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1.
Reaction of Hg(S7N)2 with cis- PtCl2(PR3)2 (PR3 = PPh3, PPh2Me, PPHMe2, PEt3) in the presence of Na[PF6] gives [Pt(S3N)(PR3)2][PF6] in 32–46% yield. The complexes have been characterized by IR, NMR and microanalyses. The X-ray crystal structures of two examples (PR3 = PPh2Me and PEt3) show that the S3N− ligand coordinates in a bidentate fashion via two sulphur atoms. 相似文献
2.
采用溶剂热法, 以2, 5-二溴对苯二甲酸(H2L)为配体, 分别与六水合硝酸钕、六水合硝酸钆反应合成了 2种镧系金属有机骨架(MOFs):{[Nd2(L)3(DMF)2(H2O)2]·2DMF}n (1)和{[Gd2(L)3(DMF)2(H2O)2]·2DMF}n (2)。通过单晶X射线衍射、粉末X射线衍射、红外光谱、元素分析、荧光光谱、热重分析等测试方法对其进行了结构表征与性质研究。结果表明, 2个配合物均是以稀土离子为金属节点, 与配体相互连接, 形成无限延伸的三维网状结构。 相似文献
3.
Mengtao Ma Xiaoping Xu Yingming Yao Yong Zhang Qi Shen 《Journal of Molecular Structure》2005,740(1-3):69-74
Three lanthanide “ate” complexes L2YbM(THF)n supported by amine bis(phenolate) ligand [L=Me2NCH2CH2N{CH2-(2-O-C6H2-But2-2,4)}2; M=Li, n=2 (1); M=Na, n=2 (2); M=K, n=3 (3)] were synthesized by the metathesis reactions of LM2 with anhydrous YbCl3 in 2:1 molar ratio in high yield. All the complexes were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The influence of the alkali metal ions on the molecular structure of these lanthanide complexes has been elucidated. 相似文献
4.
Shi-Yu Wang Wen-Min Wang Ying-Ping Quan Hong-Ling Gao 《Journal of Coordination Chemistry》2016,69(4):594-603
Four lanthanide-nitronyl nitroxide radical complexes, [Ln(hfac)3(NIT-3Methien)2] (Ln = Pr (1), Tb (2), Dy (3), Ho (4); hfac = hexafluoroacetylacetonate; NIT-3Methien = 2-(3-methylthiophene)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), have been synthesized, and structurally and magnetically characterized. Single-crystal X-ray diffraction shows that 1–4 have similar mononuclear tri-spin structures in which central Ln(III) ions are eight coordinate by two NIT-3Methien radicals and three hfac coligands. The magnetic studies indicate that there are antiferromagnetic interactions between Ln(III) ions and radicals in 1, 2, and 4, while ferromagnetic interactions are present in 3. The luminescence properties of 2 and 3 were studied. 相似文献
5.
采用溶剂热法,以2,5-二溴对苯二甲酸(H2L)为配体,分别与六水合硝酸钕、六水合硝酸钆反应合成了2种镧系金属有机骨架(MOFs):{[Nd2(L)3(DMF)2(H2O)2]·2DMF}n (1)和{[Gd2(L)3(DMF)2(H2O)2]·2DMF}n (2)。通过单晶X射线衍射、粉末X射线衍射、红外光谱、元素分析、荧光光谱、热重分析等测试方法对其进行了结构表征与性质研究。结果表明,2个配合物均是以稀土离子为金属节点,与配体相互连接,形成无限延伸的三维网状结构。 相似文献
6.
