Ln（Ⅲ）—Co（Ⅱ）与以水杨醛缩乙二胺Schiff碱异核配合物的合成与波谱性质

合成了双水杨醛缩乙二胺Ｓｃｈｉｆｆ碱（ＳＡＬＥＮ）与钴的配合物Ｃｏ（ＳＡＬＥＮ）（ＮＯ３）２．３Ｈ２Ｏ及镧系－钴的异核配合物ＬｎＣｏ（ＳＡＬＥＮ）２（ＮＯ３）５．２Ｈ２Ｏ（Ｌｎ＝Ｌａ，Ｎｄ，Ｓｍ，Ｇｄ，Ｙｂ，Ｙ）以紫外红外光谱，特别是ＨＮＭＲ是ＥＰＲ波谱等方法研究了它们在组成、结构和配位等方面的异同，中讨论了配合物ＥＰＲ谱在不同溶剂中峰宽的相对关系，配合物在晶体场强度及Ｇｄ＾３＋周围局部对称性等     

镧系元素Dawson结构钨钒磷四元杂多配合物的合成,表征以…

合成了通式为Ｋ１５Ｈ３〔Ｃｅ（Ｐ２Ｗ１６ＶＯ６１）２〕．６１Ｈ２Ｏ、Ｋ１５Ｈ４〔Ｌｎ（Ｐ２Ｗ１６ＶＯ６１）２〕．ｘＨ２Ｏ（Ｌｎ＝Ｌａ＾３＋，Ｐｒ＾３＋，Ｎｄ＾３＋，Ｓｍ＾３＋，Ｅｕ＾３＋，Ｇｄ＾３＋，Ｄｙ＾３＋，Ｙｂ＾３＋）的９种镧系元素Ｄａｗｓｏｎ结构的钨钒磷四元杂多配合物，并用ＩＲ、ＵＶ、ＮＭＲ、ＥＳＲ、ＸＲＤ、ＴＧ－ＤＴＡ等对其结构和性质进行子研究。该类配合物具有与Ｋ１６〔Ｃｅ（Ｐ２Ｗ１７Ｏ     

Ln(Ⅲ)-Co(Ⅱ)与双水杨醛缩乙二胺Schiff碱异核配合物的合成与波谱性质

合成了双水杨醛缩乙二胺Ｓｃｈｉｆ碱（ＳＡＬＥＮ）与钴的配合物Ｃｏ（ＳＡＬＥＮ）（ＮＯ３）２·３Ｈ２Ｏ及镧系－钴的异核配合物ＬｎＣｏ（ＳＡＬＥＮ）２（ＮＯ３）５·２Ｈ２Ｏ（Ｌｎ＝Ｌａ，Ｎｄ，Ｓｍ，Ｇｄ，Ｙｂ，Ｙ）．以紫外、红外光谱，特别是１ＨＮＭＲ及ＥＰＲ波谱等方法研究了它们在组成、结构和配位等方面的异同．文中讨论了配合物ＥＰＲ谱在不同溶剂中峰宽的相对关系、配合物晶体场强度及Ｇｄ３＋周围局部对称性等问题．     

几种稀土卟啉配合物的固相合成及电化学性质研究

在固相条件下合成了４种四（对甲氧基苯基）卟啉稀土（Ｌｎ＝Ｌａ＾３＋,Ｐｒ＾３＋,Ｎｄ＾３＋,Ｄｙ＾３＋）配合物。用元素分析、ＩＣＰ、ＵＶ及ＩＲ光谱进行表征,用循环伏安法研究了它们的电化学性能,实验结果表明,它们的电化学性质相似。在循环伏安图中出现了三对氧化还原峰。第一对为「Ｃ４８Ｈ３６Ｎ４Ｏ４Ｌｎ（Ⅲ）」＾＋／「Ｃ４８Ｈ３６Ｎ４ＯＬｎ（Ⅱ）」,第二为「Ｃ４８Ｈ３６Ｎ４Ｏ４Ｌｎ（Ⅱ）」／「Ｃ４８Ｈ３６Ｎ４Ｏ４Ｌｎ（Ⅰ）」＾－１,第三对为「Ｃ４８Ｈ３６Ｎ４ＯＬｎ（Ⅰ）」＾－／「Ｃ４８Ｈ３６Ｎ４ＯＬｎ」＾２－。     

