配合物[Cu(HPHAc)2(py)2](H2PHAc=苯羟乙酸，py=吡啶)的合成和晶体结构

The novel copper(Ⅱ) complex with α-hydroxyphenylacetic acid (H₂PHAc) and pyridine (py) ligands, [Cu(HPHAc)₂(py)₂], has been synthesized and characterized by elemental analysis and IR spectroscopy. Its crystal structure was determined by single crystal X-ray diffraction techniques. The crystal belongs to monoclinic with space group C2/c. The cell parameters are: a=1.712 5(3) nm, b=1.533 2(2) nm, c=0.963 42(14) nm, β=111.866(2)°, V=2.347 6(6) nm³, and D_c=1.483 Mg·m^-3, Z=4, F(000)=1 084. The structure was refined to final R₁=0.071 4, wR₂=0.166 1. The complex has a six-coordinated distorted octahedral geometry, in which copper(Ⅱ) ion coordinates with two carboxylic oxygen atoms and two hydroxyl oxygen atoms from the two α-hydroxyphenylacetic acid ligands, two nitrogen atoms from the two pyridine ligands. The analysis of the crystal structure indicates that the complex has a one-dimensional chain structure, which is formed by intermolecular hydrogen bonds. CCDC: 255346.     

配合物[Co(phen)2(m-chlorobenzoic acid)2·(H2O)]·(H2O)2的水热合成、晶体结构电化学分析

The title complex has been synthesized with m-chlorobenzoic acid, 1,10-phenanthroline and cobalt perchlorate anhydrous in the solvent mixture of water and methanol. Crystal data for this complex: triclinic, space group P1, a=0.870 7(3) nm, b=1.284 4(4) nm, c=1.692 9(5) nm; α=75.430(5)°, β=77.562(5)°, γ=86.346(5)°, V=1.789 4(9) nm³, D_c=1.456 g·cm^-3, Z=2, F(000)=806. Final GooF=1.065, R₁=0.068 4, wR₂=0.127 5. The crystal stru-cture shows that the Cobaly ion is coordinated with four nitrogen atoms from two 1,10-phenanthroline molecules and two oxygen atoms from one m-chlorobenzoic acid molecule and one water molecule respectively, forming a distorted octahedral coordination geometry. The cyclic voltametric behavior of the complex is also reported. CCDC: 619087.     

多元混配合物[Ni(NPA)2(Phen)(Ac)(H2O)]·H2O的合成、晶体结构

A Nickle(Ⅱ) complex [Ni(NPA)₂(Phen)(Ac)(H₂O)]·H₂O has been synthesized (NPA=N-phenylanthranilic acid， Phen=1，10-phenanthroline and Ac=acetate) and characterized by IR， elemental analysis and X-ray crystal structure determination. It crystallizes in triclinic system， space group P1 with a=0.891 25(2) nm， b=1.451 85(3) nm， c=1.485 54(3) nm， α=67.384(1)°， β=82.932(1)°， γ=85.168(1)°， V=1.759 50(6) nm³， Z=2， D_c=1.405 g·cm^-3， F(000)=778， R₁=0.032 3， wR=0.084 7. The crystal structure shows that the Nikcle(Ⅱ) ion is coordinated with two oxygen atoms from two N-phenylanthranilic acid，two nitrogen atoms from one 1，10-phenanthroline， two oxygen atoms from one acetate and one water respectively， forming a distorted octahedral coordination geometry. CCDC: 657265.     

配合物[Cu2(phen)2](SiW12O40)(H2O)7的合成、晶体结构及电化学分析

The title complex has been synthesized by the reaction of silicotungstic acid, 1,10-phenanthroline (phen) monohydrate and cupric acetate. The crystal structure belongs to triclinic system, space group P1 with a=1.158 46(15) nm, b=1.658 8(2) nm, c=1.664 4(2) nm, α=82.090(2)°, β=76.001(2)°, γ=86.531(2)°, and V=3.072 6(7) nm³, D_c=3.887 g·cm^-3, Z=2, F(000)=3 196. R₁=0.086 7, wR₂=0.185 8. The structure shows that the copper(Ⅱ) atom is coordinated with two nitrogen atoms from the one phen and three oxgygen atoms from three water, forming a distorted square-pyramid configuration The cyclic voltametric behavior of the complex is also reported. CCDC: 298807.     

