scholarly journals Self-Assembled Heterometallic Complexes by Incorporation of Calcium or Strontium Ion into a Manganese(II) 12-Metallacrown-3 Framework Supported by a Tripodal Ligand with Pyridine-Carboxylate Motifs: Stability in Their Manganese(III) Oxidized Form

Author(s):  
Eric Gouré ◽  
Bertrand Gerey ◽  
Catalina N. Astudillo ◽  
Jacques Pécaut ◽  
Selim Sirach ◽  
...  
Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1595
Author(s):  
Greg Brewer ◽  
Raymond J. Butcher ◽  
Peter Zavalij

The 3:1 condensation of 5-methyl-1H-pyrazole-3-carboxaldehyde (MepyrzH) with tris(2-aminoethyl)amine (tren) gives the tripodal ligand tren(MePyrzH)3. Aerial oxidation of a solution of cobalt(II) with this ligand in the presence of base results in the isolation of the insoluble Co(tren)(MePyrz)3. This complex reacts with acids, HCl/NaClO4, NH4ClO4, NH4BF4, and NH4I to give the crystalline compounds Co(tren)(MePyrzH)3(ClO4)3, {[Co(tren)(MePyrzH0.5)3](ClO4)1.5}2 {[Co(tren)(MePyrzH0.5)3](BF4)1.5}2 and [Co(tren)(MePyrzH)3][Co(tren)(MePyrzH)3]I2. The latter three complexes are dimeric, held together by three Npyrazole –H…Npyrazolate hydrogen bonds. The structures and symmetries of these homochiral dimers or pseudodimers are discussed in terms of their space group. Possible applications of these complexes by incorporation into new materials are mentioned.


2016 ◽  
Vol 40 (8) ◽  
pp. 6998-7010 ◽  
Author(s):  
Wen-Kui Dong ◽  
Jian-Chun Ma ◽  
Li-Chun Zhu ◽  
Yang Zhang

Nine Ni(ii)–Ln(iii) complexes were prepared using 3-MeOsalamo and structurally characterized, and their magnetic properties were studied.


2021 ◽  
Author(s):  
Qin Jiang ◽  
Xinda Yang ◽  
Pan Xiang ◽  
Marta Dudek ◽  
Katarzyna Matczyszyn ◽  
...  

Heterometallic binuclear Ru-Pt and trinuclear Zn-Pt complexes were prepared via self-assembly by attaching PtII-tpy (tpy = 2,2’:6’,2”-terpyridine) onto RuII-tpy and ZnII-bis(tpy) moiety. The visible absorption bands for Ru-Pt complexes are...


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