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1.
1 INTRODUCTION The design and synthesis of metal-organic frame- work structures have been extensively studied due to their unexpected properties for potential applications as functional materials as well as the intriguing ar- chitectures and topologies[1~4]. When rigid bifunc- tional ligands are used to connect metal centers, to- pology of the network is usually determined by the coordination geometry of the central metal prefer- ence. Contrary to rigid ligands, the bifunctional fle- xib…  相似文献   

2.
1 INTRODUCTION Synthesis of transition metal complexes with Schiff-base has been a subject of considerable importance [1,2]. They are not only good complexing agents for Schiff-base, but also good bactericide and antitumour agent [3,4]. At present, there is a spectacular growth in this field. Recently, some bridged binuclear complexes have received much attention on account of their biological relevance and condensed-phase magnetic properties[5,6]. Especially, the complexes containin…  相似文献   

3.
Reactions of CuSCN with tetramethylthiuram disulfide in CH3CN in the presence of styrene and N,N,N′,N″,N″‐pentamethyldiethylenetriamine gave rise to a new copper(I) complex ofN,N′‐dimethyldithiocabamate ([CU(S2CNMe2)]2)n. The title compound crystallized in the triclinic P‐1 space group with lattice parameters a=0.7610(4) nm, b=0.8911(4) nm, c=0.9268(5) nm, α=68.66(1)°, β=83.88(2)°, γ=79.31(2)°, V=0.5748(5) nm3, Z=2. The compound has a unique 1D chain structure composed of CuSCSCuSCS eight‐membered rings and a pair of CU? S bonds, the structure of which has been determined by singlecrystal X‐ray crystallography. The isolation of this compound may provide some helpful information for the cause of the induction periods of the reverse atom transfer radical polymerization.  相似文献   

4.
A new copper(H) complex [Cu2(DMF)(H2O)(C7H4NO4)2(C7H3NO4)]2-3.5DMF has been synthesized and its structure was determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P1^- with a = 10.722(3), b = 18.170(4), c = 20.923(7)A,α = 105.297(9), β = 101.701(10), γ = 105.74(1)°, V= 3615(1)A^3, Z = 2, C58.50H64.50Cu4N1l.50O3150, Mr = 1686.90, Dc = 1.550 g/cm^3,μ= 1.255 mm^-1, F(000) = 1728.00, T = 150(2) K, the final R = 0.0640 and wR = 0.173 for 11310 observed reflections with I 〉 2σ(I). In the crystal, each formular unit consists of two dinuclear copper(H) compounds, between which the O-H…O hydrogen bonds exist. Each Cu^Ⅱ cation is six-coordinated in an octahedral geometry. The intermolecular hydrogenbonding interaction leads to a 3-D framework of the title compound.  相似文献   

5.
尹汉东  薛绳才  王其宝 《中国化学》2004,22(10):1187-1191
Introduction Dimeric tetraorganodistannoxanes are a kind of in-teresting organotin oxo clusters and have attracted con-siderable attention during the last several decades, in view of their unique structural features1-5 as well as their applications as biocides6,7 and in homogenous cataly-sis.8,9 In the solid state, they contain characteristic Sn4O2X2Y2 structural motifts with staircase or ladder arrangements, a planar four-membered Sn2O2 ring and, generally, penta-coordination around the tin…  相似文献   

6.
1 INTRODUCTION Current research interest is focused on the designof structures built up from octahedral and tetrahedralbuilding blocks[1]. During the wide investigations intransition-metal phosphates for many years, a num-ber of new mixed transition-metal phosphates havebeen reported[2]. A great number of manganese phos-phates were largely discovered as minerals[1]. On theother hand, many vanadium phosphates have alsobeen prepared recently partly because of their poten-tial applications …  相似文献   

