超分子化合物[M(4,4''''-bipy)2(H2O)4]·(4,4''''-bipy)2·(3,5-diaba)2·8H2O](M=Co,Ni,Cd)的合成及晶体结构

合成了3个超分子化合物[M(4,4'-bipy)2(H2O)4]·(4,4'-bipy)2·(3,5-diaba)2·8H2O(M=Co(1),Ni(2),Cd(3);4,4'-bipy=4,4'-联吡啶;3,5-diaba=3,5-二氨基苯甲酸阴离子),用红外光谱、元素分析及X-射线单晶衍射进行了表征。3个化合物的晶体都属于单斜晶系,空间群为P2/c。晶体学参数:化合物1:a=0.9389(2)nm,b=0.7751(1)nm,c=3.9284(6)nm,β=90.14(2)°,V=2.85880(69)nm3,Z=4,Dc=1.397g·cm-3,F(000)=1266,μ=0.380mm-1,R1=0.0349,wR2=0.0829;化合物2:a=0.9383(2)nm,b=0.7753(1)nm,c=3.9218(6)nm,β=90.09(1)°,V=2.85280(68)nm3,Z=2,Dc=1.399g·cm-3,F(000)=1268,μ=0.420mm-1,R1=0.0366,wR2=0.0805;化合物3:a=0.94091(13)nm,b=0.77885(11)nm,c=3.9712(5)nm,β=90.10°,V=2.9102(7)nm3,Z=2,Dc=1.433g·cm-3,F(000)=1308,μ=0.454mm-1,R1=0.0468,wR2=0.0964。3,5-diaba未参与配位,在配位阳离子[M(4,4'-bipy)2(H2O)4]2 中,金属离子M髤与来自2个4,4'-bipy的2个氮原子和4个水分子的氧原子配位,呈八面体的几何构型。分子中还存在未配位的4,4'-bipy。通过配位阳离子、游离4,4'-bipy及未配位的3,5-diaba间的丰富氢键,构建成具有三维结构的超分子化合物。     

Syntheses and Structures of Two New Cobalt Supramolecular Complexes, [Co(4,4'-bipy)_2(H_2O)_4]· [Co_2(4,4'-bipy)3O(H_2O)_8]·2TST·2(4,4'-bipy)·4H_2 and [Co(4,4'-bipy)_2(H_2O)_4]DSNT'4,4'-bipy

Two new cobalt(Ⅱ) supramolecular complexes [Co(4,4'-bipy)_2(H_2O) _4]·[Co_2(4,4'-bipy)3-(H_2O) _8]·2TST-2(4,4'-bipy)·4H_2O 1 and [Co(4,4'-bipy) _2(H_2O) _4]DSNT·4,4'-bipy 2 based upon the assembly of Co(Ⅱ), 4,4'-bipyridine (4,4'-bipy) and two new multifunctional organic ligands, 2,4,6-tris(4-sulfophenyl-amino)-1,3,5-triazine (H_3TST) and 2,4-bis(p-sulfanilato)-6-diethylamino-1,3,5-triazine (H_2DSNT), have been prepared by hydrothermal method and characterized by elemental analysis, IR spectrum, and single-crystal X-ray diffraction. The crystal structure of 1 is of monoclinic, space group P2_(1/n) with α= 13.599(4), b = 18.988(6), c = 22.995(7) A, β = 90.273(6)°, V= 5938(3) A~3, Z = 4, C_(56)H_(59)CO_(1.5)N_(13)O_(17)S_3, M_r = 1370.74, D_c = 1.533 g/cm~3,μ = 0.613 mm~(-1), F(000) = 2842, GOOF = 1.018, the final R = 0.0796 and wR = 0.1498 for 9019 observed reflections with I > 2o(I). The crystal structure of 2 belongs to the monoclinic system, space group C2/c with α = 18.864(6), b = 14.283(5), c = 20.246(7) A, β = 107.799(6)°, V = 5194(3) A~3, Z = 4, C_(49)H_(52)CoN_(12)O_(10)S_2, M_r = 1092.08, D_c = 1.397 g/cm~3, μ= 0.480 mm~(-1), F(000) = 2276, GOOF = 1.059, the final R = 0.0665 and wR = 0.1900 for 4887 observed reflections with I> 2σ(I). The results of X-ray crystal structure analysis revealed that complexes 1 and 2 exhibit layered supramolecular frameworks stabilized by electrostatic interactions, π-π interactions and hydrogen bonds.     

