共查询到20条相似文献,搜索用时 31 毫秒
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金属磷酸盐材料在吸附、离子交换、离子传导和催化剂方面有潜在的应用前景[1~5]. 近年来, 通过水热反应合成了一些A-V-P-O化合物. 在这些化合物中, A一般为碱金属或有机阳离子, 如层状结构的[H2N(C4H8)2NH2][(VO)4(OH)4(PO4)2][6] 和[H2N(C2H4)3NH2][(VO)8(HPO4)3(PO4)4*(OH)2]*2H2O[6], 一维链状结构的 [H2NCH2CH2NH3(VO)(PO4)][7], 手性双螺旋结构的 [(CH3)2NH2]K4[(VO)10(H2O)2(OH)4(PO4)7]*H2O[8]以及具有三维骨架结构的化合物 [H3N(CH2)3NH3K(VO)3(PO4)3][9], [H3N(CH2)3NH3]2[V(H2O)2(VO)6(OH)2(HPO4)3(PO4)5]*3H2O[10]和[H3N(CH2)2NH3][(VO)3(H2O)2(PO4)2(HPO4)4][11]. 相似文献
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Hiroyuki Nakano Tomoji Ozeki Atsushi Yagasaki 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(9):m464-m465
The title compound, tetrakis(tetraethylammonium) cyclo‐tetra‐μ‐oxo‐tetrakis[dioxovanadium(V)] dihydrate, (C8H20N)4[V4O12]·2H2O, was obtained by reacting V2O5 with (C2H5)4NOH. It consists of a discrete centrosymmetric molecular anion, [V4O12]4?, where four tetrahedral VO4 units share two vertices with each other to form a ring. A water molecule is attached on each side of the ring through hydrogen bonds. 相似文献
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Hengbin Zhang Shuyun Niu Guangdi Yang Fu Nie Shujia Li 《Transition Metal Chemistry》1994,19(5):498-502
Summary [Et2N] [Co(NH2CSNHNH2)3] [Mo8O26] ·4Me2NCHO, obtained by reacting MoCl5, CoCl2, thiosemicarbazide and DMF in nonaqueous solvents under i.r. radiation, was characterized by spectroscopy and X-ray crystallography. It contains an octanuclear molydenum anion with two pentabridging oxygen atoms and a cobalt-centred cation bonded to nitrogen and sulphur ligands. 相似文献
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Malinovskii S. T. Coropchanu E. B. Bologa A. O. Bel'skii V. K. 《Russian Journal of Coordination Chemistry》2002,28(5):346-351
The complex compounds [Co(DH)2(Anil)2][BF4] and [Co(DH)2(Py)2][BF4] were synthesized from Co(BF4)2 · 6H2O–DH2–A–alcohol–water systems (DH2 is dimethylglyoxim and A is pyridine (Py) or aniline (Anil)), and their crystal structures were determined using X-ray diffraction analysis. In octahedral Co(III) complexes, two dimethylglyoxime radicals lie in the equatorial plane and are joined via the intramolecular hydrogen bond O–H···O. The complexes with pyridine and aniline have similar configurations but different crystal structures. 相似文献
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Honghui Zhuang Dingming Wu Shuiquan Deng Xumu Zhang Jianquan Huang Jinling Huang 《中国科学B辑(英文版)》1998,41(5):510-519
The synthesis method and crystal structure of a novel Mo3 cluster wmpound are reported. The results of structural analysis and the quantum calculation for the entire cluster molecule
reveal that though two Mo3 cluster units, which belong to two different kinds of structural type respectively, show an apparent ionic characteristic,
the interaction between them via the bridging S atoms is still quite certain. The relationship between cluster electron counting
and stability of the Mo3 clusters are also primarily discussed.
Project supported by the National Natural Science Foundation of China (Grant No. 29333031) 相似文献
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H. Follner 《Monatshefte für Chemie / Chemical Monthly》1972,103(5):1438-1443
Zusammenfassung Sn[OC2H4)2NC2H4OH]2 kristallisiert in P na21 mit den Gitterkonstantena=18,14,b=10,92,c=7,87 Å (Z=4). Die Struktur konnte mit der Schweratommethode aufgeklärt werden [R=5,2%, 1912 F(hkl)]. Zinn wird von vier Sauerstoffen und den Stickstoffatomen der beiden Triäthanolaminmoleküle oktaedrisch umgeben. Die Metall-Stickstoff-Abstände sind beträchtlich größer als in den bisher bekannten Triäthanolaminkomplexen (2,33, 2,38 Å).
