氨基酸锑(Ⅲ)双核配合物的固相合成与表征

采用室温固相反应法合成了甘氨酸锑和苯丙氨酸锑双核配合物 ,用元素分析、远红外光谱、热重差热分析及X射线粉末衍射进行了表征 .两种配合物Sb2 L5X·2 5H2 O(L =gly ,phe;X =Cl或I)的晶体结构均属于单斜晶系 ,甘氨酸锑配合物的晶胞参数为 :a =0 6 5 2 6nm ,b =1.2 2 2 7nm ,c=1.3877nm ,β=97.88°,V =1.0 96 8nm3 ,苯丙氨酸锑配合物的晶胞参数为 :a =1.0 6 17nm ,b =0 .7839nm ,c =1.5 72 5nm ,β =92 .32°,V =1.30 77nm3 .远红外光谱表明O ,N ,Cl或I原子参与配位     

异三核氧中心配合物[Cr_2MnO(phCO_2)_6py_3]~+·CrO_3Cl~-的合成、性质及晶体结构研究

合成了一种新型异三核氧中心配合物 ,得到该配合物单晶 ,用元素分析、红外光谱进行了表征 ,研究了配合物的磁性质 .单晶X射线分析表明 ,属六方晶系 ,空间群P6 3 /m ,晶胞参数 :a =b =1.2 92 (1)nm ,c=2 .135 (2 )nm ;F(0 0 0 ) =135 6 ;最终偏离因子R =0 .0 5 0 ,RW=0 .0 6 3.     

奥扎格雷的晶体结构和酸碱性质

通过单晶X射线衍射测定了奥扎格雷的晶体结构. 晶体属正交晶系, 空间群为P212121, 晶胞参数为a=0.62522(6) nm, b=0.91897(8) nm, c=1.95789(18) nm, V=1.12492(18) nm3, Z=4. 通过紫外光谱和荧光光谱pH滴定研究了其基态和激发态酸碱性质, 测定了奥扎格雷的基态和激发态酸式电离常数. 结果表明奥扎格雷是一个pH诱导的荧光分子开关.     

固固反应合成三碘化锑、三碘化铋的硫脲配合物(英文)

通过三碘化锑和三碘化铋与硫脲间的室温固固反应合成了三碘化锑、三碘化铋的硫脲配合物 ,其组成通式为 :M(CS(NH2 ) 2 ) 3 I3 (M =Sb ,Bi) .两种配合物的晶体结构均属于单斜晶系 ,锑配合物Sb(CS(NH2 ) 2 ) 3 I3 的晶胞参数为 :a =1.4 772nm ,b=1.6 5 82nm ,c =2 .0 6 74nm ,β =90 .81°,铋配合物Bi(CS(NH2 ) 2 ) 3 I3 的晶胞参数为 :a =1.4 0 10nm ,b =2 .0 16 8nm ,c =2 .0 397nm ,β =90 .84° .远红外光谱表明硫脲中的N原子而非硫原子参与了配位     

3d过渡金属的2-羰基丙酸(4-吡啶甲酰基)腙配合物的合成, 表征及导电性质研究

本文制备了2-羰基丙酸(4-吡啶甲酰基)腙(H_2PPFH)的六种过渡金属配合物和Mn(Ⅱ)配合物的单晶.通过元素分析、红外和紫外光谱、差热和热重分析对各配合物的结构和性质进行了表征.配合物的通式为M(PPFH)·nH_2O[M(Ⅱ)=Mn,Fe,Co,Ni,Cu,Zn,n=0～2].并通过X射线单晶衍射仪对Mn(Ⅱ)配合物的晶体结构进行了测定.分析表明该晶体属单斜晶系.空间群为P21/n,Z=4,a=1.1252,b=0.9828,c=1.3708nm,β=66.03°,R=0.028.通过对配合物的导电性能的测试,发现它们都具有半导体导电性质.     