[Cu(PTA)(Phen)2](p-MBA)(H6O)配合物的合成、晶体结构及电化学分析

The crystal structure of the title complex with the stoichiometric formula [Cu(PTA)(Phen)₂](p-MBA)(H₆O) (Phen=1,10-phenanthroline, PTA=terephthalic acid, p-MBA=p-toluic acid) has been determined by single-crystal X-ray diffraction. The crystal (C₄₈H₄₀CuN₄O₁₀, M_r=896.38) belongs to the monoclinic space group C2/c, with the following crystallographic parameters: a=1.778 6(3) nm, b=1.912 5(3) nm, c=1.389 9(2) nm, β=114.686(2)°, V=4.295 7(12) nm³, D_c=1.386 g·cm^-3, Z=4, μ(Mo Kα)=0.574 mm^-1, F(000)=1 860, final GooF=1.019, R=0.054 0, wR=0.148 3 for 2 644 observed reflections (I>2σ(I)). The crystal structure shows that the copper(Ⅱ) ion is coordinated with two oxygen atoms from one terephthalic acid molecule and four nitrogen atoms from two 1,10-phenanthroline molecules, forming a distorted octahedral coordination geometry. The cyclic voltametric behavior of the complex is also reported. CCDC: 298809.     

2,4,6-三甲基苯甲酸和1,10-邻菲啰啉双核铽配合物的合成和晶体结构

A binuclear terbium complex with 2,4,6-Trimethylbenzoate and 1,10-phenanthroline, [Tb₂(TMBA)₆(Phen)₂], has been synthesized (TMBA=2,4,6-Trimethylbenzoic acid and phen=1,10-phenanthroline) and characterized by IR, elemental analysis and X-ray diffraction methods. The title complex crystallizes in monoclinic system, space group P2₁/c with a=1.327 5(2) nm, b=2.817 9(5) nm, c=1.282 5(2) nm, β=116.692(3)°, V=4.286 2(13) nm³, Z=4，D_c=1.423 g·cm^-3. There are four bridged carboxylate groups of the 2,4,6-trimethylbenzoic acid bonded to the two terbium ions, each ions is also chelated with the two oxygen atoms of a molecule of the 2,4,6-trimethylbenzoic acid and the two nitrogen atoms of a 1,10-phenanthroline respectively, forming a 8-coordination distorted square antiprism. Average Tb-O and Tb-Ndistance of the two Tb(Ⅲ) ions are equal respectively. This shows the two terbium ions are in the same chemical enviorments. The complex emits intense green fluorescence under ultraviolet light. CCDC: 619215.     

双核配合物[Cu2(L-Asp)(phen)3(NO3)](NO3)·4H2O的合成及晶体结构

The new complex [Cu₂(L-Asp)(phen)₃(NO₃)](NO₃)·4H₂O (L-Asp=L-aspartic acid and phen=1,10-phenanthroline) has been synthesized and its crystal structure has been determined. The complex crystallizes in the monoclinic with space group P2₁/c, The cell parameters are: a=1.261 3(2) nm, b=1.500 8(4) nm, c=2.230 7(4) nm, β=99.55(1)°, and V=4.164 1(16) nm³，D_c=1.587 g·cm^-3. The complex contains two six-coordinated copper ions, and these two copper ions are connected together by L-aspartate to give rise to a binuclear structure. Hydrogen bonds and π-π stacking interactions are observed in the complex. CCDC: 249250.     

[Ni(phen)2(3,5-DMBA)](m-MBA)2(H2O)2配合物的合成、晶体结构及电化学分析

The title complex of nickel (II) with 3,5-dimethylbenzoic acid, m-methylbenzoic acid and 1,10- phenanthroline was synthesized and characterized. Crystal data for this complex: triclinic, space group P1, a=1.198 5(2) nm, b=1.315 3(2) nm, c=1.531 8(3) nm, α=92.602(3)°, β=103.292(3)°, γ=114.849(3)°, V=2.104 7(6) nm³, D_c=1.361 g·cm^-3, Z=2, F(000)=902, final GooF=1.071, R₁=0.067 2, wR₂=0.155 5. The crystal structure shows that the nickel ion is coordinated with four nitrogen atoms of two 1,10-phenanthroline molecules and two oxygen atoms of one 3,5-dimethyl benzoic acid molecule, forming a distorted octahedral coordination geometry. The cyclic voltametric behavior of the complex was also investigated. CCDC: 286966.     

配合物[Cu(o-ABA)2(2，2′-bipy)]·(H2O)的水热合成、晶体结构及电化学性质

The title complex has been synthesized by o-acetamidobenzoic acid and 2,2′-bipyridine(bipy) in the mixture solvent of water and methanol. It crystallizes(C₂₈H₂₆CuN₄O₇, M_r=594.07) in Triclinic space group P1 with a=0.805 3(4) nm, b=0.845 5(4) nm, c=2.001 8(9) nm; α=100.797(8)°, β=93.054(7)°, γ=97.297(7)°, V=1.323 9(10) nm³, D_c=1.490 g·cm^-3, Z=2, F(000)=614. R₁=0.035 9, wR₂=0.080 5. The crystal structure shows that the copper atom is coordinated with four oxygen atoms from two o-acetamidobenzoic acid and two nitrogen atoms from the 2,2′-bipyridine, forming a distorted octahedral coordination geometry. The cyclic voltametric behavior of the complex is also reported. CCDC: 619084.     