7.
1 INTRODUCTION Coordination polymers[1~3] with one-, two- or three-dimensional structure and supramolecular compounds[4, 5] formed by weak interactions, such as hydrogen bonds, Van Der Waals’ forces, short-range exclusion forces, etc., have a variety of possible applications ranging from semicon- ductor to catalysts and potentially valuable pro- perties reminiscent of zeolites. So, considerable increasing attention has been focused on the syn- thesis or building of these coordination po…  相似文献   

8.
9.
1 INTRODUCTION The polydentate ligand nitrilotripropionic acid, H3ntp[N(CH2CH2COOH)3], has attracted conside- rable research interest in constructing coordination polymers, designing organic-inorganic hybrid mate- rials[1], synthesizing supramolecular compounds[2], etc. due to its high degree of flexibility with three carboxylic acid moieties allowing for a variety of coordination through oxygen atoms[3]. It also pro- vides other versatile properties such as the possibili- ty of inter-…  相似文献   

10.
李秀梅  王庆伟  李丹  赵霞  高广刚 《结构化学》2007,26(11):1341-1344
A new one-dimensional copper coordination polymer chain has been prepared and fully characterized by single-crystal X-ray diffraction,elemental analyses and IR spectroscopy. The compound {[Cu2(C2O4)2(inta)4](inta)}n1 crystallizes in the triclinic system,space group P1,with a=8.4722(5),b=10.9825(6),c=11.6128(6),α=104.8050(10),β=102.5740(10),γ= 109.6890(10)o,V=927.18(9)3,Mr=929.79,Z=1,Dc=1.665 g/cm3,F(000)=475,μ=1.231 mm-1,R=0.0453 and wR=0.1185 for 3290 observed reflections (I > 2σ(I)). Of the compound,the Cu center is octahedrally coordinated with oxalate acting as a tetra-dentate ligand coordinated to the copper atom and each inta serving as a terminal ligand by employing only one N-donor to coordinate with the Cu center. An infinite {Cu2(C2O4)2}∞ chain is formed along the c axis. Furthermore,the 1D chains are held together via extensive hydrogen-bonding interactions to generate a three-dimensional network with 1D channels (ca. 5.491×11.507) where inta molecules are filled.  相似文献   

11.
1 INTRODUCTION Many efforts have been devoted to the synthesis of metal organophosphonates during the past three decades because of their rich variety of structural chemistry as well as their practical or potential applications in the areas of adsorption/desorption[1, 2], catalysts[3, 4], meso-/microporous materials[5~7] and intercalation chemistry[8~16]. One encouraging deve- lopment direction is the use of phosphonic acids with bi- and trifunctional groups, such as amino, hydroxyl and…  相似文献   

12.
A novel zinc(H) metal phosphonate compound [Zn(phen)(m-OOCC6H4PO3H)] 1 (phen = phenanthroline) has been synthesized under hydrothermal conditions. Single-crystal X-ray structure analysis reveals that compound 1 belongs to the triclinic system, space group P1 with a = 9.3356(19), b = 10.203(2),c = 10.743(2)A,α = 76.3030(70), β= 69.2317(51), y = 84.3833(74)°,V = 929.4(3) ,A3, Z = 2, C2OH15N2O5PZn, Mr = 459.68, Dc = 1.643 g/cm^3,μ= 1.444, mm^-1, F(000) = 468, the final R = 0.0330 and wR = 0.0848. In the structure, the central ion Zn(H) is five-coordinated, linking three O atoms with one from carboxyl and the other two from phosphonyl group. The remained two coordinate sites were occupied by two N atoms from one phen molecule to form the asymmetric unit. Then every two adjacent asymmetric units are bridged by the O atoms from phosphonate group and carboxyl to give rise to a 1D chain along the b axis. These chains are constructed by weak π-π stacking interactions and C-H…π interactions to generate a 3D supramolecular framework.  相似文献   

