μ-Acetato-O:O′-bis{[bis(salicylidene)ethylenediaminato]manganese(III)} perchlorate

Abstract

In the title complex, [Mn(2)(C(16)H(14)N(2)O(2))(2)(C(2)H(3)O(2))]ClO(4), two [Mn(salen)] moieties [salen is bis(salicylidene)ethylenediamine] are connected through a micro-acetate bridge in a syn-anti fashion. The Mn.Mn distance is 5.365 (1) A.

Assembly of Mn(III) Schiff Base Complexes with Heptacyanorhenate (IV)

“…(Table S1). These short distances are non-negligibly shorter compared to those for the related complex [(Mn 2 (Salen) 2 OAc]ClO 4 [42]. According to the calculations [43], the π-π interactions with distances of 3.863 and 3.711 Å are present in 2 between the SB ligands coordinated to Mn1 and Mn2, respectively (Table S1).…”

“…The precursor [(Mn( 3MeO Salen)) 2 [20], as well as (n-Bu 4 N) 3 [Re(CN) 7 ] [42] were prepared using published procedures. Elemental (C, H, N) analyses were carried out by standard methods with a Euro-Vector 3000 analyzer (Eurovector, Redavalle, Italy).…”

Spin‐Canted Antiferromagnetic Phase Transitions in Alternating Phenoxo‐ and Carboxylato‐Bridged MnIII‐Salen Complexes

“…deviations of the four basal donor atoms from their mean planes around Mn(1) and Mn (2) The packing of the dimers in 2 to form a 1-dimensional polymer is also similar to that in 1, as shown in Figure 4 The packing of the dimers in the crystal structure of 3 is however somewhat different than in 1 and 2, as O (30) a is 2.493(2) Å from the vacant axial position on Mn(1) and O (50) b is 3.621(2) Å from Mn(2). In no way can this latter distance be considered even as a weak interaction, and therefore 3 is best considered to be a tetramer, as shown in A search of the CCDC database shows that only two compounds similar to those reported herein, [Mn 2 (salen) 2 -(CH 3 COO)]ClO 4 [16] and [Mn 2 (7-Me-salen) 2 (CH 3 COO)]-ClO 4 [17] are known. Both of these compounds are reported to be acetate-bridged dimers.…”

“…The association of the dimeric units via the phenoxo bridge of any of these complexes was not analyzed, although the deposited CIF associated with ref. [16] (for ref. [17] the atomic coordinates for the reported structures are not deposited) reveals that it is a 1D polymer like 1 and 2 with long Mn-O(ligand) distances, 2.453 and 2.686 Å, involving the vacant axial positions of the metal coordination sphere.…”

Two new mononuclear manganese(III) salen complexes

“…[18][19][20][21] The dinuclear structure of the coordination species has been observed in five compounds. [22][23][24][25][26] Acetate acts as a bridging ligand in four of them, while in one of the dimers phenolate oxygen of a substituted salen ligand serves as bridge between the two Mn(III) centers and the acetate is coordinated as a terminal ligand. Seven complexes possess mononuclear structure.…”