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1.
采用NMR方法考察了室温和低温(-78~-60℃)下Pd2X2(dpm)2(X=NCO^-,CH3CO^-2,SCN^-和NO^-3,dpm=Ph2PCH2PPh2)与H2S在CD2Cl2或CDCl3中的反应。结果表明,在X=NCO^-和CH3CO^-2的情况下,H2S优先与这些Pd配合物的阴离子作用生成相应的共轭酸HX和Pd2(SH)2(dpm)2,后者在H2S存在下又进一步转化为Pd2(SH)  相似文献   

2.
采用NMR方法考察了室温和低温(-78~-60℃)下Pd2X2(dpm)2(X=NCO-,CH3CO,SCN-和NO,dpm=Ph2PCH2PPh2)与H2S在CD2Cl2或CDCl3中的反应。结果表明,在X=NCO-和CH3CO的情况下,H2S优先与这些Pd配合物的阴离子作用生成相应的共轭酸HX和Pd2(SH)2(dpm)2,后者在H2S存在下又进一步转化为Pd2(SH)2(dpm)2(μ-S);当X=SCN-和NO时,反应则生成结构可能为[Pd2(H)(SH)(μ-SH)(dpm)2]+的双核Pd配合物。  相似文献   

3.
魏俊发  俞贤达 《分子催化》1998,12(4):271-278
设计合成了5种新型双核铜配合物,用EA,IR,UV-Vis,XPS,EPR等进行了结构表征,并研究了这些Cu2配合物模拟双核铜单加氧酶多巴胺β-羟化酶催化苯乙烯环氧化反应的特征。结果表明,这些配合物具有两种类型的结构:脱质子型Cu2LOH和非脱质子型「(Cu2H2LX)Y」Y(X=Y=Cl^1-,Br^-;X=OH,Y=O2ClO^-2),两类配合物可相互转化。非脱质子型配合物催化PhIO对苯乙烯  相似文献   

4.
根据配合物H2C(P(Ph)2AuX)2(X=I,Cl)和HC(P(Ph)2AuX)3(X=I,Cl)的晶体结构对它们进行了从头算研究,在MP2近似水平下得到绕C-P旋转所产生构象的势能曲线,从而揭示Au(I)-Au(I)相互作用,计算结果表明,在所研究的四个配合物中均存在Au(I)-Au(I)相互作用,该作用较弱,约为10.0~16.5kJ/mol,与Schmibaur的实验估计值和Pyykko  相似文献   

5.
合成了双氯桥双核钯配合物(Ph2P(o-C6H4CO)PdCl)2.2CH2Cl2,进行了元素分析,红外光谱表征和晶体结构测定,研究了其催化氢化性能,有30~80℃,氢分压1.0~5.0MPa的范围内,发现该配合物是催化氢化丙烯酸为丙酸的有效催化剂,晶体(Pd2Cl2(C19H14OP)2.2CH2Cl2属P1空间群,a=0.9304(3)nm,b=1.0392(2)nm,c=1.1062(3)n  相似文献   

6.
合成了两个异亚硝基乙酰丙酮-N-芳基亚胺的Pd(Ⅱ)配合物,PdCl(C6H5-IAI)(C6H5NH2)(1)和PdCl(p-CH3C6H4-IAI)(p-CH3C6H4NH2)(2),并测定了配合物1的晶体结构。配合物1晶体属正交晶系,空间群为Pca21,晶胞参数a=1.8587(4)nm,b=0.9380(2)nm,c=2.1237(4)nm,Z=8,F(000)=1760,μ=1.160m  相似文献   

7.
报道了配合物Eu(XnP)3.3H2O「其中X=H,2-Cl,3-OH,4-Br,3-NO2,2-OCH3,2-CH3,2,4-二氯;P=2-(COO)C6H4CONHC6H5-^-,n=1,2」的制备,并用元素分析,红外光谱,电子反射光谱,热重分析进行了表征。  相似文献   

8.
研究了温和条件下以亚碘酰苯为氧源,非对称性的和对称性的Mn(Ⅲ)Schiff碱配合物「Mn(Ⅲ)(CBP-phen-Xsal)Cl,X=H,Cl,Br,No2,Ch3,OCH3」和「Mn(Ⅲ)(CBP-R-CBP)Y,R=CH2CH2-,-CH(CH3)CH2-,-C6H4-;Y=Cl,OCH3」催化非官能性烯烃苯乙烯,环己烯和α甲基苯乙烯的环氧化反应,结果表明,非对称配合物Mn(Ⅲ)的电子结合能  相似文献   

