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Two 3D Supramolecular Polymers Constructed from an Amino Acid and a High‐Nuclear Ln 6 Cu 24 Cluster Node
Author(s) -
Zhang JianJun,
Sheng TianLu,
Hu ShengMin,
Xia ShengQing,
Leibeling Guido,
Meyer Franc,
Fu ZhiYong,
Chen Ling,
Fu RuiBiao,
Wu XinTao
Publication year - 2004
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200400018
Subject(s) - triclinic crystal system , crystallography , supramolecular chemistry , cluster (spacecraft) , polymer , octahedron , materials science , chemistry , crystal structure , stereochemistry , computer science , programming language , composite material
Abstract The first successful attempt to construct 3D supramolecular frameworks with high‐nuclear 3d–4f heterometallic clusters as a node is reported. The self‐assembly of Ln 3+ , Cu 2+ and amino acid in solution leads to the formation of two polymers, 35‐nuclear complex {Sm 6 Cu 29 } 1 with a primitive cubic net‐like structure and 36‐nuclear complex {Nd 6 Cu 30 } 2 with a face‐centred cubic network type structure. Glycine and L ‐proline, respectively, were used as ligands. It should be noted that 2 has a chiral framework. X‐ray structure analyses show that 1 crystallizes in the triclinic P $\bar 1$ space group ( a= 19.6451(8), b =20.4682(8), c =20.7046(8) Å, α =89.453(1), β =66.290(1), γ =68.572(1)°, V =7003.0(5) Å 3 and Z =1) and 2 belongs to the cubic P 2(1)3 space group ( a=b=c =32.4341(3) Å, V =34 119.7(5) Å 3 and Z =4). Both complexes utilize Ln 6 Cu 24 octahedral clusters as nodes and trans ‐Cu(amino acid) 2 groups as bridges. Electrical conductivity measurements reveal that both polymers behave as semiconductors.