镧系元素钨钒杂多配合物的合成与表征

报道了镧系元素钨钒杂多配合物的合成方法。元素分析和热重分析确定其通式为：Ｋ７Ｈ６「Ｌｎ（ＶＷ１０ＶＯ３９）２」．ｘＨ２Ｏ（Ｌｎ＝Ｌａ＾３＋、Ｃｅ＾３＋、Ｐｒ＾３＋、Ｎｄ＾３＋、Ｓｍ＾３＋、Ｅｕ＾３＋、Ｇｄ＾３＋、ｄＹ＾３＋、Ｙｂ＾３＋）。利用红外，喇曼，电子自旋共振，紫外和Ｘ射线衍射谱对其进行了表征。配合物的热解性质研究表明，其分解温度范围为４００－４５０℃，还研究了的氧化还原性质。     

( )-12-乙基-1,4,7,10-四氧杂-13-氮杂环十五烷与镧系硝酸盐、硫氰酸盐配合物的合成表征和CD谱

合成了共１５个未见文献报道的三价镧系离子与手性氮杂冠醚（＋）－１２－乙基－１，４，７，１０－四氧杂－１３－氮杂环十五烷（以下以Ｌ（＋）表示）的配合物Ｌｎ（ＮＯ３）３·Ｌ（＋）·Ｈ２Ｏ（Ｌｎ＝Ｌａ、Ｃｅ、Ｐｒ、Ｎｄ）；Ｌｎ（ＳＣＮ）３·Ｌ（＋）·Ｈ２Ｏ（Ｌｎ＝Ｌａ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｇｄ－Ｅｒ、Ｙｂ）。对所合成配合物进行了元素分析、电导、红外、可见吸收光谱、比旋光度和圆二色谱（ＣＤ谱）的测试，并对配合物的有关物理化学性质进行了讨论。     

稀土硝酸盐与邻香兰素缩邻氨基苯甲酸配合物的合成与表征

由邻香兰素缩邻氨基苯甲酸（以Ｈ２Ｌ表示）与稀土硝酸盐作用合成了３种新的固体配合物。对这些配合物进行了元素分析、红外光谱、紫外光谱、差热－热重及摩尔电导分析，确定配合物的组成为［Ｌｎ（ＨＬ）（ＮＯ３）（Ｈ２Ｏ）］ＮＯ３（Ｌｎ＝Ｔｂ，Ｈｏ，Ｌｕ）。推测了配合物的配位方式和结构     

3－乙酰乙酰基－4－羟基香豆素希土配合物的合成和性质

本文报道了稀土与３－乙酰乙酰基－４－羟基香豆素配合物的合成，其化学组成为Ｌｎ（Ｈａａｃ）３．ｎＨ２Ｏ（Ｌｎ为Ｌａ，Ｐｒ，Ｎｄ，Ｇｄ，Ｄｙ，Ｅｒ，ｎ为１或２），基于Ｈ－ＮＭＲ，ＩＲ的结果，提出了稀土离子与配位体４位羟基氧与邻近羰基双齿配位结构，对Ｎｄ＾３＋及Ｅｒ＾３＋配合物的超灵敏吸收带的形状和吸收强度等也作了讨论。     

