TY - JOUR
T1 - Linear, Divergent Molecular Receptors - Subtle Effects of Transition Metal Coordination Geometry
AU - Bilyk, A.
AU - Hall, A.K.
AU - Harrowfield, J.M.
AU - Hosseini, M.W.
AU - Mislin, G.
AU - Skelton, Brian
AU - Taylor, C.
AU - White, Allan
PY - 2000
Y1 - 2000
N2 - Reaction between deprotonated p-tert-butyltetrathiacalix[4]arene and Co-II or Zn-II under strictly defined conditions leads to the formation of sandwich species in which a trimetallic unit is held between two opposed, divergently oriented, staggered O- and S-bound calixarene ligands in the cone conformation. Despite the isomorphous nature of the crystalline compounds, there is a subtle difference in the coordination of Co-II and Zn-II, presumably related to the differences in metal radius and electron configuration combined with structural restrictions imposed by the calixarene framework, in that whereas all three Co atoms may be considered six-coordinate (and approximately octahedral), only two of the Zn atoms appear so, the third being five-coordinate and more nearly trigonal bipyramidal in its coordination geometry.
AB - Reaction between deprotonated p-tert-butyltetrathiacalix[4]arene and Co-II or Zn-II under strictly defined conditions leads to the formation of sandwich species in which a trimetallic unit is held between two opposed, divergently oriented, staggered O- and S-bound calixarene ligands in the cone conformation. Despite the isomorphous nature of the crystalline compounds, there is a subtle difference in the coordination of Co-II and Zn-II, presumably related to the differences in metal radius and electron configuration combined with structural restrictions imposed by the calixarene framework, in that whereas all three Co atoms may be considered six-coordinate (and approximately octahedral), only two of the Zn atoms appear so, the third being five-coordinate and more nearly trigonal bipyramidal in its coordination geometry.
M3 - Article
SN - 1434-1948
VL - N/A
SP - 823
EP - 826
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 2000
ER -