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1.
SynthesisandCrystalStructureofTrigadoliniumBromoorthosilicate,Gd_3Br(SiO_4)_2MaoJiang-Gao;ZhuangHong-Hui;HuangJin-Shun(StateKe?..  相似文献   

2.
Preparation and Crystal Structures of LaCl_3(12-crown-4)(MeOH)and[LaCl_3(phen)_2(H_2O)]·MeOHMaoJiang-Gao(FujianInstituteofResea...  相似文献   

3.
CrystalStructureof[La(NO_3)_3(12-crown-4)-(H_2O)](12-crown-4)MaoJiang-Gao;JinZhong-Sheng;YuFeng-Lan(LaboratoryofRareEarthChemi?..  相似文献   

4.
Synthesis and Crystal Structure of (Et4N)3[{V(o—C6H4OS)3}2Na]   总被引:1,自引:0,他引:1  
温庭斌  徐勇进 《结构化学》1995,14(2):151-156
SynthesisandCrystalStructureof(Et_4N)_3[{V(o-C_6H_4OS)_3}_2Na]¥WenTing-Bin;XuYong-Jin;ShiJi-Cheng;DengYu-Heng;ChenChang-Neng;Liu...  相似文献   

5.
SynthesisandCrystalStructureof[Lu(NO_3)_3(H_2O)_2(CH_3CN)](Benzo-15-C-5)·CH_3CNWangRui-Yao;JinZhong-Sheng;NiJia-Zuan(Laboratoryo...  相似文献   

6.
SynthesisandStructureof[(C_2H_5)_4N][Mo_3(μ_3-O)(μ-Cl)_3(μ-CH_3CH_2COO)_3Cl_3]ZhuangHong-Hui;WuDing-Ming;HuangJian-Quan;HuangJin-L...  相似文献   

7.
SynthesisandCrystalStructureof[Na(DB18C6)(CH_3OH)]_2Mo_6O_(19)·(DB18C6)·(CH_3OH)¥ZhouYin-Zhuang;TuShu-Jie;JinXiang-Lin;LiuShun-...  相似文献   

8.
CrystalStructureandMolecularStructureofBinuclearCopper(Ⅱ)Complex,[Cu(C_5H_5NO)(C_6H_5COO)_2]_2¥YangRui-Na;HouYi-Min;XueBao-Yu;Ji...  相似文献   

9.
SynthesisandCrystalStructureofaMixed-ValenceTrinuclearManganeseComplex:Mn_3O(O_2CPh)_6(Py)_3XuHao;LiJin-Yu;LiuQi;XuZheng;YouXia...  相似文献   

10.
SynthesisandCrystalStructureof[C_6H_5CH_2C_5H_4ErCl_2(THF)_3]·THFGaoFu-Xing;WeiGe-Cheng;JinZhong-Sheng;ChenWen-Qi(ChangchunInsti?..  相似文献   