9.
CS_2在Cu-S键中插入产物(Ph_3P)_2Cu(S_2CSPh)与CH_2Cl_2-C_2H_5OH混合溶剂反应,获得单核铜配合物(Ph_3P)_2Cu(S_2COOC_2H_5)和双核铜配合物(Ph_3P)_3Cu_2Cl_2等化合物晶体,用X-射线单晶衍射法测定前者的晶体结构。晶体的化学式为C_(39)H_(35)CuOP_2S_2,分子量为709.3,空间群P21/n,a=9.329(6),b=18.664(11),c=20,341(13),β=95.59(5)°,V=3525(4)~3,D_c=1.337g/cm~3,Z=4,F(000)=1492,μ=0.852mm~(-1),R=0.045。  相似文献   

10.
王树梅  滕有为 《合成化学》1996,4(2):155-160
合成了配合物trans-PtHXL2(L=PBu3,PPr3,PEt3;X=Cl^-,Br^-,I^-,NO^-3,NO^-2,SCN^-,CN^-),并进行了HNMR研究。测得Pt-H键的H的高场的化学位移δ=-8~-24ppm;J=800~1500Hz和Jp-H=13.0~17.0Hz,鉴定了配合物的顺反异构和键合异构。研究了阴离子配体(X)及中性配体(L)对Pt-H键的δ的关系,Pt-H化学  相似文献   

11.
12.
Summary Bis(2, 2, 2-trichloroethoxy) cobalt(II) and chloro(2, 2, 2-trichloroethoxy)cobalt(II) [Co(OCH2CCl3)2·L] and [CoCl(OCH2CCl3)·L], derivatives (L=tetrahydrofuran, dioxan, triphenylarsine oxide, or pyridine) have been synthesised and characterized. They have tetrahedral geometry both in solution and in the solid state.  相似文献   

13.
Institute of New Chemical Problems, Russian Academy of Sciences, Chernogolovka. Translated from Zhurnal Strukturnoi Khimii, Vol. 33, No. 1, pp. 10–17, January–February, 1992.  相似文献   

14.
15.
In the title 2212‐type superconductor (thallium mercury calcium barium strontium copper oxide), which contains both Tl and Hg in the charge reservoir (CR), Sr is located at both alkali‐earth (AE) metal sites. Ca enters the CR at the same time as Tl shares the smaller AE site, which increases the apical Cu—Cu distance significantly. The structure causes the superconducting Cu–O layers to become significantly puckered.  相似文献   

16.
The synthesis, structural characterization, spectroscopic, and electrochemical properties of N(2)S(2)-ligated Ni(II) complexes, (N,N'-bis(2-mercaptoethyl)-1,5-diazacyclooctane)nickel(II), (bme-daco)Ni(II), and (N,N'-bis(2-mercapto-2-methylpropane)1,5-diazacyclooctane)nickel(II), (bme-daco)Ni(II), derivatized at S with alcohol-containing alkyl functionalities, are described. Reaction of (bme-daco)Ni(II) with 2-iodoethanol afforded isomers, (N,N'-bis(5-hydroxy-3-thiapentyl)-1,5-diazacyclooctane-O,N,N',S,S')halonickel(II) iodide (halo = chloro or iodo), 1, and (N,N'-bis(5-hydroxy-3-thiapentyl)-1,5-diazacyclooctane-N,N',S,S')nickel(II) iodide, 2, which differ in the utilization of binding sites in a potentially hexadentate N(2)S(2)O(2) ligand. Blue complex 1 contains nickel in an octahedral environment of N(2)S(2)OX donors; X is best modeled as Cl. It crystallizes in the monoclinic space group P2(1)/n with a = 12.580(6) ?, b = 12.291(6) ?, c = 13.090(7) ?, beta = 97.36(4) degrees, and Z = 4. In contrast, red complex 2 binds only the N(2)S(2) donor set forming a square planar nickel complex, leaving both -CH(2)CH(2)OH arms dangling; the iodide ions serve strictly as counterions. 2 crystallizes in the orthorhombic space group Pca2(1) with a = 15.822(2) ?, b = 13.171(2) ?, c = 10.0390(10) ?, and Z = 4. Reaction of (bme-daco)Ni(II) with 1,3-dibromo-2-propanol affords another octahedral Ni species with a N(2)S(2)OBr donor set, ((5-hydroxy-3,7-dithianonadiyl)-1,5-diazacyclooctane-O,N,N',S,S')bromonickel(II) bromide, 3. Complex 3 crystallizes in the orthorhombic space group Pca2(1) with a = 15.202(5) ?, b = 7.735(2) ?, c = 15.443(4) ?, and Z = 4. Complex 4.2CH(3)CN was synthesized from the reaction of (bme-daco)Ni(II) with 1,3-dibromo-2-propanol. It crystallizes in the monoclinic space group P2/c with a = 20.348(5) ?, b = 6.5120(1) ?, c = 20.548(5) ?, and Z = 4.  相似文献   