镧系四元混配化合物[Ln（BA）2（NO3）（phen）]2的合成,晶？…

在酸性介质,含水溶剂中合成了四元混配化合物「Ｌｎ（ＢＡ）２（ＮＯ３）（ｐｈｅｎ）」（ＢＡ＝苯甲酸根;Ｌｎ＝Ｌａ,Ｃｅ,Ｐｒ,Ｎｄ,Ｓｍ,Ｅｕ,Ｄｙ,Ｇｄ,Ｔｂ,Ｅｒ）,用元素分析、ＩＲ、ＤＴＡ＿ＴＧ等方法对配合物进行了珠征,研究服配合物的顺磁性能和荧光性能,镨配合物的单晶衍射结果表明,配合物属三斜晶系,双核,Ｐｒ＾３＋的配位数为９,４个ＢＡ呈二种配位方式,丰富了四元配合物的结构表现形式。     

稀土与H2salen配合物的合成与波谱性质

合成了稀土Ｎ，Ｎ－亚乙基双（水杨醛缩亚胺）（Ｈ２ｓａｌｅｎ）双核配合物，通过元素分析、热分析、紫外、红外、远红外光谱、磁化率及１Ｈ、１３ＣＮＭＲ谱与Ｔ１的测定，确定了他们与前人合成的配合物有所不同，其化学组成为［Ｌｎ２（Ｈ２ｓａｌｅｎ）３（ＮＯ３）４］（ＮＯ３）２·３Ｈ２Ｏ（Ｌｎ＝Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｇｄ，Ｔｂ，Ｅｒ，Ｙｂ及Ｙ），并对它们的配位作用、波谱及可能应用进行了探讨．     

稀土离子(La3+, Gd3+, Yb3+)对线粒体产生活性氧的影响

研究了稀土离子对分离的线粒体产生活性氧(ROS)的影响. 采用荧光光度法跟踪线粒体内H2O2生成的动力学, 发现三种稀土离子(La3+, Gd3+, Yb3+)均能降低线粒体H2O2的生成; 用黄嘌呤-黄嘌呤氧化酶体系进一步证明稀土对超氧阴离子(·O-2)存在清除作用, 而对H2O2无清除作用; 测定了稀土对线粒体ROS代谢酶(谷胱甘肽过氧化物酶和超氧化物歧化酶)的活性影响. 结果表明, 三种稀土离子对线粒体谷胱甘肽过氧化物酶的活性基本没有影响, 而Gd3+和Yb3+稀土离子能明显抑制线粒体超氧化物歧化酶的活性.     

Lanthanide diruthenium(II,III) compounds showing layered and PtS-type open framework structures

Two types of lanthanide diruthenium phosphonate compounds, based on the mixed-valent metal-metal bonded paddlewheel core of Ru(2)(hedp)(2)(3-) [hedp = 1-hydroxyethylidenediphosphonate, CH(3)C(OH)(PO(3))(2)], have been prepared with the formulas Ln(H(2)O)4[Ru(2)(hedp)(2)(H(2)O)2].5.5H(2)O (1.Ln, Ln = La, Ce) and Ln(H(2)O)4[Ru(2)(hedp)(2)(H(2)O)(2)].8H(2)O (2.Ln, Ln = La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er). In both types, each Ru(2)(hedp)2(H2O)23- unit is linked by four Ln(3+)ions through four phosphonate oxygen (OP) atoms and vice versa. The geometries of the {LnO(P4)} group, however, are different in the two cases. In 1.Ln, the geometry of {LnO(P4)} is closer to a distorted plane, and thus a square-grid layer structure is found. In 2.Ln, the geometry of {LnO(P4)} is better described as a distorted tetrahedron; hence, a unique PtS-type open-framework structure is observed. The channels generated in structures 2.Ln are filled with water aggregates with extensive hydrogen-bond interactions. The magnetic and electrochemical properties are also investigated.     