Mit 3 Abbildungen 相似文献
The crystal structure of Sn[(OC2H4)2NC2H4OH]2 (Triethanolamine complexes, III)
Sn[(OC2H4)2NC2H4OH]2 crystallizes with space group P na21 and the lattice parametersa=18.14,b=10.92,c=7.87 Å (Z=4). The structure was solved by the heavy-atom method [R=5.2%, 1912 F(hkl)]. Tin is octahedrally coordinated by four oxygen and two nitrogen atoms of the triethanolamine molecules. The metal-nitrogen distances are remarkably longer than in hitherto known triethanolamine complexes (2.33, 2.38 Å).
Mit 3 Abbildungen 相似文献
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A cobalt paradodecatungstate [Co(H2O)5]2[Co(H2O)4]3[H2W12O42]·11H2O has been successfully synthesized and structurally characterized by X-ray crystallography. Structure analysis indicates that the title compound is of monoclinic, space group P21/n, with a = 13.449(3), b =19.585(4), c = 13.990(3) (A),β = 113.79(3)°, V = 3371.8(12) (A)3, Z= 2, R= 0.0519 and wR= 0.1242.The title compound exhibits a novel 3D extended network structure constructed by interconnecting the paradodecatungstate polyanion [H2W12O42]10- clusters and cobalt11 coordination ions. 相似文献
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《无机化学学报》2001,17(4)
Treatment of iodide-bridged dimer [NEt4] 4[Mo2O2S6Cu6I4Br2] 1 with 3, 5-bimethylpyridine or with K[(Ph2PS) 2N] in CH3CN afforded the tetranuclear cluster [MoOS3Cu3I(3,5-diMePy)4]·CH3CN 2 and dodecanuclear cluster (Et4N)4[Mo4Cu8O4S12{(Ph2PS)2N}4] 3. Monomeric 2 possess a nest-shaped skeleton.The structure of oligomeric 3 can be regarded as a tetramer of nest-shaped MoCu3OS3[(Ph2PS)aN]groups co-polymerized by sharing the limbic Cu atoms. 相似文献
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Syntheses and Structures of (Et4N)2[Re(CO)3(NCS)3] and (Et4N)[Re(CO)2Br4] Rhenium(I) and rhenium(III) carbonyl complexes can easily be prepared by ligand exchange reactions starting from (Et4N)2[Re(CO)3Br3]. Using nonoxidizing reagents the facial ReI(CO)3 unit remains and only the bromo ligands are exchanged. Following this procedure, (Et4N)2[Re(CO)3(NCS)3] can be obtained in high yield and purity using trimethylsilylisothiocyanate. The compound crystallizes in the monoclinic space group P21/n, a = 18.442(5), b = 17.724(3), c = 18.668(5) Å, β = 92.54(1)°, Z = 8. The NCS? ligands are coordinated via nitrogen. The reaction of [Re(CO)3Br3]2? with Br2 yields the rhenium(III) anion [Re(CO)2Br4]?. The tetraethylammonium salt of this complex crystallizes in the noncentrosymmetric, orthorhombic space group Cmc21, a = 8.311(1), b = 25.480(6), c = 8.624(1) Å, Z = 4. The carbonyl ligands are positioned in a cis arrangement. Their strong trans influence causes a lengthening of the Re? Br bond distances by at least 0.05 Å. 相似文献
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硫氰酸根的结构为N三C-S-,其两端的N原子和S原子分别有一对和三对孤对电子,因此,硫氰酸根可采用多种不同的配位模式与金属离子发生配位.硫氰酸根可作为单齿配体与一个金属离子配位,形成M-SCN或M-NCS的单核配合物,也可以作为桥联配体同时与两个、三个甚至四个金属离子配位形成多核配合物[1-3];另一方面,硫氰酸根是一个具有一定共轭性的偶极子,可传递磁相作用.因此,选择硫氰酸根作为桥联配体,将多个顺磁金属离子桥联形成一维、二维或三维结构的多核金属配合物分子,并研究它们的磁性已成为分子磁学的一个研究领域[4-6].本文仅报道标题配合物的合成与晶体结构. 相似文献