13.
王子梁  魏林恒  王敬平 《化学研究》2004,15(1):27-29,32
利用Na2MoO4·2H2O,MoO3,乙二胺,和H2O通过水热合成法合成了一维锯齿状化合物[(en)2(Mo6O20H4)]n.晶体解析表明,该化合物属于单斜晶系,P21/n空间群,a=0.80680(16)nm,b=1.4371(3)nm,c=0.88874(18)nm,β=97.89(3)°,V=1.0207(4)nm3,Z=2,Dc=3.305Mg·m-3,μ=3.681mm-1,F(000)=960.该化合物结构单元由二个游离的乙二胺分子和一个阴离子Mo6O4-20阴离子中,六20构成.在Mo6O4-个钼原子和八个相邻的氧原子构成两个八员环,在每个八员环的两侧分别存在着一个与三个钼原子相连的桥氧.  相似文献   

14.
采用中温水热方法合成了新化合物(C2H10N2)[H3As3O10].利用X射线粉末衍射仪、红外光谱仪、热重分析仪及X射线单晶衍射仪表征了产物的结构.结果表明:该化合物属于单斜晶系,P2(1)/n空间群;晶胞参数为a=0.808 3(6)nm,b=1.446 9(9)nm,c=0.892 0(8)nm,β=98.16°,V=1.032 7(14)nm3,Z=4,F(000)=864,R1=0.025 3,wR2=0.093 4.其化学式为C2H13As3N2O10,分子量Mr=449.90.该化合物是由有机胺阳离子支撑的第一个具有一维链状结构的砷酸盐化合物,相邻的砷酸盐链通过AAAA堆积方式形成三维拓扑扩展结构.  相似文献   

15.
李秀梅 《化学研究》2005,16(4):39-41,69
在中温水热条件下,用醋酸镉和烟酸自组装合成了二维配位聚合物[Cd(n icotinate)2(H2O)]n.对其进行了元素分析、红外光谱表征、热分析、荧光分析和X射线单晶衍射测定.该配位聚合物属正交晶系,Pbca空间群,晶胞参数为:a=1.144 6(7)nm,b=1.209 9(4)nm,c=1.742 2(4)nm,V=2.412 9(2)nm3,Z=8,Mr=374.62,Dc=2.062 g/cm3,F(000)=1 472,μ=1.832 mm-1,R1=0.023 4,wR2=0.061 0.  相似文献   

16.
A novel Mn(Ⅱ)complex Mn2(phen)2(p-MBA)4(H2O)has been hydrothermally synthesized by the reaction of P-methyl benzoic acid(p-MBA)with 1,10-phenanthroline(phen).Crystal data for this complex:monoclinic,space group C2/c,a=2.3328(3),b=1.5549(2),c=1.5557(2)nm,β=121.726(2)°,V=4.7997(11)nm3,Mr=1028.85,Dc=1.424 g/cm3,Z=4,F(000)=2128,μ(MoKa)=0.590mm-1,GOOF=1.060,R=0.0333 and wR=0.0767.In the crystal,each Mn(Ⅱ)ion is coordinated by two nitrogen atoms from one o-phenanthroline molecule.three oxygen atoms from three P-methyl benzoic acids and one oxygen atom from one water molecule,giving a six-coordinate distorted octahedral coordination geometry.Two neighboring Mn(Ⅱ)ions are bridged by two P-methyl benzoic acid groups and one water molecule,and their end positions are respectively coordinated by one 1,10-phenanthroline and one p-methyl benzoic acid molecule,giving a binuclear cage structure,of which the Mn(Ⅱ)…Mn(Ⅱ)distance is 0.3502 nm.  相似文献   

17.
1 INTRODUCTION A new class of materials of metal oxide clusters based on anionic molybdenum phosphate frameworks has received much attention as a consequence of their potential applications in catalysis and materials science [1]. As a result, some molybdenum phosphates have been studied [2,3]. Recently we have studied the structure of NaPMO material[4] and the spectrum of multicomponent compound with Keggin struc- ture [5]. Here we report the synthesis and crystal structure of a new…  相似文献   

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