11.
Reaction of N,N'-bis(phosphonomethyl)-1,10-diaza-18-crown-6 (H(4)L) with copper(II) acetate in 1:1 ethanol/water mixed solvents afforded a new crystal-engineered supramolecular metal phosphonate, Cu(H(2)L) (complex 1). By reaction of the same ligand with cadmium(II) nitrate in a 2:1 (M/L) ratio in methanol, a cadmium(II) complex with a 3D network structure was isolated, Cd(2.75)(L)(H(2)O)(7) x 1.5NO(3) x 7H(2)O x MeOH (complex 2). The copper(II) complex crystallized in the monoclinic space group P2(1)/c, with a =10.125(4), b = 14.103(6), and c = 14.537(6) A, beta = 91.049(8) degrees, V = 2075.4(16) A(3), and Z = 2. The Cu(II) ions in complex 1 are 6-coordinated by two phosphonate oxygen atoms, two nitrogen, and two oxygen atoms from the crown ether ring. Their coordination geometry can be described as Jahn-Teller-distorted octahedral, with elongated Cu-O(crown) distances (2.634(4) and 2.671(4) A for Cu(1) and Cu(2), respectively). The other two crown oxygen atoms remain uncoordinated. Neighboring two Cu(H(2)L) units are further interlinked via a pair of strong hydrogen bonds between uncoordinated phosphonate oxygen atoms, resulting in a one-dimensional supramolecular array along the a axis. The cadmium(II) complex is tetragonal, P4(2)/n (No. 86) with a = 20.8150(9) and c = 18.5846(12) A, V = 8052.0(7) A(3), and Z = 8. Among four cadmium(II) atoms in an asymmetric unit, one is 8-coordinated by four chelating phosphonate groups, the second one is 8-coordinated by 6 coordination atoms from a crown ring and two oxygen atoms from two phosphonate groups, the third Cd(II) atom is octahedrally coordinated by three aqua ligands and three phosphonate oxygen atoms from three phosphonate groups, and the fourth one is 6-coordinated by four aqua ligands and two oxygen atoms from two phosphonate groups in a distorted octahedral geometry. These cadmium atoms are interconnected by bridging phosphonate tetrahedra in such a way as to form large channels along the c direction, in which the lattice water molecules, methanol solvent, and nitrate anions reside. The effect of extent of deprotonation of phosphonic acids on the type of complex formed is also discussed.  相似文献   

12.
The compounds (NC(12)H(8)(NH)(2))[Ln(N(3)C(12)H(8))(4)], Ln = Y, Tb, Yb, and [Ln(N(3)C(12)H(8))(2)(N(3)C(12)H(9))(2)][Ln(N(3)C(12)H(8))(4)](N(3)C(12)H(9))(2), with Ln = La, Sm, Eu, were obtained by reactions of the group 3 metals yttrium and lanthanum as well as the lanthanides europium, samarium, terbium, and ytterbium with 2-(2-pyridyl)-benzimidazole. The reactions were carried out in melts of the amine without any solvent and led to two new groups of homoleptic rare earth pyridylbenzimidazolates. The trivalent rare earth atoms have an eightfold nitrogen coordination of four chelating pyridylbenzimidazolates giving an ionic structure with either pyridylbenzimidazolium or [Ln(N(3)C(12)H(8))(2)(N(3)C(12)H(9))(2)](+) counterions. With Y, Eu, Sm, and Yb, single crystals were obtained whereas the La- and Tb-containing compounds were identified by powder methods. The products were investigated by X-ray single crystal or powder diffraction and MIR and far-IR spectroscopy, and with DTA/TG regarding their thermal behavior. They are another good proof of the value of solid-state reaction methods for the formation of homoleptic pnicogenides of the lanthanides. Despite their difference in the chemical formula, both types (NC(12)H(8)(NH)(2))[Ln(N(3)C(12)H(8))(4)], Ln = Y (1), Tb (2), Yb (3), and [Ln(N(3)C(12)H(8))(2)(N(3)C(12)H(9))(2)][Ln(N(3)C(12)H(8))(4)](N(3)C(12)H(9))(2), Ln = La (4), Sm (5), Eu (6), crystallize isotypic in the tetragonal space group I4(1). Crystal data for (1): T = 170(2) K, a = 1684.9(1) pm, c = 3735.0(3) pm, V = 10603.5(14) x 10(6) pm(3), R1 for F(o) > 4sigma(F(o)) = 0.053, wR2 = 0.113. Crystal data for (3): T = 170(2) K, a = 1683.03(7) pm, c = 3724.3(2) pm, V = 10549.4(14) x 10(6) pm(3), R1 for F(o) > 4sigma(F(o)) = 0.047, wR2 = 0.129. Crystal data for (5): T = 103(2) K, a = 1690.1(2) pm, c = 3759.5(4) pm, V = 10739(2) x 10(6) pm(3), R1 for F(o) > 4sigma(F(o)) = 0.050, wR2 = 0.117. Crystal data for (6): T = 170(2) K, a = 1685.89(9) pm, c = 3760.0(3) pm, V = 10686.9(11) x 10(6) pm(3), R1 for F(o) > 4sigma(F(o)) = 0.060, wR2 = 0.144.  相似文献   

