Sulfadiazine/dimethylsulfadiazine transition metal complexes: Synthesis, crystal structures and magnetic properties
Sulfadiazine/dimethylsulfadiazine transition metal complexes: Synthesis, crystal structures and magnetic properties
复制标题
磺胺嘧啶/二甲基磺胺嘧啶过渡金属配合物：合成、晶体结构和磁性
DOI：
10.1016/j.poly.2015.08.028
复制
发表时间：
2015
期刊：
影响因子：
2.6
通讯作者：
H. Kou
中科院分区：
文献类型：
--
作者：
Wen;A. Cui;H. Kou
磺胺嘧啶（Hsulf）和二甲基磺胺嘧啶（Hdmsulf）被用来组装二价过渡金属配合物（Cu、Ni或Co）。通过控制金属离子、配体和溶剂，合成了双核配合物1（Cu 2）、四核配合物2（Ni 4）和四核配合物3（Co 4）以及二维聚合物4。对于配合物1，两个Cu（II）离子通过四个磺基配体的四个N双键C单键N基团桥接，而对于配合物2，四个Ni（II）离子通过四个磺胺嘧啶配体的嘧啶环交替桥接，形成中性正方形Ni4分子。在配合物3中，四个Co（II）离子被四个μ 3-OMe −基团桥接，产生一个Co4O4立方烷。配合物4具有二维网格结构，Co（II）离子通过配体dmsulf −的远程氨基桥接。磁化率测量表明，去溶剂化的配合物（1d）在相邻的Cu（II）离子之间表现出反铁磁耦合，2J值为− 90.0 cm − 1，而嘧啶环在配合物2中传递弱的反铁磁耦合。配合物3·8H2O通过甲氧基桥表现出铁磁耦合，桥连Co单键O单键Co键角为96 - 99 °。配合物4由于Co（II）离子的远程分离而显示出单核钴（II）配合物的磁性。
Sulfadiazine (Hsulf) and dimethylsulfadiazine (Hdmsulf) were used to assemble divalent transition metal complexes (Cu, Ni or Co). Solvated complexes1–4, dinuclear1(Cu2), tetranuclear2(Ni4) and3(Co4), and two-dimensional polymeric4, were synthesized by controlling the metal ions, ligands and solvents. For complex1, two Cu(II) ions are bridged by four Ndouble bondCsingle bondN groups of four sulf−ligands, while for complex2, four Ni(II) ions are alternatively bridged by the pyrimidine rings of four sulfadiazine ligands, forming a neutral square Ni4molecule. In complex3, four Co(II) ions are bridged by fourμ3-OMe−groups, yielding a Co4O4cubane. Complex4possesses a 2D grid structure with the Co(II) ions bridged by the remote amino groups of the ligand dmsulf−. Magnetic susceptibility measurements show that the desolvated complex (1d) exhibits antiferromagnetic coupling between adjacent Cu(II) ions with the 2Jvalue of −90.0 cm−1, and the pyrimidine rings transmit weak antiferromagnetic coupling in complex2. Complex3·8H2O shows ferromagnetic coupling via the methoxido bridges with the bridging Cosingle bondOsingle bondCo bond angles of 96–99°. Complex4displays a magnetic property for mononuclear cobalt(II) complexes due to the remote separation of Co(II) ions.
影响因子：
15
作者：
Noveron, JC;Lah, MS;Stang, PJ
通讯作者：
Stang, PJ