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Two Cd II /Co II ‐Imidazolate Coordination Polymers: Syntheses, Crystal Structures, Stabilities, and Luminescent/Magnetic Properties
Author(s) -
Mondal Suvendu Sekhar,
Behrens Karsten,
Kelling Alexandra,
Nabein HansPeter,
Schilde Uwe,
Holdt HansJürgen
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201500526
Subject(s) - powder diffraction , crystallography , thermogravimetric analysis , luminescence , thermal stability , crystal structure , materials science , solvothermal synthesis , coordination polymer , cobalt , chemistry , inorganic chemistry , organic chemistry , optoelectronics
Cadmium(II) based 2D coordination polymer [Cd(L1) 2 (DMF) 2 ] ( 1 ) (L1 = 4,5‐dicyano‐2‐methylimidazolate, DMF = N,N ′‐dimethylformamide) and 2D cobalt(II)‐imidazolate framework [Co(L3) 4 ] ( 2 ) (L3 = 4,5‐diamide‐2‐ethoxyimidazolate) were synthesized under solvothermal reaction conditions. The materials were characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, powder X‐ray diffraction measurement (PXRD) and single‐crystal X‐ray diffraction. Compound 1 has hexacoordinate Cd II ions and forms a zigzag chain‐like coordination polymer structure, whereas compound 2 exhibits a 2D square grid type structure. The thermal stability analysis reveals that 2 showed an exceptional thermal stability up to 360 °C. Also, 2 maintained its fully crystalline integrity in boiling water as confirmed by PXRD. The solid state luminescent property of 1 was not observed at room temperature. Compound 2 showed an independent high spin central Co II atom.
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