanadium does not occur, but protonation to Hqn occurs to give H2qn+, which links 1’s through hydrogen bonding, while each of the dinuclear species has a terminal and a bridging qn (or Clqn, Fqn) ligand, giving rise to a (V-O)2 ring. Magnetic measurements of 3, 4, 6, 7, and 10 in solid form show very weak antiferromagnetic behavior, and the effective magnetic moments are close to spin only value (2.44) of d1-d1 system, while ESR of 3 in THF shows dissociation to monomeric species. Change from mononuclear, 1, to dinuclear, 2, species was followed by the change of electronic spectrum. 相似文献
14.
Condensation of (S,S)-1,2-cyclohexanediamine with 2 equiv. of 2-pyridine carboxaldehyde in toluene in the presence of molecular sieves at 70 °C gives N,N′-bis(pyridin-2-ylmethylene)-(S,S)-1,2-cyclohexanediamine (S,S-1) in 95% yield. Reduction of 1 with an excess of NaBH4 in MeOH at 50 °C gives N,N′-bis(pyridin-2-ylmethyl)-(S,S)-1,2-cyclohexanediamine (S,S-2) in 90% yield. Reaction of 1 or 2 with 1 equiv. of CuCl2 · 2H2O in methanol gives complexes [N-(pyridin-2-ylmethylene)-(S,S)-1,2-cyclohexanediamine]CuCl2 (3) and [Cu(S,S-2)(H2O)]Cl2 · H2O (4), respectively, in good yields. Complex 4 can further react with 1 equiv. of CuCl2 · 2H2O in methanol to give [Cu(S,S-2)][CuCl4] (5) in 75% yield. The rigidity of the ligand coupled with the steric effect of the free anion plays an important role in the formation of the helicates. Treatment of ligand S,S-1 with AgNO3 induces a polymer helicate {[Ag(S,S-1)][NO3]}n (6), while reaction of ligand 2 with AgPF6 or AgNO3 in methanol affords a mononuclear single helicate [Ag(S,S-2)][PF6] (7) or a dinuclear double helicate [Ag2(S,S-2)2][NO3]2 · 2CH3OH (8) in good yields, respectively. All compounds have been characterized by various spectroscopic data and elemental analyses. Compounds 1, 3-5, 7 and 8 have been further subjected to single-crystal X-ray diffraction analyses. The Cu(II) complexes do not show catalytic activity for allylation reaction, in contrast to Ag(I) complexes, but they do show catalytic activity for Henry reaction (nitroaldol reaction) that Ag(I) complexes do not. 相似文献
15.
Theocharis C. Stamatatos Anastasios Tasiopoulos Ramon Vicente Vassilios Nastopoulos Albert Escuer Spyros P. Perlepes 《Inorganica chimica acta》2006,359(12):4149-4157
The use of 2-pyridinealdoximate(−1) [(py)CHNO−] in nickel(II) chemistry has been further investigated. The synthetic investigation has led to two new salts of the very recently reported (in the form of its tetraperchlorate salt, 1) enneanuclear cation [Ni9(μ3-OH)2(μ2-OH)2{μ3-(py)CHNO}4{μ2-(py)CHNO}6(μ2-OH2)2(H2O)6]4+. The two new cationic clusters [Ni9(OH)4{(py)CHNO}10(H2O)8](SCN)2(OH)2 · 9.91H2O (2 · 9.91H2O) and [Ni9(OH)4{(py)CHNO}10(H2O)8]{N(CN)2}3(ClO4) · 11.11H2O (3 · 11.11H2O) have been structurally characterized by single-crystal X-ray crystallography at 100 K. The nature of the inorganic anions (Cl−/SCN−,) present in the reaction mixtures does not affect the chemical and structural identity of the enneanuclear cation. Characteristic IR data are discussed in terms of the nature of bonding and the structures of the complexes. The variable-temperature magnetic susceptibility data of 1, which had also been obtained by our group, were simulated by means of a 3-J model, which is compared with the 2-J model reported for this cluster by Chaudhuri and co-workers [S. Khanra, T. Weyhermüller, E. Rentschler, P. Chaudhuri, Inorg. Chem. 44 (2005) 8176]. The ground-state total spin of the cluster is ST = 1. 相似文献
16.
Two mononuclear neutral copper(I) complexes, Cu(L1)PPh3 (1), Cu(L2)(PPh3)2 (2) ([L1]− = [{N(C6H3iPr2-2,6)C(H)}2CPh]−; [L2]− = [{N(C6H5)C(H)}2CPh]−) have been synthesized and structurally characterized by X-ray crystallography. In complex 1, the copper(I) atom is in a distorted three-coordinate trigonal planar environment, whereas in complex 2 with the less sterically hindered β-dialdiminato ligand, the copper(I) atom is the centre of a four-coordinate distorted tetrahedron. At room temperature complexes 1 and 2 in a film of PMMA exhibit green emission at 543 and 549 nm with lifetimes of 5.28 and 5.32 ns, respectively. 相似文献
17.
