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The Syntheses, Crystal Structure, and Exceptional Chemical Stability of Three Multinuclear Pb II Complexes
Author(s) -
Jia Yanyuan,
Li Huijun,
Zhao Bei,
Guo Qianqian,
Hou Hongwei,
Fan Yaoting
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201201092
Subject(s) - chemistry , thermogravimetric analysis , thermal stability , pyrazine , chemical stability , hydrothermal circulation , alkali metal , metal , crystal structure , crystallography , boiling , inorganic chemistry , nuclear chemistry , stereochemistry , organic chemistry , chemical engineering , engineering
Three multinuclear Pb II complexes―[Pb 2 (ptptp) 2 (H 2 O) 2 ] ( 1 ), [Pb 2 ( p ‐PDA)(Hptptp) 2 ] ( 2 ), and [Pb 4 ( o ‐PDA) 2 (ptptp) 2 ] · 2H 2 O ( 3 ) [H 2 ptptp = 2‐(5‐{6‐[5‐(pyrazin‐2‐yl)‐1 H ‐1,2,4‐triazol‐3‐yl]pyridin‐2‐yl}‐1 H ‐1,2,4‐triazol‐3‐yl)pyrazine, H 2 PDA = phenylenediacetic acid]―have been synthesized under hydrothermal conditions. Complexes 1 , 2 , and 3 show di‐, di‐, and tetranuclear structures, respectively. The study of the chemical stability of the three complexes demonstrates their remarkable chemical resistance to boiling water and organic solvents. More importantly, complex 1 shows remarkable acid and alkali resistance, which is outstanding among metal–organic solids. The thermogravimetric analysis curve shows that complex 1 possesses high thermal stability (up to 491 °C). Furthermore, the fluorescence of complexes 1 , 2 , and 3 has also been investigated.