Synthesis, structural and magnetochemical studies of iron phosphonate cages based on {Fe3O}7+ core.
We report the synthesis, structures, and magnetic properties of twelve iron(III) phosphonate cages: [Fe(4)(mu(3)-O)Cl(PhCO(2))(3)(PhPO(3))(3)(py)(5)] 1, [Fe(4)(mu(3)-O)((t)BuCO(2))(4)(C(10)H(17)PO(3))(3)(py)(4)] 2 (C(10)H(17)PO(3)H(2) = camphylphosphonic acid), [Fe(7)(mu(3)-O)(2)(PhPO(3))(4)(MeCO(2))(9)(py)(6)] 3, [Fe(7)(mu(3)-O)(2)(PhPO(3))(4)(PhCO(2))(9)(py)(6)] 4, [Fe(7)(mu(3)-O)(2)((t)BuPO(3))(4)((t)BuCO(2))(8)(py)(8)](NO(3)) 5, [Fe(7)(mu(3)-O)(2)(PhPO(3))(4)(MeCO(2))(8)(py)(8)] 6, [Fe(9)(mu(3)-O)(2)(mu(2)-OH)(PhPO(3))(6)((t)BuCO(2))(10)(MeCN)(H(2)O)(5)] 7, [Fe(9)(mu(3)-O)(2)(mu(2)-OH)(C(10)H(17)PO(3))(6)(PhCO(2))(10)(H(2)O)(6)] 8, [Fe(6)(mu(3)-O)(2)(O(2))((t)BuCO(2))(8)(PhPO(3))(2)(H(2)O)(2)] 9, [Fe(6)(mu(3)-O)(2)(O(2))((t)BuCO(2))(8)(C(10)H(17)PO(3))(2)(H(2)O)(2)] 10, [Fe(6)(mu(3)-O)(2)(O(2))((t)BuCO(2))(8)((t)BuPO(3))(2)(py)(2)] 11, and [Fe(14)(mu(3)-O)(4)(O(2))(2)(PhPO(3))(8)((t)BuCO(2))(12)(H(2)O)(12)](NO(3))(2) 12. The results have allowed us to compare the magnetic exchange found with magneto-structural correlations found previously for iron-oxo cages.
Khanra
Sumit
S
School of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
Konar
Sanjit
S
Clearfield
Abraham
A
Helliwell
Madeleine
M
McInnes
Eric J L
EJ
Tolis
Evangelos
E
Tuna
Floriana
F
Winpenny
Richard E P
RE