3-甲基-4-对甲基苯基-5-(2-吡啶基)-1，2，4-三唑双核铜(Ⅱ)配合物的合成、晶体结构及磁性

A dinuclear Cu(Ⅱ) complex [Cu₂(MMBPT)₂Cl₄(H₂O)_2.5] (I) [MMBPT=3-Methyl-4-(4-Methylphenyl)-5-(2-pyridyl)-1,2,4-triazole] was synthesized by reaction of MMBPT with CuCl₂·2H₂O and its structure was determined by X-ray crystal structure analysis. The structure indicates that the complex crystallizes in monoclinic, space group P2₁/c with a=1.273 4(3) nm, b=1.237 5(3) nm, c=2.403 2(5) nm, β=90.51(3)°. V=3.786 6(13) nm³, Z=2, D_c=1.429 Mg·m^-3, μ=1.445 mm^-1, F(000)=1 660, and final R₁=0.055 5, wR₂=0.129 7. The crystal structure shows that the dinuclear Cu₂N₆ unit is almost planar in which each Cu(Ⅱ) ion was five-coordinated by one nitrogen atoms from MMBPT and two chlorine in the basal positions and two nitrogen atoms from two MMBPTs respectively in the axial one, to form a distorted trigonal bipyramidal geometry. Magnetic measurements reveal a relatively strong antiferromagentic interaction in the complex. CCDC: 720011.     

OH(3) (-) and O(2)H(5) (-) double Rydberg anions: predictions and comparisons with NH(4) (-) and N(2)H(7) (-)

A low barrier in the reaction pathway between the double Rydberg isomer of OH(3) (-) and a hydride-water complex indicates that the former species is more difficult to isolate and characterize through anion photoelectron spectroscopy than the well known double Rydberg anion (DRA), tetrahedral NH(4) (-). Electron propagator calculations of vertical electron detachment energies (VEDEs) and isosurface plots of the electron localization function disclose that the transition state's electronic structure more closely resembles that of the DRA than that of the hydride-water complex. Possible stabilization of the OH(3) (-) DRA through hydrogen bonding or ion-dipole interactions is examined through calculations on O(2)H(5) (-) species. Three O(2)H(5) (-) minima with H(-)(H(2)O)(2), hydrogen-bridged, and DRA-molecule structures resemble previously discovered N(2)H(7) (-) species and have well separated VEDEs that may be observable in anion photoelectron spectra.     

Mixed ligand titanium(IV) complexes. Chlorobis(dithiocarbamato)bis(methylsalicylato)titanium(IV) andbis(dithiocarbamato)bis(methylsalicylato)titanium(IV)

Summary Dichlorobis(methylsalicylato)titanium(IV) reacts with potassium or amine salts of dialkyl or diaryl dithiocarbamates in 11 and 12 molar ratios in anhydrous benzene (room temperature) or in boiling CH₂Cl₂ to yield mixed ligand complexes: (AcOC₆H₄O)₂ Ti(S₂CNR₂)Cl (1) and (AcOC₆H₄O)₂ Ti(S₂CNR₂)₂ (2), R=Et, n-Pr, n-Bu, cyclo-C₄H₈ and cyclo-C₅H₁₀. These compounds are moisture sensitive and highly soluble in polar solvents. Molecular weight measurement in conjunction with i.r.,¹H and¹³C n.m.r. spectral studies suggest coordination number 7 and 8 around titanium(IV) in (1) and (2) respectively.     

Bis(trifluoroacetyl) peroxide, CF(3)C(O)OOC(O)CF(3)

Pure, highly explosive CF(3)C(O)OOC(O)CF(3) is prepared for the first time by low-temperature reaction between CF(3)C(O)Cl and Na(2)O(2). At room temperature CF(3)C(O)OOC(O)CF(3) is stable for days in the liquid or gaseous state. The melting point is -37.5 degrees C, and the boiling point is extrapolated to 44 degrees C from the vapor pressure curve log p = -1875/T + 8.92 (p/mbar, T/K). Above room temperature the first-order unimolecular decay into C(2)F(6) + CO(2) occurs with an activation energy of 129 kJ mol(-1). CF(3)C(O)OOC(O)CF(3) is a clean source for CF(3) radicals as demonstrated by matrix-isolation experiments. The pure compound is characterized by NMR, vibrational, and UV spectroscopy. The geometric structure is determined by gas electron diffraction and quantum chemical calculations (HF, B3PW91, B3LYP, and MP2 with 6-31G basis sets). The molecule possesses syn-syn conformation (both C=O bonds synperiplanar to the O-O bond) with O-O = 1.426(10) A and dihedral angle phi(C-O-O-C) = 86.5(32) degrees. The density functional calculations reproduce the experimental structure very well.