scholarly journals Novel lanthanide(III) 4-methylbenzoylhydrazide complexes as precursors for lanthanide oxide nanophotocatalysts

RSC Advances ◽  
2019 ◽  
Vol 9 (72) ◽  
pp. 42010-42019 ◽  
Author(s):  
S. A. Abou El-Enein ◽  
A. M. Ali ◽  
Y. K. Abdel-Monem ◽  
M. H. Senna ◽  
Metwally Madkour
Keyword(s):  
Metal Complexes ◽  
Lanthanide Oxide ◽  
Lanthanide Nitrate ◽  
Nitrate Salts

A series of metal complexes were prepared from separate reactions of lanthanide nitrate salts (La(iii), Ce(iii), Sm(iii), Gd(iii) and Ho(iii)) with 4-methylbenzoylhydrazide.

scholarly journals Tetraaqua[2,6-diacetylpyridine bis(semicarbazone)]samarium(III) trinitrate

IUCrData ◽  
2018 ◽  
Vol 3 (10) ◽  
Author(s):  
Michael Gioia ◽  
Guy Crundwell ◽  
Barry L. Westcott
Keyword(s):  
Hydrogen Bonding ◽  
Metal Cation ◽  
Nitrate Group ◽  
Trigonal Prism ◽  
Water Molecules ◽  
Intermolecular Hydrogen Bonding ◽  
Lanthanide Nitrate ◽  
Tricapped Trigonal Prism ◽  
Nitrate Salts ◽  
Coordinated Water

The structure of tetraaqua[2,6-diacetylpyridine bis(semicarbazone)]samarium(III) trinitrate, [Sm(C11H15N7O2)(H2O)4](NO3)3, has monoclinic (P21/c) symmetry. The 2,6-diacetylpyridine (DAPSC) ligand is pentadentate. The coordination of the DAPSC ligand and four coordinated water molecules around the metal cation is best described as a distorted tricapped trigonal prism. The structure displays intermolecular hydrogen bonding. The structure is isomorphous with many other published lanthanide(III) nitrate salts with the DAPSC ligand, 2,6-diacetylpyridinebis(semicarbazone). One of the three nitrate counter-anions is disordered, which is consistent with the structures of other +3 lanthanide nitrate salts with DAPSC. Refinement of occupancies for the disordered nitrate group gave major and minor occupancies of 54.9 (14) and 45.1 (14)%, respectively.

Mechanochemical changes on cyclometalated Ir(iii) acyclic carbene complexes – design and tuning of luminescent mechanochromic transition metal complexes

2020 ◽  
Vol 7 (3) ◽  
pp. 786-794 ◽  
Author(s):  
Jingqi Han ◽  
Kin-Man Tang ◽  
Shun-Cheung Cheng ◽  
Chi-On Ng ◽  
Yuen-Kiu Chun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Carbene Complexes ◽  
New Class

A new class of luminescent cyclometalated Ir(iii) complexes with readily tunable mechanochromic properties derived from the mechanically induced trans-to-cis isomerization have been developed.

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