Crystal structures with infinite chains based on antimony tartrate dimers

Author(s):  
Xiqu Wang ◽  
Allan J. Jacobson

Abstract Seven complex metal antimony tartrates have been synthesized in single crystal form by slowly evaporating aqueous solutions of potassium antimony tartrate (tartar emetic) and divalent metal nitrates or perchlorates. Crystal structures of these compounds all contain infinite chains formed by linking antimony tartrate dimers with divalent metal ions. While infinite chains of antimony tartrate dimers bridged by single Zn2+ ions or by double Mg2+ ions were reported previously, new types of chains with alternating single and double bridging cations are observed in this work.

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Luisa E. Silva-De Hoyos ◽  
Victor Sánchez-Mendieta ◽  
Alfredo R. Vilchis-Nestor ◽  
Miguel A. Camacho-López ◽  
Jésica Trujillo-Reyes ◽  
...  

The chemical interaction between biogenic gold nanoparticles (AuNPs) and several metal (II) ions can be regarded as a practical, twofold, colorimetric, and plasmon resonance sensing method for the recognition of some divalent metal ions in aqueous solutions. The green synthesized AuNPs, using Camellia sinensis as a reducing agent, were characterized by a surface plasmon resonance (SPR) using UV-Vis spectroscopy, infrared spectroscopy, and transmission electron microscopy. The AuNP colloidal solutions obtained have a pink-reddish color with SPRs centered between 529 and 536 nm. AuNPs with spherical, triangular, and hexagonal shapes were found by TEM analyses. Despite their divergent morphologies, these AuNPs can be employed as colorimetric and plasmon resonance sensors for detection of Ca2+, Sr2+, Cu2+, and Zn2+, primarily, in aqueous solutions. Sensibility studies based on molar concentrations were also performed for these metal ions. Furthermore, solid biogenic AuNPs/cellulosic biocomposites were prepared with the aim of developing portable, fast, and dependable colorimetric sensors; nevertheless, these biocomposites resulted to be good adsorbent materials of metal ions.


2013 ◽  
Vol 42 (16) ◽  
pp. 5682 ◽  
Author(s):  
Rafal Sitko ◽  
Edyta Turek ◽  
Beata Zawisza ◽  
Ewa Malicka ◽  
Ewa Talik ◽  
...  

2014 ◽  
Vol 59 (5) ◽  
pp. 1661-1666 ◽  
Author(s):  
Shella Permatasari Santoso ◽  
Ivon Kusmijo Chandra ◽  
Felycia Edi Soetaredjo ◽  
Artik Elisa Angkawijaya ◽  
Yi-Hsu Ju

2010 ◽  
Vol 75 (1) ◽  
pp. 149-155 ◽  
Author(s):  
Mubeena Akhtar ◽  
Shahid Iqbal ◽  
Abida Kausar ◽  
M.I. Bhanger ◽  
Muhammad Ashraf Shaheen

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