Correction: New light on an old debate: Does the RCN-PtCl2 bond include any back-donation? RCN ← PtCl2 backbonding: Vs. the IR ν CN blue-shift dichotomy in organonitriles-platinum(ii) complexes. A thorough density functional theory-energy decomposition analysis study (Dalton Transactions (2019) DOI: 10.1039/c9dt02440a)

(i) In the "Abstract" section Erratum "⋯RCNX (X = H+, alkaline, Lewis acids)". Corrigendum "⋯RCNX (X = H+, Lewis acids)". (ii) In the "Introduction" section Reference 6b, instead of reference 1, must be cited at the end of this sentence. Erratum "The explanation of this behavior based solely on the s/p donation/backdonation orbital interaction model discussed earlier, would imply the lack of any N ← Pt π back-donation, or at least the occurrence of such interaction which cannot overcome the effect of the N → Pt σ donation".1 Corrigendum "The explanation of this behavior based solely on the σ/π donation/backdonation orbital interaction model discussed earlier, would imply the lack of any N ← Pt π back-donation, or at least the occurrence of such interaction which cannot overcome the effect of the N → Pt σ donation".6b (iii) In the "EDA-NOCV analysis" section Erratum "The results are given in Table 4 and indicate that the total N ← Pt π back-donation represents about 30% of the total ΔEOrb term and ranges from 32% to 37% with respect to the N → Pt σ interaction which means that the orbital interaction⋯" Corrigendum "The results are given in Table 4 and indicate that the total N → Pt π back-donation represents about 30% of the total ΔEOrb term and ranges from 32% to 37% with respect to the total N-Pt σ + π interactions which means that the orbital interaction⋯" (iv) In the (a) "Infrared properties of the CN bond" and (b) "Conclusion" sections Reference 24 in the following sentences should be replaced by ref.19, i.e.: (a) Erratum "These results indicate that the νCuN blue-shift in these complexes is not correlated to the CuN bond strength, in agreement with what is already reported for some Pt(II,IV)N systems, including the herein investigated trans-1".24 Corrigendum "These results indicate that the νCuN blue-shift in these complexes is not correlated to the CuN bond strength, in agreement with what is already reported for some Pt(II,IV)N systems, including the herein investigated trans-1".19 (b) Erratum "In this context, EDA-NOCV further confirmed that the νCuN was not correlated to the CuN bond strength as already previously found".24 Corrigendum "In this context, EDA-NOCV further confirmed that the νCuN was not correlated to the CuN bond strength as already previously found".19 The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.