3d过渡金属的2-羰基丙酸(4-吡啶甲酰基)腙配合物的合成, 表征及导电性质研究

本文制备了2-羰基丙酸(4-吡啶甲酸基)腙(H2PPFH)的六种过渡金属配合物和Mn(II)配合物的单晶。通过元素分析, 红外和紫外光谱, 差热和热重分析对各配合物的结构和性质进行了表征。配合物的通式为M(PPFH).n[H2O(II)=Mn, Fe, Co,Ni, Cu, Zn, n=0～2]。并通过X射线单晶衍射仪对Mn(II)配合物的晶体结构进行了测定。分析表明该晶体属单斜晶系。空间群为P21/n, Z=4, a=1.1252, b=0.9828,c=1.3708nm, β=66.03°, R=0.28。通过配合物的导电性能的测试, 发现它们都具有半导电性质。     

新型一维链状氰根桥联配合物[Eu(DMF)4(H2O)2Mn(CN)6*H2O]n的合成与晶体结构

以K3Mn(CN) 6,N ,N 二甲基甲酰胺和Eu(NO3) 3·6H2 O为原料合成了新型一维链状氰根桥联配合物[Eu(DMF) 4(H2 O) 2 Mn(CN) 6·H2 O]n,并通过元素分析、红外光谱和紫外光谱进行了表征 .利用单晶X射线四圆衍射测定了配合物的晶体结构 ,结果表明 ,晶体属单斜晶系 ,P2 1/c空间群 ,晶胞参数a =1.2 992 (3)nm ,b =1.2 76 4(3)nm ,c =1.915 4(4 )nm ,β =10 9.42 (3)°,V =2 .995 6 (12 )nm3,Dx=1.5 73Mg/m3,Z =4,R =0 .0 372 ,Rw=0 .0 96 2 ,GOF =1.0 95 .在Eu和Mn原子之间存在两个CN桥 ,配合物呈现一维链状结构 .     

过渡金属氢化物和聚集双键化合物反应的研究——Ⅴ.Cp_2MH_2(M=Zr,Hf)与RNCS(R=n-Bu,c-C_6H_(11),C_6H_5,2-C_(10)H_7)、CS_2的反应

本文研究了Cp_2ZrH_2与CS_2、RNCS(R=n-Bu,c-C_6H_11,C_6H_5,2-C_(10)H_7)和Cp_2HfH_2与c-C_6H_(11)NCS的反应,探讨了在这类新型脱硫反应中锆氢与铪氢配合物化学反应性能上的差异.从以上反应中分别得到两个硫桥同核双金属配合物(Cp_2MS)_2(1,M=Zr;2,M=Hf)和有机铪配合物Cp_2Hf[SC(H)NR]_2(3,R=c-C_6H_(11)).产物结构由元素分析、IR、~1H和~(13)C NMR及MS谱分析鉴定,产物1的晶体结构由X光四圆衍射方法测定,有机产物X=CH_2和CH_3X(H)(X=S,NR)由GC-MS谱分析测定.     

一维链状氰根桥联配合物[Pr(bet)_2(H_2O)_3Fe(CN)_6]_n的合成、晶体结构和磁性

以K3Fe(CN) 6 ,甜菜碱和Pr(NO3) 3·6H2 O合成了一维链状氰根桥联配合物 [Pr(bet) 2 (H2 O) 3Fe(CN) 6 ] n,并通过元素分析、红外光谱进行了表征。利用单晶X射线四圆衍射测定了配合物的晶体结构 ,晶体属正交晶系 ,P2 1 2 1 2 1 空间群 ,晶胞参数a =0 9634 ( 2 )nm ,b =1 45 5 6( 3)nm ,c =1 7798( 9)nm ,V =2 495 9( 9)nm3,Dc=1 70 6Mg·m3,Z =4,GOF =0 970 ,F( 0 0 0 ) =12 84,R1 =0 0 30 7。变温磁化率 ( 1 8～ 30 0K)表明在Pr3 和Fe3 离子间存在弱的反铁磁相互作用。     

多硫化钴CoSx结构与稳定性的密度泛函研究

采用量子化学密度泛函方法计算得到CoSx(x=1~6)6组化合物的同分异构体及CoS2的晶体结构.对其分子结构与稳定性、光谱性质及其晶体结构性质进行了分析讨论.发现CoSx和晶体结构中Co原子均带部分正电荷,S原子均带部分负电荷;Co可与不同比例的S原子形成配位键,并有很强的结合能.随着S原子比例的增加配位键伸长,结合能增大.计算的晶体结构数据很好地与实验测定结构吻合.计算结果可为锂插层研究提供有用的信息.     

