%0 Generic
%A Przychodzeń, Paweł
%A Lewiński, Krzysztof
%A Bałanda, Maria
%A Pełka, Robert
%A Rams, Michał
%A Wasiutyński, Tadeusz
%A Guyard-Duhayon, Carine
%A Sieklucka, Barbara
%D 2004
%T Crystal Structures and Magnetic Properties of Two Low-Dimensional
Materials Constructed from [MnIII(salen)H2O]+ and [M(CN)8]3-/4-
(M = Mo or W) Precursors
%U https://acs.figshare.com/articles/dataset/Crystal_Structures_and_Magnetic_Properties_of_Two_Low_Dimensional_Materials_Constructed_from_Mn_sup_III_sup_salen_H_sub_2_sub_O_sup_sup_and_M_CN_sub_8_sub_sup_3_4_sup_M_Mo_or_W_Precursors/3340930
%R 10.1021/ic035464n.s001
%2 https://acs.figshare.com/ndownloader/files/5180143
%K W V
%K unit cell constants
%K OH
%K antiferromagnetic intramolecular interactions
%K cyano bridges
%K unit cell dimensions
%K antiferromagnetic ground state
%K Mn III
%K CN
%K phenolate bridges
%K Mn 3 III Mo IV
%K S T
%K Compound 1 crystallizes
%X The syntheses, X-ray structures, and magnetic behaviors of two new cyano-bridged assemblies, the molecular
[MnIII(salen)H2O]3[WV(CN)8]·H2O (1) and one-dimensional [Mn(salen)(H2O)2]2{[Mn(salen)(H2O)][Mn(salen)]2[Mo(CN)8]}·0.5ClO4·0.5OH·4.5H2O (2), are presented. Compound 1 crystallizes in the monoclinic system, has space group
P21/c, and has unit cell constants a = 13.7210(2) Å, b = 20.6840(4) Å, c = 20.6370(2) Å, and Z = 4. Compound
2 crystallizes in the triclinic system, has space group P1̄, and has unit cell dimensions a = 18.428(4) Å, b =
18.521(3) Å, c = 18.567(4) Å, and Z = 2. The structure of 1 consists of the asymmetric V-shaped Mn−NC−W−NC−Mn−Ophenolate−Mn molecules, where W(V) coordinates with [Mn(salen)H2O] and singly phenolate-bridged [Mn(salen)H2O]2 moieties through the neighboring cyano bridges. The [WV(CN)8]3- ion displays distorted square-antiprism geometry. The structure of 2 consists of the cyano-bridged {Mn3IIIMoIV}n- repeating units linked by double
phenolate bridges into one-dimensional zigzag chains. The Mn(III) centers are bound to Mo(IV) of square-antiprism
geometry through the neighboring cyano bridges. The magnetic studies of 1 reveal the antiferromagnetic intramolecular
interactions through the CN and phenolate bridges and the relatively weak intermolecular interactions. Compound
1 becomes antiferromagnetically ordered below TN = 4.6 K. The presence of the magnetic anisotropy is documented
with the M(H) measurements carried out for both polycrystalline and single-crystal samples. At T = 1.9 K, the
spin−flop transition is observed in the field of 18 kOe applied parallel to the bc plane, which is the easy plane of
magnetization. Field dependence of magnetization of 1 shows field-induced metamagnetic behavior from the
antiferromagnetic ground state of ST = 3/2 to the state of ST = 5/2. The magnetic properties of 2 indicate a weak
antiferromagnetic interaction between Mn(III) centers in double-phenolate-bridged [MnIII(salen)]2 dinuclear subunits
and a very weak ferromagnetic interaction between them through the diamagnetic [MoIV(CN)8]4- spacer.
%I ACS Publications