forthcoming articles

The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section C: Structural Chemistry.

See also Forthcoming articles in all IUCr journals.

Accepted 26 May 2016

Diminished electron density in the Vaska-type rhodium(I) complex trans-[Rh(NCBH3)(CO)(PPh3)2]

The synthesis, IR and NMR spectroscopic data, and single-crystal X-ray diffraction analysis of trans-[Rh(NCBH3)(CO)(PPh3)2] are reported. The cyano­trihydridoborate ligand coordinates to the RhI atom through the N atom in a trans position with respect to the carbonyl ligand. The IR data indicate a diminished electron density on the central RhI atom.

Accepted 22 April 2016

Nitrile coordination to rhodium does not lead to C—H activation

Tris(pyrazol­yl)borate complexes of rhodium are well known to activate C—H bonds. The reactive [Tp′Rh(PMe3)] fragment [Tp′ is tris­(3,5-di­methyl­pyrazol-1-yl)hydro­borate] is found to react with valero­nitrile to give a κ1N-bound complex. In contrast to the widespread evidence for the reaction of this fragment with C—H bonds via oxidative addition, no evidence for such a complex is observed.

Accepted 20 April 2016

The silver(I) complex [HB{3-(CF3),5-(CH3)Pz}3]AgNCCH3 supported by a partially fluorinated scorpionate ligand

The silver(I) adduct [HB{3-(CF3),5-(CH3)Pz}3]AgNCCH3 was obtained by treating [HB{3-(CF3),5-(CH3)Pz}3]Na with CF3SO3Ag in the presence of aceto­nitrile, and was isolated in 85% yield. Single-crystal X-ray diffraction analysis reveals that the AgI center has a pseudo-tetra­hedral all-nitro­gen coordination sphere and is supported by a tris­(pyrazol­yl)borate ligand that binds to the AgI center in a κ3-fashion.

Accepted 11 March 2016

An iron(II) complex tripodally chelated with 1,1,1-tris­(pyridin-2-yl)ethane showing room-temperature spin-crossover behaviour

In the novel iron(II) complex salt tetra­phenyl­phospho­nium tris­(thio­cyanato)[1,1,1-tris­(pyridin-2-yl)ethane]­ferrate(II), the Fe—N bond lengths indicate that the specimen consists of comparable molar fractions of the low- and high-spin species at 296 K. A magnetic study confirmed that spin-crossover takes place around 290 K.

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