solvent systems. Structural analysis reveals that each salen-type ligand provides a heptadentate coordination pocket (N4O3) to encapsulate a DyIII ion and all of the DyIII centers in 1–4 adopt a distorted square antiprism geometry with D4d symmetry. Magnetic studies showed that compound 1 did not exhibit single-molecule magnetic (SMMs) behavior. With the introduction of different lattice solvents, compounds
一系列双核镝化合物,即[Dy(api)] 2 ( 1 )、[Dy(api)] 2 ·2CH 2 Cl 2 ( 2 )、[Dy(Clapi)] 2 ·2C 4 H 8 O ( 3 )、[Dy(Clapi)] 2 ·2C 3 H 6 O ( 4 ) (H 3 api = 2-(2-羟基苯基)-1,3-双[4-(2-羟基苯基)-3-azabut -3-烯基]-1,3-咪唑啉;H 3 Clapi = 2-(2'-羟基-5'-氯苯基)-1,3-双[3'-氮杂-4'-(2''-羟基-5''-氯苯基)prop-4'-en-1'-yl]-1,3-imidazolidine),已通过salen型配体H的反应分离3 api/H 3 Clapi 与 DyCl 3 ·6H 2 O 在不同的溶剂系统中。结构分析表明,每个salen型配体提供一个七齿配位口袋(N 4 O 3)来封装Dy III离子,并且1-4中的所有Dy
Synthesis, Crystal Structure, and Spectroscopic and Magnetic Properties of a Dinuclear Iron(III) Complex Asymmetrically Bridged by a Phenoxo and a Methoxo Group
作者:C. T. Zeyrek、A. Elmali、Y. Elerman
DOI:10.1515/znb-2005-0905
日期:2005.9.1
A new dinuclear iron(III) derivative Fe2L(OCH3)Cl2 (L = 1,3-bis[N-(5-chloro-2-hydroxybenzylidene)- 2-aminoethyl]-2-(5-chloro-2-hydroxyphenyl)imidazolidine) has been synthesized, it crystal structure determined and magnetically characterized. The two iron(III) ions are asymmetrically bridged by a phenoxo and a methoxo group and separated by 3.150(2)Å . The magnetic susceptibility of the complex was
作者:Yang, Li-Wei、Liu, Shuang、Wong, Ernest、Rettig, Steven J.、Orvig, Chris
DOI:——
日期:——
Synthesis and Crystal Structures of a New μ-Bis(tetradentate) Schiff Base Ligand and its Mononuclear Iron(III) Complex: Iron(III) Induced Imidazolidine Ring Hydrolysis of Binucleating Schiff Base Ligand
作者:C. T. Zeyrek、A. Elmali、Y. Elerman
DOI:10.1515/znb-2005-0507
日期:2005.5.1
The μ-bis(tetradentate) ligand, [C27H26Cl3N4O4], H3L′, 1,3-bis[N-(5-chloro-2-hydroxybenzylidene)- 2-aminoethyl]-2-(5-chloro-2-hydroxyphenyl)imidazolidine and its mononuclear iron(III) complex, [Fe(L)](ClO4), L = N, N′-bis(5-chloro-2-hydroxybenzylidene)-triethylenetetramine have been synthesized and their crystal structures determined. Minimum energy conformations of the ligand were calculated (MOPAC
Solvent orientation in the crystal lattice producing distinct magnetic dynamics in two binuclear Dy(<scp>iii</scp>) polymorphs with a polydentate Schiff base ligand
Two Dy(III) polymorphs, [Dy(Clapi)]2·(CH2Cl2)2 (H3Clapi = 2-(2′-hydroxy-5′-chlorophenyl)-1,3-bis[3′-aza-4′-(2′′-hydroxy-5′′-chlorophenyl)prop-4′-en-1′-yl]-1,3-imidazolidine), have been obtained, crystallizing in space groups P21/c (1a) and C2/c (1b), respectively. Both 1a and 1b have an identical eight-coordinated Dy(III) configuration with D4d symmetry; their only difference is the lattice orientation