17.
Huang FQ  Ibers JA 《Inorganic chemistry》2001,40(11):2602-2607
The new compounds K(2)TiCu(2)S(4), Rb(2)TiCu(2)S(4), Rb(2)TiAg(2)S(4), Cs(2)TiAg(2)S(4), and Cs(2)TiCu(2)Se(4) have been synthesized by the reactions of A(2)Q(3) (A = K, Rb, Cs; Q = S, Se) with Ti, M (M = Cu or Ag), and Q at 823 K. The compounds Rb(2)TiCu(2)S(4), Cs(2)TiAg(2)S(4), and Cs(2)TiCu(2)Se(4) are isostructural. They crystallize with two formula units in space group P4(2)/mcm of the tetragonal system in cells of dimensions a = 5.6046(4) A, c = 13.154(1) A for Rb(2)TiCu(2)S(4), a =6.024(1) A, c = 13.566(4) A for Cs(2)TiAg(2)S(4), and a =5.852(2) A, c =14.234(5) A for Cs(2)TiCu(2)Se(4) at 153 K. Their structure is closely related to that of Cs(2)ZrAg(2)Te(4) and comprises [TiM(2)Q(4)(2)(-)] layers, which are separated by alkali metal atoms. The [TiM(2)Q(4)(2)(-)] layer is anti-fluorite-like with both Ti and M atoms tetrahedrally coordinated to Q atoms. Tetrahedral coordination of Ti(4+) is rare in the solid state. On the basis of unit cell and space group determinations, the compounds K(2)TiCu(2)S(4) and Rb(2)TiAg(2)S(4) are isostructural with the above compounds. The band gaps of K(2)TiCu(2)S(4), Rb(2)TiCu(2)S(4), Rb(2)TiAg(2)S(4), and Cs(2)TiAg(2)S(4) are 2.04, 2.19, 2.33, and 2.44 eV, respectively, as derived from optical measurements. From band-structure calculations, the optical absorption for an A(2)TiM(2)Q(4) compound is assigned to a transition from an M d and Q p valence band (HOMO) to a Ti 3d conduction band.  相似文献   

18.
19.
Two new transition metal(II) complexes [M(hdpa)2(N(CN)2)2] (M = Mn ( 1 ), Co ( 2 ); hdpa = 2, 2'‐dipyridylamine) have been prepared and characterized structurally and magnetically. Both compounds crystallize in the monoclinic space group C2/c. 1 and 2 are isotypic with the unit cell parameters a = 8.634(9), b = 13.541(14), c = 21.99(2) Å, β = 94.806(18)°, and V = 2562(5) Å3 for 1 , a = 8.617(3) Å, b = 13.629(5)Å, c = 21.598(8)Å, β = 94.593(6)°, and V = 2528.4(15)Å3 for 2 , and Z = 4 for both. According to X‐ray crystallographic studies, each metal(II) ion was six‐coordinated with four nitrogen atoms from two bidentate hdpa ligand and two nitrogen atoms from two N(CN) anions to form slightly distorted octahedrons. Adjacent complex molecules are connected by hydrogen bonds or π···π interactions to form three‐dimensional network. The IR and UV spectroscopy were measured and the magnetic behaviors were investigated.  相似文献   

20.
A new series of anhydrous mixed alkali-metal borophosphates-Li(2) Cs(2) B(2) P(4) O(15) (1), LiK(2) BP(2) O(8) (2), Li(3) K(2) BP(4) O(14) (3), and Li(3) Rb(2) BP(4) O(14) (4)-have been successfully synthesized by using the conventional solid-state reaction method. Compound 1 contains a novel fundamental building unit (FBU), [B(4) P(8) O(30) ], with B/P=1:2. Compound 2 contains an FBU of [B(2) P(4) O(16) ] with B/P=1:2. Compounds 3 and 4 are isotypic, and they have a [B(P(2) O(7) )(2) ] unit as their FBU. In all four compounds, their FBUs are connected through corner sharing to generate layered anionic partial structures, and then further linked with metallic polyhedra to form three-dimensional (3D) frameworks. Most interestingly, three of the four compounds contain direct P-O-P connections in their structures, which is extremely rare among borophosphates. Thermal analyses, IR spectroscopy, and UV/Vis/near-IR diffuse reflectance spectroscopy have also been performed on the four title compounds.  相似文献   

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