Abstract
Ferrocenophane-containing (Fcph) Schiff's bases p-C12H 25O-(C6H4)CH=N(C6H4)Fcph (LAH) and p-C12H25O(C6H 4)COO-(C6H4)CH=N(C6H 4)Fcph (LBH) react with palladium(II) acetate to form μ-acetato- and chloro-bridged dimeric organo-palladium complexes. By exchanging acetato-groups with the chloride anions, μ-chloro-bridged heteropolynuclear dimers are obtained that show thermotropic smectic A phases over a temperature range of 198 to 260°C. The complexes [PdClL A]2 and [PdClLB]2 can be transformed into a variety of mixed-ligand PdII complexes by treatment with salicyl-aldimine p-C12H25O(C6H 4)COO(C6H3)(OH)CH=N(C6H 4)-Fcph (LCH) and β-aminovinyl ketone p-C 12H25O(C6H4)-COCH=CHNH(C 6H4)Fcph (LDH). The obtained mixed-ligand heterometallic complexes [PdLALC], [PdLBLC], [PdLALD] and [PdLBLD] exhibit enantiotropic, thermotropic nematic phases over a broad temperature range from 71 to 205°C. The structures of the synthesized compounds were characterized by means of 1H NMR, IR and UV spectroscopy, as well as elemental analysis. The liquid crystalline properties were studied by polarising optical microscopy and DSC.
| Original language | English |
|---|---|
| Pages (from-to) | 1682-1688 |
| Number of pages | 7 |
| Journal | European Journal of Inorganic Chemistry |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2008 Apr 1 |
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All Science Journal Classification (ASJC) codes
- Inorganic Chemistry
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A novel series of heteropolynuclear metallomesogens : Organopalladium complexes with ferrocenophane-containing ligands. / Kadkin, Oleg N.; An, Jaein; Han, Haksoo; Galyametdinov, Yuri G.
In: European Journal of Inorganic Chemistry, No. 10, 01.04.2008, p. 1682-1688.Research output: Contribution to journal › Article
TY - JOUR
T1 - A novel series of heteropolynuclear metallomesogens
T2 - Organopalladium complexes with ferrocenophane-containing ligands
AU - Kadkin, Oleg N.
AU - An, Jaein
AU - Han, Haksoo
AU - Galyametdinov, Yuri G.
PY - 2008/4/1
Y1 - 2008/4/1
N2 - Ferrocenophane-containing (Fcph) Schiff's bases p-C12H 25O-(C6H4)CH=N(C6H4)Fcph (LAH) and p-C12H25O(C6H 4)COO-(C6H4)CH=N(C6H 4)Fcph (LBH) react with palladium(II) acetate to form μ-acetato- and chloro-bridged dimeric organo-palladium complexes. By exchanging acetato-groups with the chloride anions, μ-chloro-bridged heteropolynuclear dimers are obtained that show thermotropic smectic A phases over a temperature range of 198 to 260°C. The complexes [PdClL A]2 and [PdClLB]2 can be transformed into a variety of mixed-ligand PdII complexes by treatment with salicyl-aldimine p-C12H25O(C6H 4)COO(C6H3)(OH)CH=N(C6H 4)-Fcph (LCH) and β-aminovinyl ketone p-C 12H25O(C6H4)-COCH=CHNH(C 6H4)Fcph (LDH). The obtained mixed-ligand heterometallic complexes [PdLALC], [PdLBLC], [PdLALD] and [PdLBLD] exhibit enantiotropic, thermotropic nematic phases over a broad temperature range from 71 to 205°C. The structures of the synthesized compounds were characterized by means of 1H NMR, IR and UV spectroscopy, as well as elemental analysis. The liquid crystalline properties were studied by polarising optical microscopy and DSC.
AB - Ferrocenophane-containing (Fcph) Schiff's bases p-C12H 25O-(C6H4)CH=N(C6H4)Fcph (LAH) and p-C12H25O(C6H 4)COO-(C6H4)CH=N(C6H 4)Fcph (LBH) react with palladium(II) acetate to form μ-acetato- and chloro-bridged dimeric organo-palladium complexes. By exchanging acetato-groups with the chloride anions, μ-chloro-bridged heteropolynuclear dimers are obtained that show thermotropic smectic A phases over a temperature range of 198 to 260°C. The complexes [PdClL A]2 and [PdClLB]2 can be transformed into a variety of mixed-ligand PdII complexes by treatment with salicyl-aldimine p-C12H25O(C6H 4)COO(C6H3)(OH)CH=N(C6H 4)-Fcph (LCH) and β-aminovinyl ketone p-C 12H25O(C6H4)-COCH=CHNH(C 6H4)Fcph (LDH). The obtained mixed-ligand heterometallic complexes [PdLALC], [PdLBLC], [PdLALD] and [PdLBLD] exhibit enantiotropic, thermotropic nematic phases over a broad temperature range from 71 to 205°C. The structures of the synthesized compounds were characterized by means of 1H NMR, IR and UV spectroscopy, as well as elemental analysis. The liquid crystalline properties were studied by polarising optical microscopy and DSC.
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U2 - 10.1002/ejic.200700750
DO - 10.1002/ejic.200700750
M3 - Article
AN - SCOPUS:53349165995
SP - 1682
EP - 1688
JO - Chemische Berichte
JF - Chemische Berichte
SN - 0009-2940
IS - 10
ER -