Zhang AJ Wang YW Dou W Dong M Zhang YL Tang Y Liu WS Peng Y 《Dalton transactions (Cambridge, England : 2003)》2011,40(12):2844-2851
Six new homodinuclear lanthanide(III) complexes with a flexible tripodal carboxylate ligand (H(3)L), of formulae [Ln(2)L(2)(DMF)(4)]·4DMF (Ln = La (1), Nd (2), Eu (3), Gd (4), Tb (5), Dy (6), DMF = N, N-Dimethylformamide) have been synthesized. Among them, 1, 2, 3, 4, 6 were characterized by single-crystal X-ray diffraction, which crystallized in the monoclinic space group P2(1)/n with a = 13.309(2) ?, b = 27.404(4) ?, c = 16.686(3) ?, β = 105.115(2) and V = 5875.2(17) ?(3) for 1, a = 13.3016(5) ?, b = 27.1952(12) ?, c = 16.6339(7) ?, β = 105.030(2) and V = 5811.3(4) ?(3) for 2, a = 13.2797(10) ?, b = 27.072(2) ?, c = 16.6564(13) ?, β = 104.9390(10) and V = 5785.7(8) ?(3) for 3, a = 13.2855(3) ?, b = 27.0074(6) ?, c = 16.6357(3) ?, β = 104.9790(10) and V = 5766.2(2) ?(3) for 4, a = 13.2837(5) ?, b = 26.9105(10) ?, c = 16.6066(6) ?, β = 104.917(2) and V = 5736.3(4) ?(3) for 6. The crystal structures reveal that these complexes are isostructural, and molecules are connected from 0D to 3D supramolecular structures by hydrogen bonds. All of them were characterized by elemental analysis, IR spectroscopy, XRD and TGA. Unusually, non-luminescent Tb(III) complex was obtained. The photophysical property of the Eu(III) complex and the magnetic property of Gd(III) complex are investigated and discussed in detail. 相似文献
7.
Bonnet F Visseaux M Barbier-Baudry D Hafid A Vigier E Kubicki MM 《Inorganic chemistry》2004,43(12):3682-3690
The reaction of Ln(BH(4))(3)(THF)(3) or LnCl(3)(THF)(3) with 1 equiv of KCp*' ligand (Cp' = C(5)Me(4)n-Pr) afforded the new monocyclopentadienyl complexes Cp*'LnX(2)(THF)(n) (X = BH(4), Ln = Sm, n = 1, 1a, Ln = Nd, n = 2, 1b; X = Cl, Ln = Sm, n = 1, 3a) and [Cp*'LnX(2)](n') (X = BH(4), n' = 6, Ln = Sm, 2a, Ln = Nd, 2b; X = Cl, Ln = Nd, 4b). All these compounds were characterized by elemental analysis and (1)H NMR. Crystals of mixed borohydrido/chloro-bridged [Cp*'(6)Ln(6)(BH(4))(12-x))Cl(x)(THF)(n')] (x = 10, n' = 4, Ln = Sm, 2a', Ln = Nd, 2b'; x = 5, n = 2, Ln = Sm, 2a' ') were also isolated. Compounds 2a, 2b, 2a', 2b', and 2a' were structurally characterized; they all exhibit a hexameric structure in the solid state containing the [Cp*(3)Ln(3)X(5)(THF)] building block. The easy clustering of THF adducts first isolated is illustrative of the well-known bridging ability of the BH(4) group. Hexameric 2a was found to be unstable in the presence of THF vapors; this may be correlated to the opening of unsymmetrical borohydride bridges observed in the molecular structure. 相似文献
8.
《Journal of Coordination Chemistry》2012,65(9):1573-1583
Three polynuclear clusters, [Cu4L8](ClO4)4·4H2O (1), [Zn3L6(H2O)6](ClO4)6·6H2O (2), and [Mn3L6(CH3OH)6](ClO4)6·4.5H2O (3) (L?=?4-(4-hydroxyphenyl)-1,2,4-triazole), obtained by the reactions of M(ClO4)2·6H2O with L have been isolated and structurally characterized. Complex 1 featured a tetranuclear Cu(I) structure. Both 2 and 3 are linear hexapositive trimers linked by three N1,N2–1,2,4-triazole ligands to the divalent central and terminal metal ions. Furthermore, the luminescence properties of 2 were investigated at room temperature in the solid state. 相似文献
9.
A.K. Ganguly Y-T. Liu O. Sarre R.S. Jaret A.T. McPhail K.K. Onan 《Tetrahedron letters》1980,21(49):4699-4702
The X-ray crystal structure of rosaramicin is reported. 相似文献
10.