13.
CrystalStructureofLanthanum(Ⅲ)NitrateComplexwith4-Tert-butyl-benzo-15-crown-5(L)¥MaoJiang-Gao;WangRui-Yao;JinZhong-Sheng(Labo...  相似文献   

14.
Jia D  Zhao Q  Zhang Y  Dai J  Zuo J 《Inorganic chemistry》2005,44(24):8861-8867
New lanthanide thioantimonate(V) compounds, [Ln(en)3(H2O)x(mu(3-x)-SbS4)] (en = ethylenediamine, Ln = La, x = 0, Ia; Ln = Nd, x = 1, Ib) and [Ln(en)4]SbS4.0.5en (Ln = Eu, IIa; Dy, IIb; Yb, IIc), were synthesized under mild solvothermal conditions by reacting Ln2O3, Sb, and S in en at 140 degrees C. These compounds were classified as two types according to the molecular structures. The crystal structure of type I (Ia and Ib) consists of one-dimensional neutral [Ln(en)3(H2O)x(mu(3-x)-SbS(4))]infinity (x = 0 or 1) chains, in which SbS4(3-) anions act as tridentate or bidentate bridging ligands to interlink [Ln(en)3]3+ ions, while the crystal structure of type II (IIa, IIb, and IIc) contains isolated [Ln(en)4]3+ cations, tetrahedral SbS4(3-) anions, and free en molecules. A systematic investigation of the crystal structures of the five lanthanide compounds, as well as two reported compounds, clarifies the relationship between the molecular structure and the entity of the lanthanide(III) series, such as the stability of the lanthanide(III)-en complexes, the coordination number, and the ionic radii of the metals.  相似文献   

15.
Herein, we report the synthesis, structural investigation, and magnetic and photophysical properties of a series of 13 [Zn(II)Ln(III)] heterodinuclear complexes, which have been obtained employing a Schiff-base compartmental ligand derived from o-vanillin [H(2)valpn = 1,3-propanediylbis(2-iminomethylene-6-methoxy-phenol)]. The complexes have been synthesized starting from the [Zn(valpn)(H(2)O)] mononuclear compound and the corresponding lanthanide nitrates. The crystallographic investigation indicated two structural types: the first one, [Zn(H(2)O)(valpn)Ln(III)(O(2)NO)(3)], contains 10-coordinated Ln(III) ions, while in the second one, [Zn(ONO(2))(valpn)Ln(III)(H(2)O)(O(2)NO)(2)]·2H(2)O, the rare earth ions are nine-coordinated. The Zn(II) ions always display a square-pyramidal geometry. The first structural type encompasses the larger Ln ions (4f(0)-4f(9)), while the second is found for the smaller ions (4f(8)-4f(11)). The dysprosium derivative crystallizes in both forms. Luminescence studies for the heterodinuclear compounds containing Nd(III), Sm(III), Tb(III), Dy(III), and Yb(III) revealed that the [Zn(valpn)(H(2)O)] moiety acts as an antenna. The magnetic properties for the paramagnetic [Zn(II)Ln(III)] complexes have been investigated.  相似文献   

16.
<正> The complex Pr (NO3)3 (Me2-16-C-5) (Me2-16-C-5 = 3, 3-dimethyl-1,5,8,11,14-pentaoxacyclohexadecane) crystallizes in the hexagonal space group P65with a = b = 13. 145(2), c=25. 611(5) A ; Z = 6; V = 3832(1)A3; Dc = 1. 53gcm-3; F (000) = 1776;μ= 19. 7cm-1 (MoKa). The final refinement converged with R = 0. 049 and Rw = 0. 051 for 2005 observed reflections. The Pr(Ⅲ) ion is 11-coordinated to three bidentate nitrate groups and five oxygen atoms of a crown ether. The average Pr -O(crown) and Pr -O(NO3-) bond lengths are 2. 68 and 2. 57A , respectively.  相似文献   