基于柔性四羧酸的三个一维/二维/三维Zn(Ⅱ)/Co(Ⅱ)配合物的晶体结构及荧光性质（英文）

通过水热/溶剂热合成的方法制备了3个Zn(Ⅱ)/Co(Ⅱ)配合物{[Zn(H_2L)(H_2O)_3]·H_2O·0.5H_4L}_n(1)、{[Co(L)_(0.5)(4,4'-bpy)]·0.5H_2O}_n(2)和{[Co(L)_(0.5)(pbmb)(H_2O)]·H_2O}(3)(H_4L=5,5'-(hexane-1,6-diyl)-bis(oxy)diisophthalic acid,4,4'-bpy=4,4'-bipyridine,pbmb=1,1'-(1,3-propane)bis-(2-methylbenzimidazole))。结构分析表明配合物1为一维链结构。2为拓扑符号为(6~4·7·8)(6·7~2)的三重穿插网络结构。3是拓扑符号为(4·6~2)(4~2·6~2·8~2)的(3,4)-连接的二维网络结构。配合物1呈现出较好的荧光性质。     

双核钴(Ⅱ)配合物[Co_2(2,2'-bpy)_2(μ-L)_2(L)_2(μ-H_2O)](HL=4-fluorobenzoic acid)的水热合成、晶体结构和磁性研究

通过水热法合成了4-氟苯甲酸桥联的新型双核钴(Ⅱ)配合物[Co2(2,2-bpy)2(μ-L)2(L)2(μ-H2O)](HL=4-fluorobenzoic acid)(1)并测定了其晶体结构。结果表明配合物1属单斜晶系,空间群C2/c,晶胞参数为a=22.204(4),b=15.777(3),c=15.184(3),β=123.71(3)°,Z=4,Mr=1004.65,V=4424.7(15)3,μ=0.829 mm-1,Dc=1.508g/cm3,F(000)=2048,R1=0.0386,wR2=0.1006。配合物1具有双核蝴蝶状结构,中心钴(Ⅱ)离子处于CoN2O4八面体配位环境中,每个钴(Ⅱ)分别与来自一个2,2-联吡啶的2个N原子、三个4-氟苯甲酸根的3个O原子和一个配位水分子的1个O原子配位,两个钴(Ⅱ)被2个4-氟苯甲酸根和1个桥联水分子桥联为双核蝴蝶状结构。分子间通过氢键和π-π堆积作用,构成了3D超分子网状结构。变温磁化率测试结果表明该化合物在5~300K范围内显示反铁磁性。     

{(n-Bu4N)2[Mo2O2S6Cu6Br4(4,4'-bipy)3]·0.5H2O}n的合成与晶体结构

Cluster coordination polymer {(n-Bu4N)2[Mo2O2S6Cu6Br4(4,4'-bipy)3]·0.5H2O)}n (4,4'-bipy=4,4'-bipyridine),has been synthesized and characterized by X-ray crystallography. The polymeric anion {[Mo2O2S6Cu6Br4(4,4'-bipy)3]2-}n is composed of secondary building units (SBUs) [MoOS3Cu3], Br atoms and 4,4'-bipy ligands. Two secondary building units [MoOS3Cu3] and a double parallel 4,4'-bipy ligands form an octanuclear rectangular metallamacrocycle with the dimension of 1.13×0.39 nm2, which is further connected by single bridging 4,4'-bipy ligands to form a 1D zigzag structure. Crystal data for compound 1: C62H97N8O2.50S6Br4Cu6Mo2,M=2 079.68, Triclinic, P1, a=0.982 40 (10) nm, b=1.293 70(10) nm, c=1.737 4(2) nm, α=97.810(10)°,β=101.390(10)°,γ=108.520(10)°, V=2.005 1(4) nm3, Z=2, Dc=1.722 g·cm-3, F(000)= 1039,μ (Mo Kα)=4.055 mm-1, the final R=0.040 7, wR2=0.097 2. CCDC: 236407.     

Co(2,2'-bipy)(H2O)V2O6的合成及其晶体结构

以Co(NO3)2,2,2'-联吡啶(2,2'-bipy)及NaVO3为原料,采用水热法于200 ℃合成了一种新的有机-无机杂化材料--Co(2,2'-bipy)(H2O)V2O6(1),其结构经IR,热重分析及X-射线单晶衍射表征.结果表明,1属于单钭晶系,空间群为P21/c,晶胞参数为:a=7.855 6(3)(A),b=21.056 2(5)(A),c=9.552 1(6)A,α=90.000°,β=110.236(5)°,γ=90.000°,V=1 423.65(8)(A)3,Z=2,Dc=2.126 g·cm-3,μ(Mo Kα)=2.548mm-1,R1=0.058 6,wR2=0.093 5.1为一种二维层状结构,由[VO4]四面体通过共顶点构成的一维钒氧链,链与链之间以[Co(2,2'-bipy)(H2O)]2 基团连接而成.     