Structural, spectroscopic and thermal characterization of 2-tert-butylaminomethylpyridine-6-carboxylic acid methylester and its Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and UO(2)(II) complexes

Fe(III), Co(II), Ni(II), Cu(II), Zn(II) and UO(2)(II) complexes with the ligand 2-tert-butylaminomethylpyridine-6-carboxylic acid methylester (HL(2)) have been prepared and characterized by elemental analyses, molar conductance, magnetic moment, thermal analysis and spectral data. 1:1 M:HL(2) complexes, with the general formula [M(HL(2))X(2)].nH(2)O (where M = Co(II) (X = Cl, n = 0), Ni(II) (X = Cl, n = 3), Cu(II) (grey colour, X = AcO, n = 1), Cu(II) (yellow colour, X = Cl, n = 0) and Zn(II) (X = Br, n = 0). In addition, the Fe(III) and UO(2)(II) complexes of the type 1:2 M:HL(2) and with the formulae [Fe(L(2))(2)]Cl and [UO(2)(HL(2))(2)](NO(3))(2) are prepared. From the IR data, it is seen that HL(2) ligand behaves as a terdentate ligand coordinated to the metal ions via the pyridyl N, carboxylate O and protonated NH group; except the Fe(III) complex, it coordinates via the deprotonated NH group. This is supported by the molar conductance data, which show that all the complexes are non-electrolytes, while the Fe(III) and UO(2)(II) complexes are 1:1 electrolytes. IR and H1-NMR spectral studies suggest a similar behaviour of the Zn(II) complex in solid and solution states. From the solid reflectance spectral data and magnetic moment measurements, the complexes have a trigonal bipyramidal (Co(II), Ni(II), Cu(II) and Zn(II) complexes) and octahedral (Fe(III), UO(2)(II) complexes) geometrical structures. The thermal behaviour of the complexes is studied and the different dynamic parameters are calculated applying Coats-Redfern equation.     

Spectroscopic characterization of chromium(III), manganese(II) and nickel(II) complexes with a nitrogen donor tetradentate, 12-membered azamacrocyclic ligand

The complexes of Cr(III), Mn(II) and Ni(II) were synthesized with macrocyclic ligand i.e. 5,11-dimethyl-6,12-diethyl-dione-1,2,4,7,9,10-hexazacyclododeca -1,4,6,10-tetraene. The ligand (L) was prepared by [2+2] condensation reaction of 2,3-pentanedione and semicarbazide hydrochloride. These complexes were found to have the general composition [Cr(L)X(2)]X and [M(L)X(2)] (where M=Mn(II) and Ni(II); X=Cl(-), NO(3)(-), (1/2)SO(4)(2-), NCS(-) and L=ligand [N(6)]). The ligand and its transition metal complexes were characterized by the elemental analysis, molar conductance, magnetic susceptibility, mass, IR, electronic and EPR spectral studies. On the basis of IR, electronic and EPR spectral studies, an octahedral geometry has been assigned for these complexes except sulphato complexes which are of five coordinated geometry.     

Spectroscopic approach in characterization of chromium(III), manganese(II), iron(III) and copper(II) complexes with a nitrogen donor tetradentate, 14-membered azamacrocyclic ligand

The complexes of Cr(III), Mn(II), Fe(III) and Cu(II) were synthesized with the macrocyclic ligand i.e. 2,3,9,10-tetraketo-1,4,8,11-tetraazacyclotetradecane. The ligand was prepared by the [2 + 2] condensation reaction of diethyloxalate and 1,3-diamino propane. These complexes were found to have the general composition M(L)X3 and M'(L)X2 [where M = Mn(II) and Cu(II), M' = Cr(III) and Fe(III), L = ligand (N4) and X = Cl-, NO3-, 1/2SO4(2-) and [CH3COO-]. The ligand and its transition metal complexes were characterized by the elemental analyses, molar conductance, magnetic susceptibility, mass, IR, electronic, and EPR spectral studies. On the basis of IR, electronic and EPR spectral studies an octahedral geometry has been assigned for Cr(III), Mn(II) and Fe(III) and a tetragonal geometry for Cu(II) complexes.     

