A novel tricyanoruthenium(iii) building block for the construction of bimetallic coordination polymers

Abstract

Reaction of excess cyanide with a ruthenium(VI) nitrido complex bearing a tridentate Schiff base ligand produces a novel tricyanoruthenium(III) complex in which nucleophilic substitution of an imine hydrogen of the Schiff base by cyanide has occurred, this complex is a useful building block for the construction of 3d-Ru(III) magnetic materials.

Magnetic anisotropy in two- to eight-coordinated transition–metal complexes: Recent developments in molecular magnetism

“…All of these Re II complexes are anisotropic, where g ┴ ranges between 2.30 and 2.34, while g ǁ is in the range of 0.90-1.45, and they are efficient building units for constructing molecule-based magnets [112,178,180,181]. The isoelectronic, isogeometric Ru III and heavier Os III congeners are also capable of providing strongly anisotropic magnetic exchange coupling with other paramagnetic centers [138,183,184,194,196]. An X-band EPR experiment using a polycrystalline material made of the complex (Ph 4 P)[Os III (CN) 6 ]•6H 2 O determined anisotropic g-factors of g ┴ = 1.79 and g ǁ = 1.21 [195].…”

“…Examples of low-spin d 5 complexes that exhibit considerable magnetic anisotropy mainly comprise Re II [112,[177][178][179][180][181][182], Ru III [138,[183][184][185][186][187][188][189], and Os III [114,138,[190][191][192][193][194][195]. The magnitude of  for free Re II ranges between 300 and 2000 cm -1 .…”

Reaction of an Osmium(VI) Nitrido Complex with Cyanide: Formation and Reactivity of an Osmium(III) Hydrogen Cyanamide Complex

“…[20] The IR spectra (KBr) show three ñA C H T U N G T R E N N U N G (CN) stretching bands at 2136, 2152, and 2227 cm À1 in 3 and 2139, 2152, and 2229 cm À , respectively. The molecular structures of the anion of 3 and 3* are shown in Figure S5 in the Supporting Information and Figure 2, respectively.…”

New tricyanoiron(III) building blocks for the construction of molecule-based magnets

“…Another cyanometallate, mer-[Fe III (qcq)(CN) 3 ]  (qcq = 8-(2-quinolinecarboxamido)quinoline anion) [15] has also been reported to react with manganese salen-type complexes to produce a number of cyanidelinked Fe III -Mn III dimers with antiferromagnetic interactions [17]. We have been interested in designing new building blocks such as trans-[Ru III (acac)(CN) 2 ]  [18][19][20][21], trans-[M III (salen)(CN) 2 ]  (M = Ru or Os) [19,22] and [Ru III (CN-sap)(CN) 3 ] 2 [23]. In this paper, we report the synthesis of a series of tricyanoiron(III) complexes bearing the tridentate Schiff base ligand sap and its 5- …”