A series of the first zinc(II) complexes of the general composition [Zn(Ln)2Cl2]·xSolv (1-5) involving kinetin [N6-furfuryladenine, L1, xSolv = CH3OH, complex 1] and its derivatives, i.e. N6-(5-methylfurfuryl)adenine (L2, xSolv = 2H2O, 2), 2-chloro-N6-furfuryladenine (L3, 3), 2-chloro-N6-(5-methylfurfuryl)adenine (L4, 4) and 2-chloro-N6-furfuryl-9-isopropyladenine (L5, 5), as N-donor ligands has been synthesized. The complexes have been fully characterized by elemental analyses (C, H, N), FTIR, Raman, 1H and 13C NMR spectroscopy, conductivity measurements, thermogravimetric (TG) and differential thermal (DTA) analyses. Single crystal X-ray analysis determined the molecular structures of 2-chloro-N6-furfuryl-9-isopropyladenine (L5) and the complex [Zn(L1)2Cl2]·CH3OH. The Zn(II) ion is tetrahedrally coordinated by two chlorido ligands and two molecules of the L1 organic compound. The two ligands L1 are coordinated to the central Zn(II) ion via the N7 atoms. This conclusion can also be drawn from multinuclear NMR spectroscopic experiments. 相似文献
18.
Four lanthanide coordination polymers formulated as {[La3L9(H2O)3]EtOH · H2O}n1, {[Pr2L6(H2O)2]HL · H2O}n2, {[Dy2L6(H2O)]0.5HL · H2O}n3 and {[Ho2L6(H2O)]0.5HL · H2O}n4 and HL = trans-2-butenoic acid have been synthesized from the corresponding pure lanthanide oxide and HL acid in water at pH 3. The compounds were characterized by chemical analysis, IR spectroscopy, thermogravimetry, variable-temperature magnetic susceptibility and single crystal X-ray diffraction studies. A common feature in these materials is the presence of two differentiated lanthanide nodes linked by carboxylates into extended chains. These are further connected by inter- and intra-molecular hydrogen-bonds involving ligand and solvate molecules. Weak ferromagnetic interactions appear to be operative in the Dy material. 相似文献
19.
The trinuclear complex [L2Cu3(CF3CO2)4] (1) has been synthesized and its crystal structure determined. It consists of a linear arrangement of Cu(II) centers. The central copper atom is bonded to six oxygen atoms and has a tetragonally distorted octahedral geometry, while the terminal copper atoms are bonded to three oxygen and two nitrogen atoms and show a distorted square pyramidal geometry. The complex shows di-μ(O,O′) syn-syn carboxylate bridging as well as monoatomic (μ-O) bridging, along with phenolate (μ-O) oxygen bridging. Cryomagnetic investigations in the range 2-300 K revealed an antiferromagnetic spin exchange interaction with J = −95.7 cm−1, based on the isotropic exchange model Hex = −2J[S1 · S2 + S2 · S3]. 相似文献
20.
Nikos Lekkas Achilleas Garoufis Joseph Kobe Edward R.T. Tiekink 《Inorganica chimica acta》2006,359(13):4297-4303
The Pd(II) and Pt(II) complexes with triazolopyrimidine C-nucleosides L1 (5,7-dimethyl-3-(2′,3′,5′-tri-O-benzoyl-β-d-ribofuranosyl-s-triazolo)[4,3-a]pyrimidine), L2 (5,7-dimethyl-3-β-d-ribofuranosyl-s-triazolo[4,3-a]pyrimidine) and L3 (5,7-dimethyl[1,5-a]-s-triazolopyrimidine), [Pd(en)(L1)](NO3)2, [Pd(bpy)(L1)](NO3)2, cis-Pd(L3)2Cl2, [Pd2(L3)2Cl4] · H2O, cis-Pd(L2)2Cl2 and [Pt3(L1)2Cl6] were synthesized and characterized by elemental analysis and NMR spectroscopy. The structure of the [Pd2(L3)2Cl4] · H2O complex was established by X-ray crystallography. The two L3 ligands are found in a head to tail orientation, with a Pd?Pd distance of 3.1254(17) Å. L1 coordinates to Pd(II) through N8 and N1 forming polymeric structures. L2 coordinates to Pd(II) through N8 in acidic solutions (0.1 M HCl) forming complexes of cis-geometry. The Pd(II) coordination to L2 does not affect the sugar conformation probably due to the high stability of the C-C glycoside bond. 相似文献