17.
<正> Complex La(NO3)3(Benzo-15-C-5) (C14H20LaN3O14, Mt= 593. 28) crystallizes in the orthorhombic,space group P212121 with a=8. 393(2),b= 16. 624(5), c = 17. 326(4) A ,V = 2417. 6(6) A3,Z = 4,DC= 1. 63gcm-3,F(000) = 1176, μ= 18. 7cm~1(MoKa). The final refinement converged with R = 0. 060 and Rw=0. 065 for 2223observed independent reflections. Complex La ( NO3 )3 ( Cyclohexyl- 15- C- 5 ) (C14H26LaN3O14,MT = 599. 34) is monoclinic,P21/n space group with a=9. 917(4),b= 13. 667(5),c=16. 763(5)A,β=104. 33(3),V = 2201(1)A3,Z=4,Dc=1.81gcm-3, F(000) = 1200,μ= 20. 4cm-1(MoKa).The final refinement converged with R=0. 048 and Rw=0. 036 for 1495 observed independent reflections. In the two complexes,the La (Ⅲ) ion is 11-coordinate and bonded to six oxygen atoms from three bidentate nitrate groups and five oxygen atoms from the crown ether. The average bond lengths of La -O (crown) and La -O(nitrate)are 2. 68 and 2. 61A for La(NO3)3(Benzo-15-C-5) ,re-snectively and 2. 71 and 2. 62 A for La(NO3)3(Cyclohexyl-15-C-5) re  相似文献   

18.
This report covers studies in trivalent lanthanide complexation by two simple cyclohexanetriols that are models of the two coordination sites found in sugars and derivatives. Several complexes of trivalent lanthanide ions with cis,cis-1,3,5-trihydroxycyclohexane (L(1)()) and cis,cis-1,2,3-trihydroxycyclohexane (L(2)()) have been characterized in the solid state, and some of them have been studied in organic solutions. With L(1)(), Ln(L)(2) complexes are obtained when crystallization is performed from acetonitrile solutions whatever the nature of the salt (nitrate or triflate) [Ln(L(1)())(2)(NO(3))(2)](NO(3)) (Ln = Pr, Nd); [Ln(L(1)())(2)(NO(3))H(2)O](NO(3))(2) (Ln = Eu, Ho, Yb); [Ln(L(1)())(2)(OTf)(2)(H(2)O)](OTf) (Ln = Nd, Eu). Lanthanum nitrate itself gives a mixed complex [La(L(1)())(2)(NO(3))(2)][LaL(1)()(NO(3))(4)] from acetonitrile solution while [La(L(1)())(2)(NO(3))(2)](NO(3)) is obtained using dimethoxyethane as reaction solvent and crystallization medium. With L(2)(), Ln(L)(2) complexes have also been crystallized from methanol solution [Ln(L(2)())(2)(NO(3))(2)]NO(3), (Ln = Pr, Nd, Eu). Single-crystal X-ray diffraction analyses are reported for these complexes. Complex formation in solution has been studied for several triflate salts (La, Pr, Nd, Eu, and Yb) with L(1 )()and L(2)(), respectively in acetonitrile and in methanol. In contrast to the solid state, both structures Ln(L) and Ln(L)(2) equilibrate in solution, as was demonstrated by low-temperature (1)H NMR and electrospray ionization mass spectrometry experiments. Competing experiments in complexing abilities of L(1)() and L(2)() with trivalent lanthanide cations have shown that only L(2)() exhibits a small selectivity (Nd > Pr > Yb > La > Eu) in methanol.  相似文献   

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