Salen-甲醛 (SF) 树脂聚合物球体通过 Stöber 法由 4,4'-二羟基salen(N , N '-bis-(4-hydroxysalicylidene)-ethylenediamine;一种四齿 N 2 O 2 Schiff 碱配体)和甲醛合成. 通过乙二胺与2,4-二羟基苯甲醛在甲醇中的缩合制备salen前体。SF 树脂胶体球也分别使用 Pluronic F127 和氨作为致孔剂和催化剂 (SF-P) 制备。此外,合成了相应的 SF-P 的 Mn( II )-配位聚合物球 (SF-P-Mn( II )))。所有上述样品的相应单分散碳球也通过热解技术获得。所有产品均采用传统的显微和光谱技术以及其他物理方法(如 BET 分析)进行了表征。发现SF树脂球的碳化导致碳球的比表面积在499-528 m 2 g -1范围内,平均孔径在2.58-3.08 nm范围内。SF-MW HT的氮含量(在甲醇/水混合物中水热获得)和
APOPTOTIC AND ANTI-TUMOR ACTIVITIES OF METALLO-SALENS
申请人:Mandal Subhrangsu S.
公开号:US20090326061A1
公开(公告)日:2009-12-31
The present invention describes the synthesis and biochemical activities of metallo-salen compounds and their derivatives. The Mn(III)-salen and Fe(III)-salen derivatives of the present invention are potential anti-tumor agents, that affect cell viability, induce strong apoptotic activity, cause nuclear condensation, fragmentation, and ultimately death in breast cancer cells MCF-7.
A comparative study on the catalytic performance of heme and non-heme catalysts: Metal porphyrins versus metal Schiff bases
作者:Atefeh Talaeizadeh、Mahdi Tofighi、Saeed Zakavi
DOI:10.1002/aoc.3967
日期:2018.1
tetra‐n‐butylammonium periodate (TBAP) and tetra‐n‐butyl‐ammonium Oxone (TBAO) have been investigated and compared. Although the metalloporphyrins showed an increased catalytic activity relative to the Schiff base complexes, the former provided no significant catalytic advantage over the latter. Also, a comparable or slightly higher oxidative stability was observed for the Schiff base complexes under the reaction conditions
Influence of the ligand structure on the properties of bidentate salicylaldimine nickel(II) complexes in ethylene oligomerization
作者:Yang Li、Lijun Guo、Feng Li、Jin Huang、Dan Li、Na Zhang、Cuiqin Li
DOI:10.1007/s11243-021-00447-7
日期:2021.4
ratio was 500, the temperature was 25 °C, the reaction time was 30 min and the pressure of ethylene was 0.7 MPa. Complexes C1–C3 with different lengths of the bridged group were evaluated for ethylene oligomerization, and the results showed that the length of the alkyl chain in the ligand had little influence on the catalytic properties. Complex C4 based on ethanediamine-bridged salicylaldimine and
成功合成了三个带有二胺桥联的4-羟基水杨醛配体(L1 - L3)的镍(II)配合物(C1 - C3),并通过物理化学和光谱法对所有化合物进行了表征。系统研究了低聚参数对复合物C2催化性能的影响。结果表明,低聚参数在催化性能中起着重要作用,催化活性为19.90×10 4 g /(mol·Ni·h)和C 8+的选择性。当预催化剂剂量为5μmol,Al / Ni摩尔比为500,温度为25℃,反应时间为30分钟且乙烯的压力为0.7MPa时,烯烃为60.25%。评价了具有不同桥联基团长度的配合物C1 - C3的乙烯低聚反应,结果表明,配体中烷基链的长度对催化性能的影响很小。在我们以前的工作中,还研究了基于乙二胺桥联的水杨醛亚胺的配合物C4和基于超支化水杨醛亚胺的C5,以研究配体结构对催化性能的影响。催化活性[31.80×10 4 g /(mol·Ni·h)]和配合物C4的低碳低聚物的含量(70.1
Encapsulated Schiff base nickel complex in zeolite Y: Correlation between catalytic activities and extent of distortion supported by experimental and DFT studies
作者:Archana Choudhary、Bidisa Das、Saumi Ray
DOI:10.1016/j.ica.2017.04.003
日期:2017.6
base complexes of general formulae NiL with L as N, Ń-bis(4-hydroxy salicylidene)ethylenediamine (4-OH-salen) when encapsulated in the supercage of zeoliteY, the complex adopts non-planar geometry. The detailed characterization studies of the 4-OH-Ni-salen complex when compared with Ni-salen complex encapsulated in zeoliteY (Ni-salen-Y) Choudhary et al. (2016) have suggested that the complex undergoes