Structures and properties of porous coordination polymers based on lanthanide carboxylate building units

A series of 3-D lanthanide porous coordination polymers, [Ln(6)(BDC)(9)(DMF)(6)(H(2)O)(3)·3DMF](n) [Ln = La, 1; Ce, 2; Nd, 3], [Ln(2)(BDC)(3)(DMF)(2)(H(2)O)(2)](n) [Ln = Y, 4; Dy, 5; Eu, 6], [Ln(2)(ADB)(3)(DMSO)(4)·6DMSO·8H(2)O](n) [Ln = Ce, 7; Sm, 8; Eu, 9; Gd, 10], {[Ce(3)(ADB)(3)(HADB)(3)]·30DMSO·29H(2)O}(n) (11), and [Ce(2)(ADB)(3)(H(2)O)(3)](n) (12) (H(2)BDC = benzene-1,4-dicarboxylic acid and H(2)ADB = 4,4'-azodibenzoic acid), have been synthesized and characterized. In 1-3, the adjacent Ln(III) ions are intraconnected to form 1-D metal-carboxylate oxygen chain-shaped building units, [Ln(4)(CO(2))(12)](n), that constructed a 3-D framework with 4 × 7 ? rhombic channels. In 4-6, the dimeric Ln(III) ions are interlinked to yield scaffolds with 3-D interconnecting tunnels. Compounds 7-10 are all 3-D interpenetrating structures with the CaB6-type topology structure. Compound 11 is constructed by ADB spacers and trinulcear Ce nodes with a NaCl-type topology structure and a 1.9-nm open channel system. In 12, the adjacent Ce(III) ions are intraconnected to form 1-D metal-carboxylate oxygen chain-shaped building units, [Ln(4)(CO(2))(12)](n), and give rise to a 3-D framework. Moreover, 6 exhibits characteristic red luminescence properties of Eu(III) complexes. The magnetic susceptibilities, over a temperature range of 1.8-300 K, of 3, 6, and 7 have also been investigated; the results show paramagnetic properties.     

A series of novel lanthanide polyoxometalates: condensation of building blocks dependent on the nature of rare earth cations

A series of novel lanthanide polyoxomolybdates was synthesized by reaction of lanthanide cations with the Anderson type anion (TeMo(6)O(24))(6-). The polyoxometalates K(6n)(TeMo(6)O(24))(n)[(Ln(H(2)O)(7))(2)(TeMo(6)O(24))](n)[middle dot]16nH(2)O (Ln = Eu, Gd) and K(3n)[Ln(H(2)O)(5)(TeMo(6)O(24))](n)[middle dot]6nH(2)O (Ln = Tb, Dy, Ho, Er) were characterized by X-ray structure analysis, elemental analysis and IR spectroscopy. We found that the solid-state structures of Ln/(TeMo(6)O(24))(6-) compounds are strongly dependent on the lanthanide cations, and therefore represent a rare example for different arrangements of building units depending on the nature of the rare earth cations. While the Eu(3+) and Gd(3+) cations achieve ninefold coordination by seven water molecules and two terminal oxygen atoms of the (TeMo(6)O(24))(6-) anions, the Tb(3+), Dy(3+), Ho(3+) and Er(3+) cations are coordinated by five water molecules, two terminal oxygen atoms and one molybdenum-bridging oxygen atom belonging to the (TeMo(6)O(24))(6-) anion. The europium and gadolinium substituted compounds contain infinite one-dimensional [(Ln(H(2)O)(7))(2)(TeMo(6)O(24))](n) chains; the terbium, dysprosium, holmium and erbium compounds contain infinite one-dimensional [Ln(H(2)O)(5)(TeMo(6)O(24))](n)(3n-) chains.     