Two- and three-dimensional lanthanide complexes: synthesis, crystal structures, and properties 总被引:1,自引:0,他引:1
Xia J Zhao B Wang HS Shi W Ma Y Song HB Cheng P Liao DZ Yan SP 《Inorganic chemistry》2007,46(9):3450-3458
3,5-pyrazoledicarboxylic acid (H3L) reacts with nitrate salts of lanthanide(III) (Ln=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, and Er) under hydrothermal conditions to form a series of lanthanide polymers 1-9. These nine polymers have the same crystal system of monoclinic, but they exhibit three different kinds of metal-organic framework structures. The complexes {[Ln2(HL)3(H2O)4].2H2O}n (Ln=Pr (1), Nd (2), and Sm (3)) were isostructural and exhibited porous 3D frameworks with a Cc space group. The complexes {[Ln2(HL)3(H2O)3].3H2O}n (Ln=Eu (4), Gd (5), and Tb (6)) were isostructural and built 2D double-decker (2DD) frameworks with a P21/c space group. The complexes {[Ln(HL)(H2L)(H2O)2]}n ((Ln=Dy (7), Ho (8), and Er (9)) were also isostructural and formed 2D monolayer (2DM) frameworks with a P21/n space group. The structure variation from the 3D porous framework to the 2D double-decker to the 2D monolayer is attributed to the lanthanide contraction effect. Notably, six new coordination modes of 3,5-pyrazoledicarboxylic acid were observed, which proved that 3,5-pyrazoledicarboxylic acid may be used as an effective bridging ligand to assemble lanthanide-based coordination polymers. The photophysical and magnetic properties have also been investigated. 相似文献
11.
V. N. Serezhkin A. V. Vologzhanina D. V. Pushkin L. B. Serezhkina 《Russian Journal of Coordination Chemistry》2007,33(10):741-748
The most important characteristics of the Voronoi-Dirichlet polyhedra (VDP) were determined for 20526 Ln atoms (Ln = La?Lu) in sublattices containing chemically identical lanthanide atoms in the crystal structures of 14659 inorganic, coordination, and organoelement compounds. The number of lanthanide VDP faces in the sublattice can vary from 4 to 36 and, irrespective of the lanthanide nature, the VDP have most often 14 faces. The Fedorov cuboctahedron is the most abundant type of VDP. In the crystal structures, Ln atoms were found to have, most often, C 1 site symmetry (~49% of cases) and also C s (16), C 2v (7%), or C 2 (6%) site symmetries. 相似文献
12.
Jian-Ping Zou Sheng-Lian Luo Ming-Jun Li Xin-Hua Tang Qiu-Ju Xing Qiang Peng Guo-Cong Guo 《Polyhedron》2010
A series of lanthanide(III) complexes with chelidamic acid ligand, [Ln(C7H2NO5)·3H2O]n·nH2O (Ln = La (1), Y (2), Sm (3), and Nd (4)), [Gd2(C7H2NO5)3·4H2O]n·2nH2O (5) and [Ce(C7H2NO5)·1.5H2O]n (6), have been synthesized by hydrothermal method and structurally characterized by single-crystal X-ray diffraction. Complexes 1–4 are isostructural and possess 2D framework. Complex 5 contains two different Gd(III) ions linked through carboxylate group to form a 2D framework. Complex 6 exhibits a (44) topology 2D network. The variable-temperature magnetic properties of 3 and 5 have been investigated. Furthermore, the photoluminescent properties of 1, 2, 3, and 5 at room temperature were also studied. 相似文献
13.
[reaction: see text] Receptor-mediated imaging and therapy of diseased tissue is rapidly gaining favor in the medical community. The synthesis and facile aqueous/organic coupling of a peripheral-type benzodiazepine receptor ligand to a cyclen-based fluorophore is described herein. The contrast agent QM-CTMC-PK11195, when chelated with lanthanides, produces bright luminescence and good MRI contrast and can potentially serve as an imaging and demarcation agent for certain types of cancers. 相似文献
14.
Guo XF Feng ML Xie ZL Li JR Huang XY 《Dalton transactions (Cambridge, England : 2003)》2008,(23):3101-3106
[Ln(8)(SeO(3))(4)(2,6-pdc)(8)(H(2)O)(10)].2H(2)O (Ln = La (1), Nd (2), Eu (3); 2,6-pdcH(2) = pyridine-2,6-dicarboxylic acid) represent the first examples of luminescent lanthanide selenite-carboxylate compounds. The compounds have been hydrothermally synthesized and structurally characterized. The structures feature two-dimensional (2D) host frameworks composed of Ln(8)(SeO(3))(4)(2,6-pdc)(8)(H(2)O)(10) clusters connected to each other via inter-cluster Ln(2)O(2) rhombic units along the b-axis and 12-membered Ln(4)O(2)(COO)(2) rings along the c-axis. Inter-layer H-bonding interactions between coordinated water molecules and carboxylate groups lead to three-dimensional architectures. Thermogravimetric analysis (TGA) indicated that the 2D networks were thermostable up to approximately 450 degrees C after losing both coordinated and lattice water molecules and underwent reversible process of dehydration and rehydration. Study on photoluminescent properties revealed that compounds 1, 2 and 3 were new rare-earth materials with violet, near-infrared, and red luminescence, respectively. 相似文献
15.
