Rhenium versus cadmium: an alternative structure for a thermally stable cadmium carbonyl compound

Abstract

The previously reported novel cadmium carbonyl compound, [Cd(CO)3(C6H3Cl)]4, is better formulated as the rhenium compound, [Re(CO)3(C4N2H3S)]4.

Reassessment of N2 activation by low-valent Ti-amide complexes: a remarkable side-on bridged bis-N2 adduct is actually an arene adduct

“…For example, Parkin and co-workers recently determined that the complex [Cd(CO) 3 (C 6 H 3 Cl)] 4 with a reasonable R 1 = 0.068 was instead [Re(CO) 3 (C 4 N 2 H 3 S)] 4 with an R 1 = 0.034. 53 …”

Fluoro-Bridged Clusters in Rare-Earth Metal–Organic Frameworks

“…This may only be suggestive since one of the main limitations in single-crystal X-ray diffraction is the distinction of neighboring elements with similar atomic numbers. 50 To validate the presence of μ 3 -F sites in the structure, we utilized complementary analytical techniques that could distinguish between μ 3 -O and μ 3 -F.…”

“…Refined models with μ 3 -F bridges have both thermal/displacement ellipsoids and U eq larger than the RE sites; this in agreement with comparative expectations. This may only be suggestive since one of the main limitations in single-crystal X-ray diffraction is the distinction of neighboring elements with similar atomic numbers . To validate the presence of μ 3 -F sites in the structure, we utilized complementary analytical techniques that could distinguish between μ 3 -O and μ 3 -F.…”

Distortions, deviations and alternative facts: reliability in crystallography

“…Another case I encountered as an Editor of Acta Crystallographica Section E in the early years of the journal was the claim of an unprecedented one-coordinate copper atom attached to only a single ligand; closer inspection demonstrated that the 'copper' atom was almost certainly bromine. A recent thorough analysis of one probable error of this kind, with several misidentified atoms including the rather extreme case of cadmium instead of rhenium (Amemiya et al, 2020), also gives an extensive list, in its references 66-68, of other known examples.…”