Synthesis, structures, and magnetic properties of face-sharing heterodinuclear Ni(II)-Ln(III) (Ln = Eu, Gd, Tb, Dy) complexes

Heterodinuclear [(Ni (II)L)Ln (III)(hfac) 2(EtOH)] (H 3L = 1,1,1-tris[(salicylideneamino)methyl]ethane; Ln = Eu, Gd, Tb, and Dy; hfac = hexafluoroacetylacetonate) complexes ( 1.Ln) were prepared by treating [Ni(H 1.5L)]Cl 0.5 ( 1) with [Ln(hfac) 3(H 2O) 2] and triethylamine in ethanol (1:1:1). All 1.Ln complexes ( 1.Eu, 1.Gd, 1.Tb, and 1.Dy) crystallized in the triclinic space group P1 (No. 2) with Z = 2 with very similar structures. Each complex is a face-sharing dinuclear molecule. The Ni (II) ion is coordinated by the L (3-) ligand in a N 3O 3 coordination sphere, and the three phenolate oxygen atoms coordinate to an Ln (III) ion as bridging atoms. The Ln (III) ion is eight-coordinate, with four oxygen atoms of two hfac (-)'s, three phenolate oxygen atoms of L (3-), and one ethanol oxygen atom coordinated. Temperature-dependent magnetic susceptibility and field-dependent magnetization measurements showed a ferromagnetic interaction between Ni (II) and Gd (III) in 1.Gd. The Ni (II)-Ln (III) magnetic interactions in 1.Eu, 1.Tb, and 1.Dy were evaluated by comparing their magnetic susceptibilities with those of the isostructural Zn (II)-Ln (III) complexes, [(ZnL)Ln(hfac) 2(EtOH)] ( 2.Ln) containing a diamagnetic Zn (II) ion. A ferromagnetic interaction was indicated in 1.Tb and 1.Dy, while the interaction between Ni (II) and Eu (III) was negligible in 1.Eu. The magnetic behaviors of 1.Dy and 2.Dy were analyzed theoretically to give insight into the sublevel structures of the Dy (III) ion and its coupling with Ni (II). Frequency dependence in the ac susceptibility signals was observed in 1.Dy.     

Structural analysis of nine-coordinate lanthanide complexes: steric control of the metal-water distance across the series

The structures of 10 isomorphous lanthanide (Ln) complexes of a chiral DOTA tetra-amide ligand (L(1)), [LnL(1)(H(2)O)](CF(3)SO(3))(3).3H(2)O, crystallizing in space group P2(1), have been studied by single-crystal X-ray diffraction. The Ln coordination is a O(4)N(4) square antiprism, the O(4) base of which is capped by an aqua ligand. The sterically demanding position of the latter results in the lengthening of the Ln-OH(2) distance along the Pr to Lu series by 0.06 A (after allowing for the lanthanide contraction). In parallel, the distance between the bound water oxygen and the second-sphere water oxygen is reduced from 3.17 A (Pr) to 3.04 A (Lu), consistent with the enhanced hydrogen bond acceptor ability of the coordinated water oxygen across the series. A Cambridge Structural Database survey of [Ln(H(2)O)(9)](CF(3)SO(3))(3) salts (space group P6(3)/m) and of six reported isostructural complexes of DOTA [L(2)] revealed a similar trend. The implications of the resultant destabilization of the ground state structure for the water interchange process are discussed.     

Syntheses, crystal structures, and magnetic properties of [Ln(III)2(Succinate)3(H2O)2].0.5H2O [Ln = Pr, Nd, Sm, Eu, Gd, and Dy] polymeric networks: unusual ferromagnetic coupling in Gd derivative

Lanthanide-organic coordination polymeric networks of [Ln(III)2(suc)3(H2O)2].0.5H2O [suc = succinate dianion, Ln = Pr (1), Nd (2), Sm (3), Eu (4), Gd (5), and Dy (6)] have been synthesized and characterized by single-crystal X-ray diffraction analyses. The structural determination reveals that complexes are isomorphous, all crystallizing in monoclinic system, space group I2/a(.) The complexes possess a 3D architecture with Ln ion in a nine-coordination geometry attained by eight oxygen atoms from succinate and one oxygen atom from an aqua ligand. Low-temperature magnetic study indicates that ferromagnetic interaction is present in case of Gd(III) and Dy(III). Antiferromagnetic interaction is observed for the rest of the complexes. Density functional theory calculations are performed which support the existence of a superexchange ferromagnetic coupling in Gd(III) ions, whereas classical crystal field model has been applied to study the complexes 1, 2, 3, and 6.     

