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Inorganic−Organic Hybrid Polymers via Hydrothermal Syntheses: Tetraaquahexakis(pyrazine‐2‐carboxylato)pentacopper(4+) Hexacosaoxooctamolybdate(4−) Polymer ({[Cu 5 (pzca) 6 (H 2 O) 4 ][Mo 8 O 26 ]} n ; pzca=Pyrazine‐2‐carboxylate) and Dicopperdecaoxo(pyrazine)trimolybdenum Polymer ([Mo 3 Cu 2 O 10 (pz)] n ; pz=pyrazine)
Author(s) -
Liang Yucang,
Hong Maochun,
Su Weiping,
Cao Rong,
Chen Jiutong
Publication year - 2001
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/1522-2675(20011114)84:11<3393::aid-hlca3393>3.0.co;2-4
Subject(s) - pyrazine , chemistry , monoclinic crystal system , orthorhombic crystal system , crystallography , carboxylate , hydrothermal circulation , zigzag , bridging ligand , crystal structure , stereochemistry , chemical engineering , mathematics , engineering , geometry
Hydrothermal reactions of MoO 3 , CuO, and pyrazine‐2‐carboxylic acid (Hpzca) resulted in two polymeric complexes, {[Cu 5 (pzca) 6 (H 2 O) 4 ][Mo 8 O 26 ]} n ( 1 ; pzca=pyrazine‐2‐carboxylate) and [Mo 3 Cu 2 O 10 (pz)] n ( 2 ; pz=pyrazine). The former crystallized in the monoclinic space group P 2 1 / c with a =10.805(3) Å, b =13.061(5) Å, c =13.337(10) Å, β =90.20(4)°, V =2729(2) Å 3 , and Z =2. The later crystallized in the orthorhombic space group Pnma with a =12.385(2) Å, b =7.6044(9) Å, c =12.7880(14) Å, V =1204.4(2) Å 3 , and Z =4. X‐Ray diffraction analysis revealed that 1 possesses a two‐dimensional wave‐like structure, formed from a zigzag one‐dimensional chain, and 2 is a three‐dimensional network structure formed from a one‐dimensional chain and a pz bridging ligand. The temperature‐dependent magnetic behavior of 1 was studied.