Linkage isomerism in the metal complex hexa(thiocyanato)rhenate(IV): Synthesis and crystal structure of (NBu4)2[Re(NCS)6] and [Zn(NO3)(Me2phen)2]2[Re(NCS)5(SCN)]

Novel rhenium(iii, iv, and v) tetradentate N2O2 Schiff base mononuclear and dinuclear complexes

“…33, 34, 62 As in 4 , the thiocyanate ligands are near linear with N–C–S bond angles of 175.79°, the Re–NCS bond length (2.151 Å) is slightly longer than typically observed, and the Re–NCS bond angle (Re–N–C) deviates from linear (163.64°). 22, 56, 63, 64 The two sal 2 ibn ligands are positioned with the backbone methyl groups on opposite sides as in 2 . The planes of the ligands are on average 3.8 Å apart and are canted up or down on either side of the Re–O–Re bond.…”

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

“…)[149,150], (iv) mixed cyano-and halogeno-rhenates(IV) such as (Bu 4 N)2 [trans-ReCl 4 (CN) 2 ] (85), and (v) hexapseudohalorhenates(IV) such as K 2 [Re(NCS) 6 ] (86)[157], and [Zn(NO 3 )(Me 2 phen) 2 ] 2 [Re(NCS) 5 (SCN)] (87)[158,159].…”

Diammonium hexakis(thiocyanato-κN)rhenate(IV) dimethyl sulfone tetrasolvate

“…Rhenium thiocyanate complexes possess catalytic activity, which makes them an alternative to the expensive catalyst methyltrioxidorhenium (MTO) (Dinda et al, 2009). Synthetic routes for the synthesis of such catalysts are still being explored, in particular through reductive thiocyanolysis (Dinda et al, 2009) or ligand exchange in hexachloridorhenates(IV) (Gonzalez et al, 2008). Synthetic difficulties arise in connection with product purification.…”

“…1). To date, only a modest amount of crystal data has been reported for this anion, namely for a tetraphenylphosphonium salt (Dinda et al, 2009), and for a tetrabutylammonium salt along with its linkage isomer (Gonzalez et al, 2008). In both these cases, the anions are also centrosymmetric.…”