Spectroscopic and biological approach of Ni(II) and Cu(II) complexes of 2-pyridinecarboxaldehyde thiosemicarbazone

Ni(II) and Cu(II) complexes having the general composition [M(L)(2)X(2)] [where L=2-pyridinecarboxaldehyde thiosemicarbazone, M=Ni(II) and Cu(II), X=Cl(-), NO(3)(-) and 1/2 SO(4)(2-)] have been synthesized. All the metal complexes were characterized by elemental analysis, molar conductance, magnetic moment, mass, IR, EPR and electronic spectral studies. The magnetic moment measurements of the complexes indicate that all the complexes are of high-spin type. On the basis of spectral studies an octahedral geometry has been assigned for Ni(II) complexes whereas tetragonal geometry for Cu(II) except [Cu(L)(2)SO(4)] which posseses five coordinated geometry. The ligand and its metal complexes were screened against phytopathogenic fungi and bacteria in vitro.     

Synthesis and characterization of copper-, zinc-, manganese-, and cobalt-substituted dimeric heteropolyanions, [(alpha-XW9O33)2M3(H2O)3](n-) (n = 12, X =As(III), Sb(III), M = Cu(2+), Zn(2+); n = 10, X = Se(IV), Te(IV), M = Cu(2+) and [(alpha-AsW9O33)2WO(H2O)M2(H2O)2](10-) (M = Zn(2+), Mn(2+), Co(2+)

Interaction of the lacunary [alpha-XW9O33](9-) (X = As(III), Sb(III)) with Cu(2+) and Zn(2+) ions in neutral, aqueous medium leads to the formation of dimeric polyoxoanions, [(alpha-XW9O33)2M3(H2O)3](12-) (M = Cu(2+), Zn(2+); X = As(III), Sb(III)), in high yield. The selenium and tellurium analogues of the copper-containing heteropolyanions are also reported: [(alpha-XW9O33)2Cu3(H2O)3](10-) (X = Se(IV), Te(IV)). The polyanions consist of two [alpha-XW9O33] units joined by three equivalent Cu(2+) (X = As, Sb, Se, Te) or Zn(2+) (X = As, Sb) ions. All copper and zinc ions have one terminal water molecule resulting in square-pyramidal coordination geometry. Therefore, the title anions have idealized D3h symmetry. The space between the three transition metal ions is occupied by three sodium ions (M = Cu(2+), Zn(2+); X = As(III), Sb(III)) or potassium ions (M = Cu(2+); X = Se(IV), Te(IV)) leading to a central belt of six metal atoms alternating in position. Reaction of [alpha-AsW9O33](9-) with Zn(2+), Co(2+), and Mn(2+) ions in acidic medium (pH = 4-5) results in the same structural type but with a lower degree of transition-metal substitution, [(alpha-AsW9O33)2WO(H2O)M2(H2O)2](10-) (M = Zn(2+), Co(2+), Mn(2+)). All nine compounds are characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental analysis. The solution properties of [(alpha-XW9O33)2Zn3(H2O)3](12-) (X = As(III), Sb(III)) were also studied by 183W-NMR spectroscopy.     

Structural and spectral studies of palladium(II) and platinum(II) complexes derived from N,N,N,N-tetradentate macrocyclic ligands

Palladium(II) and platinum(II) complexes having the general composition [M(L)] X2 (where M=Pd(II) and Pt(II), L=3,4,12,13-tetraphenyl-2,5,11,14,19,20-hexaaza tricyclo [13.3.1.1.(6-10)] cosa-1(19), 2,4,6,8,10,(20),11,13,15,17-decaene (L1); 3,4,13,14-tetraphenyl-2,5,12,15-tetraaza tricyclo [11,0,0,(6-11)] cosa-1(16),2,4,7,9,6(11),12,14,17, 19-decaene (L2); 2,3,8,9-tetraphenyl-1,4,7,10-tetraaza cyclododeca-1,3,7,9-tetraene (L3) and X=Cl(-)) have been synthesized. The ligands were characterized on the basis of elemental analyses, IR, 1H NMR and EI mass spectral studies while that of the complexes were characterized on the basis of elemental analyses, molar conductance measurements, magnetic susceptibility measurements, IR, and electronic spectral techniques. All the complexes were found to be diamagnetic. The structures consist of monomeric units in which the Pd(II) and Pt(II) atoms exhibit square planar geometry.     