由联苯四羧酸配体构筑的一维锰(Ⅱ)和二维铜(Ⅱ)配位聚合物的合成、晶体结构及磁性质（英文）

采用水热方法,用2种联苯四羧酸配体(2,4-H4bpta和3,5-H4bpta)和4,4'-联吡啶(4,4'-bipy)或2,2'-联吡啶(2,2'-bipy)分别与MnCl_2·4H_2O和CuCl_2·H_2O反应,合成了一个具有一维双螺旋链结构的配位聚合物[Mn(μ3-2,4-H2bpta)(4,4'-bipy)2]n(1)和一个二维层状配位聚合物{[Cu(μ4-3,5-bpta)0.5(2,2'-bipy)(H_2O)]·H_2O}n(2),并对其结构和磁性质进行了研究。结构分析结果表明2个配合物分别属于单斜晶系,P21/c和C2/c空间群。配合物1具有一维双螺旋链结构,而且这些一维链通过O-H…N氢键作用进一步形成了二维超分子网络。而配合物2具有二维层状结构。研究表明,配合物1中相邻锰离子间存在铁磁相互作用。     

铜-有机多酸配合物[CuI(2,2'-bipy)_2]{[CuII(2,2'-bipy)_2]_2(BW_(12)O_(40))}·4H_2O的原位合成、晶体结构与表征

在水热条件下,K5BW12O4·nH2O,CuSO4·5H2O,2,2'-联吡啶-3,3'-二羧酸在水溶液中进行原位反应,得到一维链状化合物[CuI(2,2'-bipy)2]{[CuII(2,2'-bipy)2]2(BW12O40)}·4H2O,并对其进行了元素分析,IR,TG,CV和单晶X射线衍射表征.结果表明,化合物属于单斜晶系,P21/n空间群,晶胞参数a=1.88365(14)nm,b=2.04178(15)nm,c=2.16724(16)nm,α=90°,β=96.6720(10)°,γ=90°,V=8.2786(11)nm3,Z=4,Dc=3.255g/cm3,R1=0.0575,wR2=0.1073.化合物分子结构单元由1个铜-有机多酸阴离子{[CuII(2,2'-bipy)2]2(BW12O40)}-,1个配位阳离子[CuI(2,2'-bipy)2]+,4个结晶水分子构成.化合物分子通过氢键和π-π堆积作用形成二维超分子体系.电化学研究表明,化合物存在三步氧化还原过程.     

钴配合物[Co_2(H_2O)_8(C_(10)H_8N_2)_2]·(HO_3PCH_2CH_2SO_3)(SO_4)(H_2O)_4的合成与晶体结构研究

用硫酸钴、4,4'-联吡啶和2-磺酸基乙基膦酸合成了一个新颖的钴化合物:[Co_2(H_2O)_8(C_(10)H_8N_2)_2]·(HO_3PCH_2CH_2SO_3)(SO_4)(H_2O)_4,并对其进行了红外.元素分析、热重测试,通过单晶衍射仪测定了其晶体结构.结果表明,配合物属单斜晶系C2/c空间群,分子式为C_(22)H_(45)Co_2N_4O_(22)PS_2,分子量为930.57,晶胞参数为a=19.8456(18),b=11.2957(10),c=34.719(3)(A),β=106.095(3)°,晶胞体积为7477.9(12)(A)~3,Z=8,Dc=1.653 g/cm~3,F(000)=3856,μ=1.131 mm~(-1),最终残差因子R_1=0.0726,wR_2= 0.1719(相对于5612个I>2σ(I)的可观测衍射点).在这个化合物中,二齿配体4,4'-联吡啶把Co(II)桥连成[Co(4,4'-bipy)]~(2+)链.化合物中的[Co(4,4'-bipy)]~(2+)链有三个不同的朝向.2-磺酸基乙基膦酸没有参与配位而是做为一个有机模板剂填充在[Co(4,4'-bipy)]~(2+)链形成的空隙中.     

(E）-2-［2-(4-甲氧基苯基）乙烯基］-8-乙酰氧基喹啉的合成、谱学表征及其荧光性能

通过8-羟基喹哪啶和4-甲氧基苯甲醛的缩合反应合成了一种新的化合物((E)-2-[2-(4-甲氧基苯基)乙烯基]-8-乙酰氧基喹啉,化合物1),并通过NMR、LC-MS和元素分析表征其结构;利用X-射线单晶衍射仪测定了该化合物的晶体结构,目标分子属于单斜晶系,C2/c空间群,晶胞参数为a=16.375(10),b=19.476(12),c=10.571(6);V=3371(3)3,Z=8,Dc=1.258 mg/m3,最终R1=0.060 8,wR2=0.1471。基于多种分子间氢键和π…π堆积作用,分子在固相中堆积成三维超分子结构。文中还对化合物1的荧光性能进行了研究。     

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.