M. I. Naumova E. A. Mainicheva O. A. Gerasko V. P. Fedin 《Russian Chemical Bulletin》2009,58(9):1858-1865
New coordination polymers [Ce(C5H4NCOO)3(H2O)2] · 0.5C6H4N2 · 1.5H2O, [Ln(C5H4N-COO)3(H2O)2] (Ln = Ce, Pr) and [Ho(C5H4NCOO)2(H2O)4]NO3,
and the tetranuclear complex [Ho4(OH)4(C5H4NCOO)6(H2O)8](NO3)2 · 3.5C6H4N2 · 5H2O were prepared by heating aqueous solutions
of lanthanide(III) nitrates with 4-cyanopyridine under conditions of hydro-thermal synthesis. X-ray diffraction study demonstrated
that the lanthanide atoms in the coordination polymers are bridged in chains through coordination to the carboxyl group of
isonicotinic acid. The metal atoms in the tetranuclear complex are bound in pairs by six bidentate isonicotinate ligands. 相似文献
16.
《Journal of Coordination Chemistry》2012,65(17):2725-2734
Reactions of Ln(ClO4)3?·?6H2O (Ln=La(III), Eu(III), Nd(III)), 1,10-phenanthroline (phen) and phenoxyacetic acid (PA) or 2,4-dichlorophenoxyacetic acid (2,4-D) yield [La(PA)2 (phen)2]2(ClO4)2 (1), [Eu(2,4-D)2(phen)2]2(ClO4)2 (2) and [Nd(2,4-D)3(C2H5OH)] n (3). Compounds 1–3 are characterized by elemental analyses, IR, UV–Vis, ESI-MS spectra and TGA. 1 is also characterized by 1H and 13C NMR. Single crystal X-ray diffraction analyses reveal that 1 and 2 are binuclear, and 3 has a one-dimensional polymeric structure. The La(III), Eu(III) and Nd(III) are nine-coordinate with a distorted tricapped trigonal-prism geometry. 相似文献
17.
Lyhs B Bläser D Wölper C Schulz S 《Chemistry (Weinheim an der Bergstrasse, Germany)》2011,17(17):4914-4920
Antimony(III) complexes of the general type LSbF(2) (3: L(1) =[tBuC(NiPr)(2)]; 4: L(2) =[tBuC(NDipp)(2) , Dipp=2,6-iPr(2)C(6)H(3)) and LSb(N(3))(2) (6: L(1); 7: L(2)) were prepared in high yields and characterized by elemental analyses, NMR and IR spectroscopy and single-crystal X-ray diffraction. Moreover, the solid-state structures of [L(2)SbF(2)][L(2)Li] (5), [L(2) AlH(2)] (1), and [L'H][L'K(thf)(3)] (2; L'=HC(NDipp)(2)) are described, in which the Li (5) and K atoms (2) adopt rather unusual coordination modes. 相似文献
18.
X-ray crystal structures of the oxidized form of three conformationally biased flavin models are reported. Models 4 and 5 show significant distortion, which contributes to their bias for the fully reduced form. 相似文献
19.
20.
《Journal of Coordination Chemistry》2012,65(13):2095-2107
Several new coordination polymers of lanthanide tartrate with three types of topological structures, namely [Ln2(DL-tart)3(H2O)3] · 1.5H2O [Ln = La (1), Nd (2), and Sm (3)], [Ln2(D-tart)3(H2O)2] · 3H2O [Ln = Eu (4), Tb (5), and Dy (6)], and [Lu(C4H4O6)(C4H5O6)] · 2.5H2O (7), have been synthesized by hydrothermal synthesis. X-ray crystallographic analysis reveals that 1 is a unique 3-D network, whereas 5 with a 3-D network and 7 with a 2-D network are isomorphous with their analogs. All lanthanide ions are nine-coordinate through oxygen donors. Four different coordination modes of tartrate occur in these complexes. Luminescence spectra reveal that 4, 5, and 6 emit characteristic luminescence of corresponding lanthanide ions. 相似文献