Three-dimensional lanthanide(III)-copper(II) compounds based on an unsymmetrical 2-pyridylphosphonate ligand: an experimental and theoretical study

Based on an unsymmetrical 2-pyridylphosphonate ligand, two types of Ln(III)-Cu(II) compounds with three-dimensional structures were obtained under hydrothermal conditions, namely, Ln(2)Cu(3)(C(5)H(4)NPO(3))(6).4H(2)O (1.Ln; Ln=La, Ce, Pr, Nd) and Ln(2)Cu(3)(C(5)H(4)NPO(3))(6) (2.Ln; Ln=Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho). Compounds 1.Ln are isostructural and crystallize in chiral cubic space group I2(1)3. In these structures, each Ln ion is nine-coordinate and has a tricapped triprismatic geometry, while each Cu center is six-coordinate with an octahedral environment. The {LnO(9)} polyhedra and {CuN(2)O(4)} octahedra are connected by edge sharing to form an inorganic open framework structure with a 3-connected 10-gon (10,3) topology in which the Ln and Cu atoms are alternately linked by the phosphonate oxygen atoms. Compounds 2.Ln are isostructural and crystallize in trigonal space group R3. In these structures, the {LnO(6)} octahedra are triply bridged by the {CPO(3)} tetrahedra by corner sharing to form an infinite chain along the c axis. Each chain is connected to its six equivalents through corner sharing of {CPO(3)} tetrahedra and {CuN(2)O(2)} planes to form a three-dimensional framework structure in which the Ln and Cu atoms are linked purely by O-P-O units. The formation of these two types of structures is rationalized by quantum chemical calculations, which showed that both the lanthanide contraction and the electron configuration of Cu(II) play important roles. When Cu(II) was replaced by Zn(II), only the first type of compounds resulted. The magnetic properties of complexes 1.Ln and 2.Ln were investigated. The nature of Ln(III)-Cu(II) (Ln=Ce, Pr, Nd) interactions is illustrated by comparison with their Ln(III)-Zn(II) analogues.     

Crystal Structures of Ln（NO3）3（Ln=La,Yb）Complexes with 12—crown—4

ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｓｏｆＬｎ（ＮＯ_３）_３（Ｌｎ＝Ｌａ，Ｙｂ）Ｃｏｍｐｌｅｘｅｓｗｉｔｈ１２－ｃｒｏｗｎ－４ＭａｏＪｉａｎｇ－Ｇａｏ；ＪｉｎＺｈｏｎｇ－Ｓｈｅｎｇ；ＹｕＦｅｎｇ－Ｌａｎ（ＬａｂｏｒａｔｏｒｙｏｆＲａｒｅＥａｒｔｈＣｈｅｍ...     

A series of trinuclear Cu(II)Ln(III)Cu(II) complexes derived from 2,6-Di(acetoacetyl)pyridine: synthesis, structure, and magnetism

A series of trinuclear Cu(II)Ln(III)Cu(II) complexes with the bridging ligand 2,6-di(acetoacetyl)pyridine have been prepared by one-pot reaction with Cu(NO(3))(2).3H(2)O and Ln(NO(3))(3).nH(2)O in methanol. X-ray crystallographic studies for all the complexes indicate that two L(2)(-) ligands selectively sandwich two Cu(II) ions with the 1,3-diketonate entities and one Ln(III) ion with the 2,6-acetylpyridine entity to form a trinuclear CuLnCu core bridged by the enolate oxygen atoms. Cryomagnetic properties of the complexes are studied with respect to the electronic structure of the Ln ion.