Vibrational spectroscopic analysis of group 6 metal hexacarbonyls in the solid state

1994 ◽  
Vol 90 (9) ◽  
pp. 1265 ◽  
Author(s):  
Upali A. Jayasooriya
2019 ◽  
Vol 781 ◽  
pp. 255-260 ◽  
Author(s):  
Wei Zhang ◽  
Huan Shen ◽  
Xiu-li Hu ◽  
Yan Wang ◽  
Jian-fu Li ◽  
...  

ACS Nano ◽  
2013 ◽  
Vol 8 (1) ◽  
pp. 362-373 ◽  
Author(s):  
Amalie Dualeh ◽  
Thomas Moehl ◽  
Nicolas Tétreault ◽  
Joël Teuscher ◽  
Peng Gao ◽  
...  

2011 ◽  
Vol 123 (27) ◽  
pp. 6208-6212 ◽  
Author(s):  
Yu Nakagawa ◽  
Yuichi Masuda ◽  
Keita Yamada ◽  
Takashi Doi ◽  
K. Takegoshi ◽  
...  

2007 ◽  
Vol 21 (11) ◽  
pp. 1875-1890 ◽  
Author(s):  
N. V. PRASAD ◽  
S. KARMAKAR ◽  
S. M. GUPTA

A and B site modified new bismuth layered structure ferroelectric ceramics of the Aurivillius family were prepared by the solid-state route. Impedance measurements were performed on these samples to understand the relaxation effects in the frequency range of 100 Hz to 1 MHz. From the detailed impedance and modulus spectroscopic analysis, it is found that the aliovalent modified B-site enhances the relaxor-like nature, compared to A-site substitution. These results were corroborated with ac-conductivity transport analysis. In this connection, a defect formula is also proposed. The results are discussed.


2018 ◽  
Vol 74 (8) ◽  
pp. 951-960 ◽  
Author(s):  
Chong Zhang ◽  
Kou-Lin Zhang

The bromo-substituted aromatic dicarboxylic acid 5-amino-2,4,6-tribromoisophthalic acid (H2ATBIP) was used to assemble with CdII ions in the presence of the N-donor flexible bipyridyl ligands 3,3′-(diazene-1,2-diyl)dipyridine (mzpy) and 1,3-bis(pyridin-3-ylmethyl)urea (3bpmu), leading to the formation of two chain coordination polymers by adopting solution methods, namely, catena-poly[[[triaqua(5-amino-2,4,6-tribromoisophthalato-κO)cadmium(II)]-μ-3,3′-(diazene-1,2-diyl)dipyridine-κ2 N 1:N 1′] dihydrate], {[Cd(C8H2Br3NO4)(C10H8N4)(H2O)3]·2H2O} n or {[Cd(ATBIP)(mzpy)(H2O)3]·2H2O} n , (1), and catena-poly[[[tetraaquacadmium(II)]-μ-1,3-bis(pyridin-3-ylmethyl)urea-κ2 N 1:N 1′-[diaquabis(5-amino-2,4,6-tribromoisophthalato-κO)cadmium(II)]-μ-1,3-bis(pyridin-3-ylmethyl)urea-κ2 N 1:N 1′] octahydrate], {[Cd(C8H2Br3NO4)(C12H12N4O)(H2O)3]·4H2O} n or {[Cd(ATBIP)(3bpmu)(H2O)3]·4H2O} n , (2). Both complexes were characterized by FT–IR spectroscopic analysis, thermogravimetric analysis (TGA), solid-state diffuse reflectance UV–Vis spectroscopic analysis, and single-crystal and powder X-ray diffraction analysis (PXRD). The mzpy and 3bpmu ligands bridge the CdII metal centres in (1) and (2) into one-dimensional chains, and the ATBIP2− ligands show a monodentate coordination to the CdII centres in both coordination polymers. A discrete water tetramer exists in (1). Within the chains of (1) and (2), there are halogen bonds between adjacent ATBIP2− and mzpy or 3bpmu ligands, as well as hydrogen bonds between the ATBIP2− ligands and the coordinated water molecules. With the aid of weak interactions, the structures of (1) and (2) are further extended into three-dimensional supramolecular networks. An analysis of the solid-state diffuse reflectance UV–Vis spectra of (1) and (2) indicates that a wide indirect band gap exists in both complexes. Complexes (1) and (2) exhibit irreversible and reversible dehydration–rehydration behaviours, respectively, and the solid-state fluorescence properties of both complexes have been studied.


2016 ◽  
Vol 120 (35) ◽  
pp. 6917-6928 ◽  
Author(s):  
Hiroki Tanaka ◽  
Nobuaki Nakashima ◽  
Tomoyuki Yatsuhashi

2017 ◽  
Vol 10 (1) ◽  
pp. 286-295 ◽  
Author(s):  
Hossein Yadegari ◽  
Mohammad Norouzi Banis ◽  
Andrew Lushington ◽  
Qian Sun ◽  
Ruying Li ◽  
...  

The role of solid state catalysts in Na– and Li–O2peroxide cells has been revealed through detailed electrochemical and spectroscopic analysis.


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