An iron(III)-centred ferric wheel Fe subset of{Fe-6} with a siloxane-based bis-salicylidene Schiff base

作者：Shova Sergiu^*; Cazacu Maria; Novitchi Ghenadie; Zoppellaro Giorgio; Train Cyrille; Arion Vladimir B^*

来源：Dalton Transactions, 2017, 46(6): 1789-1793.

DOI：10.1039/c7dt00141j

A new iron(III)-centred ferric wheel Fe.{Fe-6} of the formula [Fe-7(H2L)(6)(NCS)(6)](ClO4)(3).10H(2)O, where H4L = N, N'-bis(3-carboxylsalicylidene)- 1,3-bis(3-aminopropyl)tetramethyldisiloxane, was synthesised and fully characterised. Fe-57 Mossbauer spectra indicate the presence of high spin (S = 5/ 2) Fe3+ cations adopting a slightly different coordination environment in agreement with the X-ray diffraction structure. There are competing antiferromagnetic exchange interactions along the rim (J(1) = - 1.00 cm(-1)) and the radius (J2 = - 1.46 cm(-1)) of the wheel.

• 出版日期2017-2-14