Spectroscopic studies on Mn(II), Co(II), Ni(II), and Cu(II) complexes with N-donor tetradentate (N4) macrocyclic ligand derived from ethylcinnamate moiety

Manganese(II), cobalt(II), nickel(II), and copper(II) complexes are synthesized with a novel tetradentate ligand, viz. 1,5,9,13-tetraaza-6,14-dioxo-8,16-diphenylcyclohexadecane (L) and characterized by the elemental analysis, molar conductance measurements, magnetic susceptibility measurements, mass, 1H NMR, IR, electronic, and EPR spectral studies. The molar conductance measurements of the complexes in DMSO correspond to be nonelectrolyte nature for Mn(II), Co(II), and Cu(II) whereas 1:2 electrolytes for Ni(II) complexes. Thus, these complexes may be formulated as [M(L)X(2)] and [Ni(L)]X(2), respectively (where M = Mn(II), Co(II), and Cu(II) and X = Cl- and NO(3-)). On the basis of IR, electronic, and EPR spectral studies an octahedral geometry has been assigned for Mn(II) and Co(II) complexes, square-planar for Ni(II) whereas tetragonal for Cu(II) complexes. The ligand and its complexes were also evaluated against the growth of bacteria and pathogenic fungi in vitro.     

Synthesis and characterization of Ru(III), Rh(III), Pt(IV) and Ir(III) thiosemicarbazone complexes

Ru(III), Rh(III), Pt(IV) and Ir(III) complexes of 2-furfural thiosemicarbazone as ligand have been synthesised. These complexes have the composition [M(ligand)₂X₂]X (M = Ru(III) Rh(III) and Ir(III) X = Cl and Br) and [Pt(ligand)₂ X₂] X₂ (X = Cl, Br and 1/2SO₄). The deprotonated ligand forms the complexes of the formulae M(ligand-H)₃ and Pt(ligand-H)₃Cl. All these complexes have been characterized by elemental analysis, magnetic measurements, electronic and infrared spectral studies. All the complexes are six-coordinate octahedral.     

Copper(II), nickel(II) and cobalt(II) complexes of pyridyl and quinolylhydrazones of isatin and methylisatin: Ligand dependent stereochemistry

Summary [M^II(Lig)X] (M = Cu^II, Ni^II or Co^II and Lig = deprotonated pyridylhydrazone, (IPH-H), quinolylhydrazone of isatin (IQH-H) andN-methylisatin (MIQH-H)) have been characterized by magnetic susceptibility measurements, optical spectra and infrared spectral studies. [M^II(IPH-H)Cl] (M = Ni^II and Co^II) are tetrahedral while [M^II(MIQH-H)X] (M = Ni^II or Co^II and X = Br or Cl), [Ni^II(IQH-H)Br] and [Cu^II(IPH-H)Cl] are planar.     

Spectral and magnetic studies on manganese(II), cobalt(II) and nickel(II) complexes with Schiff bases

Mn(II), Co(II) and Ni(II) complexes of 2-methylcyclohexanone thiosemicarbazone(MCHTSC L(1)) and 2-methylcyclohexanone-(4)N-methyl-3-thiosemicarbazone (MCHMTSC L(2)), general composition [M(L)(2)X(2)] (where M = Mn(II), Co(II), Ni(II), L = L(1) or L(2) and X = Cl(-), NO(3)(-), and [(1/2)SO(4)(2-)) have been synthesized and characterized by elemental analysis, magnetic susceptibility measurements, UV-vis, IR, EPR, and mass spectral studies. Various physico-chemical techniques suggest an octahedral geometry for all the complexes.