The effects of substituents, molecular symmetry, ionic radius of the rare earth metal, and macrocycle on the electronic absorption spectra characteristics of sandwich-type bis(phthalocyaninato) and mixed (phthalocyaninato)(porphyrinato) rare earth complexes

Polyhedron ◽  
2007 ◽  
Vol 26 (14) ◽  
pp. 3939-3946 ◽  
Author(s):  
Fan-Li Lu
Keyword(s):  
Rare Earth ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Rare Earth Metal ◽  
Ionic Radius ◽  
Electronic Absorption Spectra ◽  
Earth Metal ◽  
Rare Earth Complexes ◽  
Molecular Symmetry ◽  
Sandwich Type

Bis(oxazoline)-derived N-heterocyclic carbene ligated rare-earth metal complexes: synthesis, structure, and polymerization performance

2018 ◽  
Vol 47 (39) ◽  
pp. 13815-13823 ◽  
Author(s):  
Yu Pan ◽  
Aijing Zhao ◽  
Yang Li ◽  
Wenqiang Li ◽  
Yat-Ming So ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Rare Earth Complexes ◽  
Good Activity ◽  
First Time ◽  
Rare Earth Metal Complexes

Bis(oxazoline)-derived NHC supported rare-earth complexes have been synthesized for the first time and showed good activity for 1-hexene (co)polymerization.

Synthesis and structural characterization of amido heteroscorpionate rare-earth metal complexes and hydroamination of aminoalkenes

2015 ◽  
Vol 39 (10) ◽  
pp. 7672-7681 ◽  
Author(s):  
Antonio Otero ◽  
Agustín Lara-Sánchez ◽  
José A. Castro-Osma ◽  
Isabel Márquez-Segovia ◽  
Carlos Alonso-Moreno ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Structural Characterization ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Rare Earth Complexes ◽  
Rare Earth Metal Complexes

New amide heteroscorpionate rare-earth complexes were developed and used as efficient catalysts for the intramolecular hydroamination of aminoalkenes.

Electronic absorption spectra of rare earth (III) species in NaCl–2CsCl eutectic based melts

2016 ◽  
Author(s):  
V. A. Volkovich ◽  
A. B. Ivanov ◽  
S. M. Yakimov ◽  
D. V. Tsarevskii ◽  
O. A. Golovanova ◽  
...  
Keyword(s):  
Rare Earth ◽  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra

Discotic liquid crystals of transition metal complexes 41: influence of rare-earth metal ions on clearing points of sandwich-type bis[octakis(3,4-didodecyloxyphenoxy)phthalocyaninato]lanthanoid(III) complexes

2009 ◽  
Vol 13 (08n09) ◽  
pp. 927-932 ◽  
Author(s):  
Hidetomo Mukai ◽  
Kazuaki Hatsusaka ◽  
Kazuchika Ohta
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Metal Ions ◽  
Metal Complexes ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Central Metal ◽  
Phase Transition Behavior ◽  
Transition Behavior ◽  
Sandwich Type

It has long been believed that the phase transition behavior and clearing points (c.p.s.) of phthalocyanine-based metallomesogens scarcely change regardless of the kind of central metal. In this work, we have synthesized a series of novel sandwich-type phthalocyanine-based lanthanoid complexes, bis[2,3,9,10,16,17,23,24-octakis(3,4-didodecyloxyphenoxy)phthalocyaninato]lanthanoid(III) (abbreviated as {[(C12O)2PhO]8Pc}2M, M = La, Ce, Eu, Gd, Tb, Yb and Lu : 1–7). Their mesomorphic properties were investigated by polarization microscope, DSC and temperature-dependent X-ray diffraction techniques to compare with the phase transition behavior and c.p.s. of the complexes. Very interestingly, the c.p.s. of these seven rare-earth metal complexes increased in an order of La (1) → Ce (2) → Eu (3), reached to a maximum for Gd (4), and decreased in an order of Tb (5) → Yb (6) → Lu (7). We have noticed that their rise and fall of c.p.s. correspond to the values of total spin quantum number (S) of the central rare-earth metal ions. Thus, it was found, for the first time in metallomesogens, that the S values of central rare-earth metal ions strongly influence their c.p.s.

Orientations of a Nematic Liquid Crystal in Sandwich-Type Cells Studied by Polarized Electronic Absorption Spectra

1992 ◽  
Vol 65 (11) ◽  
pp. 3135-3140
Author(s):  
Michio Kobayashi ◽  
Yoshinori Kato ◽  
Norio Koma ◽  
Naobumi Taki ◽  
Kazunori Maruyama ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Absorption Spectra ◽  
Nematic Liquid Crystal ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Sandwich Type

Small molecule activation by mixed methyl/methylidene rare earth metal complexes

2016 ◽  
Vol 45 (15) ◽  
pp. 6641-6649 ◽  
Author(s):  
Jianquan Hong ◽  
Zhenhua Li ◽  
Zhening Chen ◽  
Linhong Weng ◽  
Xigeng Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Metal Complexes ◽  
Small Molecule ◽  
Rare Earth Metal ◽  
Earth Metal ◽  
Rare Earth Complexes ◽  
Small Molecule Activation ◽  
Rare Earth Metal Complexes

Diverse reactivity patterns of mixed tetramethyl/methylidene rare-earth complexes bearing bulky benzamidinate coligands with PhCN, alkynes, and CS2 have been established and fully characterized.

Sign in / Sign up

Export Citation Format

Share Document