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Title: The C-F...F-C short contacts in the metal complexes of fluoro-phenyl-acrylic acids

Journal Article · · Journal of Solid State Chemistry
OSTI ID:21504051
 [1];  [2]
  1. Key Laboratory of Cluster Science of Ministry of Education, Department of Chemistry, School of Science, Beijing Institute of Technology, Beijing 100081 (China)
  2. Institute of Chemistry, Chinese Academy of Science, Beijing 100190 (China)

Four new complexes of fluoro-phenyl-acrylic acids (E)-3-(3-fluoro-phenyl)-acrylic acid (L1) [Mn{sub 3}(L1){sub 6}(L2){sub 2}].H{sub 2}O.CH{sub 3}CN (1), [Zn{sub 2}(L1){sub 4}(L3)]{sub n} (2), [Mn(L1){sub 2}(H{sub 2}O){sub 2}]{sub n} (3) and [Co(L1){sub 2}(H{sub 2}O){sub 2}]{sub n} (4) (L2=1,10-phenanthroline, L3=4,4'-bipy) have been synthesized based on the molecular design and research of halogen-halogen interactions (especially fluoro-fluoro contact). The structure analyses reveal that complex 1 is a trinuclear complex, which is blocked by L2. Complex 2 is a 1D chain bridged through L3. Complexes 3 and 4 exhibit 2D grid like metal-organic framework structures through carboxylato bridge ligand. Variable-temperature magnetic measurements showed an antiferromagnetic interaction between Mn(II) ions and between Co(II) ions in complexes 3 and 4, respectively. A short C-F...F-C contact with a distance of 2.953 A was found between the trinuclear coordination compound 1. -- Graphical Abstract: The short distance between F...F (2.953 A) was found in the complex of [Mn{sub 3}(L1){sub 6}(L2){sub 2}].H{sub 2}O.CH{sub 3}CN (L1=(E)-3-(3-fluoro-phenyl)-acrylic acid, L2=1,-10-phenanthroline). Display Omitted Research highlights: > Four new complexes of fluoro-phenyl-acrylic acids (E)-3-(3-fluoro-phenyl)-acrylic acid (L1) [Mn{sub 3}(L1){sub 6}(L2){sub 2}].H{sub 2}O.CH{sub 3}CN (1), [Zn{sub 2}(L1){sub 4}(L3)]{sub n} (2), [Mn(L1){sub 2}(H{sub 2}O){sub 2}]{sub n} (3) and [Co(L1){sub 2}(H{sub 2}O){sub 2}]{sub n} (4) (L2=1,10-phenanthroline, L3=4,4'-bipy) have been synthesized based on the molecular design and research of halogen-halogen interactions (especially fluoro-fluoro contact). > A short C-F...F-C contact with a distance of 2.953 A was found between the trinuclear coordination compound 1. > Variable-temperature magnetic measurements showed an antiferromagnetic interaction between Mn(II) ions and between Co(II) ions in complexes 3 and 4, respectively.

OSTI ID:
21504051
Journal Information:
Journal of Solid State Chemistry, Vol. 184, Issue 3; Other Information: DOI: 10.1016/j.jssc.2010.12.022; PII: S0022-4596(10)00568-2; Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
Country of Publication:
United States
Language:
English