These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Two novel silver(I) coordination polymers: poly[(mu2-2-aminopyrimidine-kappa2N1:N3)bis(mu3-thiocyanato-kappa3S:S:S)disilver(I)] and poly[(2-amino-4,6-dimethylpyrimidine-kappaN)(mu3-thiocyanato-kappa3N:S:S)silver(I)].
    Author: Luo GG, Sun D, Zhang N, Huang RB, Zheng LS.
    Journal: Acta Crystallogr C; 2009 Oct; 65(Pt 10):m377-81. PubMed ID: 19805869.
    Abstract:
    2-Aminopyrimidine (L1) and 2-amino-4,6-dimethylpyrimidine (L2) have been used to create the two novel title complexes, [Ag2(NCS)2(C4H5N3)]n, (I), and [Ag(NCS)(C6H9N3)]n, (II). The structures of complexes (I) and (II) are mainly directed by the steric properties of the ligands. In (I), the L1 ligand is bisected by a twofold rotation axis running through the amine N atom and opposite C atoms of the pyrimidine ring. The thiocyanate anion adopts the rare mu3-kappa3S coordination mode to link three tetrahedrally coordinated Ag(I) ions into a two-dimensional honeycomb-like 6(3) net. The L1 ligands further extend the two-dimensional sheet to form a three-dimensional framework by bridging Ag(I) ions in adjacent layers. In (II), with three formula units in the asymmetric unit, the L2 ligand bonds to a single Ag(I) ion in a monodentate fashion, while the thiocyanate anions adopt a mu3-kappa1N,kappa2S coordination mode to link the AgL2 subunits to form two-dimensional sheets. These layers are linked by N-H...N hydrogen bonds between the noncoordinated amino H atoms and both thiocyanate and pyrimidine N atoms.
    [Abstract] [Full Text] [Related] [New Search]