Synthesis and characterization of manganese complexes containing a synthetic macrocyclic ligand

Abstract

Sect. B, 30, 2234Sect. B, 30, (1974] and [Ni(CsH5NO)6](BF4)2 [A. D, van Ingen Schenau, G. C. Verschoor, and C. Romers, ibid., 30, 1686 (1974)] have been reported.

Manganese–Chromium–Cyanide Clusters: Molecular MnCr6(CN)18 and Mn3Cr6(CN)18 Species and a Related MnCr3(CN)9 Chain Compound

“…] and Mn(CF SO ) ) MeCN were synthesized as described previously (31,45). Water was distilled and deionized with a Milli-Q "ltering system.…”

3d Metal Complexes Supported by a Bis(imidazolin‐2‐imino)pyridine Pincer Ligand – Synthesis, Structural Characterisation, and Magnetic Properties

“…The brickred and air-stable 4 was isolated in good yield, and single crystals of its chloroform trisolvate were obtained by slow diffusion of n-hexane into a concentrated CHCl 3 solution. of [Mn(OTf) 2 ]·MeCN [34] in THF or CH 2 Cl 2 (Scheme 3). In addition, one singlet at δ = 4.57 ppm was observed for the two bridging methylene groups together with a triplet at δ = 7.83 ppm and a doublet at δ = 7.22 ppm for the aromatic pyridine ring.…”

Facile routes to manganese(II) triflate complexes

“…[1-3] Metal triflates have been touted as a means to avoid the explosive hazards associated with metal perchlorates,[4, 5] and a wide variety of transition metal triflates have now been reported. [3] In spite of several detailed reports, the acetonitrile complex of manganese(II) triflate has been reported with a variety of constitutions: [Mn(CH 3 CN) 4 ](OTf) 2 ,[6] Mn(OTf) 2 ·2CH 3 CN,[7] Mn(OTf) 2 ·1CH 3 CN,[8] and Mn(OTf) 2 . [3, 9, 10] In each of these preparations of manganese triflate complexes, the characterization data provided are insufficient to ascertain the exact constitution.…”

“…[3, 9, 10] In each of these preparations of manganese triflate complexes, the characterization data provided are insufficient to ascertain the exact constitution. Furthermore, the most frequently cited reference for the preparation of Mn(OTf) 2 ·1CH 3 CN admits to inconsistent combustion analyses,[8] and most preparations do not report the characteristic triflate vibrational modes. [11] In this communication, we report easily reproducible methods for the preparation[12] and crystallization[13] of three manganese(II) triflate complexes of known constitution.…”

“…Vibrational data were not reported in the other acetonitrile complexes of manganese triflate. [3, 7, 8] Therefore on the basis of nitrile-ligated high-spin manganese(II) spectra,[29, 30] we assign the two features at 2310 and 2281 cm -1 to modes of the bound acetonitriles. On the basis of the vibrational features of other metal triflate complexes,[1, 11] we assign the bands at 1312 and 1039 cm -1 to the asymmetric and symmetric vibration of the SO 3 fragment respectively and the 1188 cm -1 band to the symmetric CF 3 vibrational mode.…”