Therefore, each L– ligand has a total coordination number of four but with different carboxylate modes, namely, κ4-N,N,O,O (1,1) in 1 and κ4-N,N,O,O′ (1,3) in 2 for the C(1)–O–C(2) group. Thus, the coordination spheres are MO2N2O in both cases, though 1 is distorted trigonal bipyramidal, whereas 2 is square pyramidal. Antiferromagnetic (AFM) coupling (17 cm–1) is seen only in 1, though the best fit was obtained
Alkali‐Metal‐Templated Self‐Assembly of Nickel(II) [12‐MC‐3] Metallacoronates Based on Bis(pyrazol‐1‐yl)acetato Ligands
作者:Andreas Beyer、Marc S. von Gernler、Stephan Pflock、Gazi Türkoglu、Lisa Müller、Achim Zahl、Klaus Gieb、Paul Müller、Thomas Drewello、Nicolai Burzlaff
DOI:10.1002/ejic.201701400
日期:2018.2.14
metal‐mediated template syntheses of [NaNi(acac)(bdmpza)}3]NO3 (7), [NaNi(acac)(bdmpza)}3]I (8) and [LiNi(acac)(bdmpza)}3]NO3 (9) are reported. ESI MS allowed a detailed characterization in solution and is supported by X‐ray structure analysis. Compounds 7, 8 and 9 exhibit [12‐MC‐3] metallacrown structures with a sixfold coordinated alkali metal ion in the center. The magneticproperties are studied by SQUID
四种基于乙酸双(吡唑-1-基)或双(3,5-二甲基吡唑-1-基)乙酸的双配体镍(II)配合物[Ni(bdmpzmp)2 ](1的合成和结构),[Ni(bdmpzpen)2 ](2),[Ni(bdmpzaza 2)2 ](3)和[Ni(bpza)2 ](4)被描述。单晶结构测定的结果显示对于所有四个络合物κ 3的蝎型配体的-coordination。位阻双(3,5-二叔丁基吡唑-1-基)乙酸酯(bd t bpza)配体允许合成镍(II)氯离子络合物[Ni(bd t bpza)Cl](5)。此外,可以通过自我控制形成新型三核线性络合物[Ni(bdmpza)2 Ni(acac)(bdmpza)} 2 ](6)[bdmpza =双(3,5-二甲基吡唑-1-基)乙酸盐] [Na Ni(acac)(bdmpza)} 3 ] NO 3(7),[Na Ni(acac)(bdmpza)} 3 ] I(
EPR and electrochemical interpretation of bispyrazolylacetate anchored Ni(<scp>ii</scp>) and Mn(<scp>ii</scp>) complexes: cytotoxicity and anti-proliferative activity towards human cancer cell lines
作者:Kuheli Das、Belete B. Beyene、Amitabha Datta、Eugenio Garribba、Catarina Roma-Rodrigues、Ana Silva、Alexandra R. Fernandes、Chen-Hsiung Hung
DOI:10.1039/c8nj01033a
日期:——
The cytotoxicity and antiproliferative activity are carried out along with EPR and redox interpretation.
细胞毒性和抑制增殖活性与EPR和氧化还原解释一起进行。
Synthesis, structure, and catecholase activity of bispyrazolylacetate copper(<scp>ii</scp>) complexes
作者:Małgorzata J. Gajewska、Wei-Min Ching、Yuh-Sheng Wen、Chen-Hsiung Hung
DOI:10.1039/c4dt01467g
日期:——
Heteroleptic copper(ii) complexes containing bis(3,5-di-t-butylpyrazol-1-yl)acetate and nitrogen heterocyclic co-ligands identified the influence of co-ligands on the conformation and catecholase-like catalytic activity.
Bis(pyrazol-1-yl)acetates as Tripodal Heteroscorpionate Ligands in Iron Chemistry: Syntheses and Structures of Iron(II) and Iron(III) Complexes with bpza, bdmpza, and bd<i>t</i>bpza Ligands
crossover to the low-spin state was observed in the temperature range of 5-350 K. 4a and 4b are synthesized in one step and in high yield from [NEt(4)](2)[Cl(3)FeOFeCl(3)]. 4a and 4b are iron(III) high-spin complexes. Crystallographic information: 2c (C(24)H(39)ClFeN(4)O(2).CH(2)Cl(2).CH(3)CN) is triclinic, P1, a = 12.171(16) A, b = 12.851(14) A, c = 13.390(13) A, alpha = 98.61(9) degrees, beta = 113.51(11)