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przez ScienceDirect Publication: Tetrahedron dnia 10-07-20
Publication year: 2010Source: Tetrahedron, Volume 66, Issue 32, 7 August 2010, Pages 6101-6112
Sih-Yeh, Li , Chun-Jung, Chen , Po-Yuan, Lo , Hwo-Shuenn, Sheu , Gene-Hsiang, Lee , ...
A series of new mesogenic compounds 1a–b (n=8, 10, 12, 14, 16) derived from salicyladimines and their palladium 2a, 2b, vanadyl 2a, and copper complexes 3a, 3b were prepared and their mesomorphic properties investigated by optical microscopy, differential scanning calorimetry and powder X-ray diffractometry. Pd2+ and VO2+ ions formed mononuclear complexes, whereas, Cu2+ion formed binuclear complexes due to the relative acidic strength of Schiff base. Single crystallographic analysis of non-mesogenic compound 2a (n=8) confirmed its coordination geometry at Pd2+ as square plane. It crystallizes in a triclinic space group P−1 with a Z=1. As expected, the Pd2+ was coordinated via...
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