Additions and corrections

Synthesis and characterisation of ruthenium dihydrogen complexes and their reactivity towards B–H bonds

Jong-Hoo Choi, Nils E. Schloerer, Josefine Berger and Martin H. G. Prechtl

Dalton Trans., 2014, 43, 290–299 (DOI: 10.1039/DOI: c3dt52037d). Amendment published 11th March 2014.

In the paper, the authors omitted the following information:

p. 290, right column, line 10 (additional references):
In addition to the ref. 13 and 14 the following references A1-4 should be added regarding general approaches with pincer complexes for catalytic amine borane dehydrogenation:
A1. A. Friedrich, M. Drees and S. Schneider, Chem. Eur. J., 2009, 15, 10339-10342.
A2. M. Kass, A. Friedrich, M. Drees and S. Schneider, Angew. Chem. Int. Ed., 2009, 48, 905-907.
A3. A. Staubitz, M. E. Sloan, A. P. M. Robertson, A. Friedrich, S. Schneider, P. J. Gates, J. S. A. D. Gunne and I. Manners, J. Am. Chem. Soc., 2010, 132, 13332-13345.
A4. B. Askevold, H. W. Roesky and S. Schneider, Chemcatchem, 2012, 4, 307-320.
20 p. 290, right column, line 15-18; the sentence should be read as: “Besides complex 3, Schneider et al. reported formation of ruthenium hydride complexes (4 and 5) during ruthenium nitride hydrogenolysis to ammonia.¹⁹”
p. 291, left column, line 1-7; the sentences should be read as: “The spectroscopic evidence was provided by NMR relaxation time measurements and DFT calculations. The authors found for complex 4 respectively for complex 5 H–H distances of 1.57 Å and 1.31 Å.”
p. 291, left column, penultimate line (add ref. 19): The ref. 19 should be cited regarding the NMR data of complexes 4 and 5.
p. 291, right column, line 2-3 (change to): “[Ru(H₂)H₂(HPNP)] 4”
p. 291, right column, line 5 (change to): “[Ru(H₂)H(PNP)] 5”
p. 291, right column, line 11 (additional explanations and references to be inserted as footnote): “Footnote: In this work, for the reported H-H bond length calculations rapid ligand spinning has been considered and not slow motion.^A5 On the NMR time scale we observed in the whole temperature range no decoalescence of the single hydride/dihydrogen signal which is characteristic for cis hydrido dihydrogen complexes.^A6 Moreover, in case of slow motion decoalescence of the signal should occur due to “magnetic or chemical inequivalence of the two nuclei” in the dihydrogen ligand.^A5 This has not been observed. Additionally, rapid spinning occurs when the H₂-ligand is situated trans to a classical hydride ligand, like in the equatorial plane of complex 4 or 5.^A5 However, a trans situation of H₂ to the N-ligand in a [Ru(H₂)H₂(PNP)] is not possible (see ref. 3). Therefore, the calculation considers rapid rotation of the H₂ ligand which is related to a low energy barrier for rotation.^A5 Moreover, due to the dynamic exchange with the classical hydrides, and higher T_1(min) values for classical hydrides, the reported overall T_1(min) values for the H₂ ligand can be assigned only as upper limit for the distance in the coordinated H₂ moiety (see ref. 18). Consequently we calculated the H-H distance considering rapid spinning and not slow motion of the ligand.”
A5. R. H. Morris, Coord. Chem. Rev., 2008, 252, 2381-2394.
A6. S. Sabo-Etienne and B. Chaudret, Coord. Chem. Rev., 1998, 178, 381-407.
p. 292, left column, line 17-18; the sentence should be read as follows including new citations: “The lability of tetrahydride 4 in equilibrium with 5 can be explained by the cooperative properties of the H-PNP pincer backbone, according to the observations by other groups with similar systems.^{A2, A4, A7-9}.”
A7. A. Friedrich, M. Drees, M. Kass, E. Herdtweck and S. Schneider, Inorg. Chem., 2010, 49, 5482-5494.
A8. S. Schneider, J. Meiners and B. Askevold, Eur. J. Inorg. Chem., 2012, 412-429.
A9. T. C. Wambach, J. M. Ahn, B. O. Patrick and M. D. Fryzuk, Organometallics, 2013, 32, 4431-4439.
p. 292, right column, line 5; additional reference: A8
p. 294, left column, last paragraph, first sentence should be read as: “The structure of complex 11 (Fig. 8, Table 1) was tentatively determined also by X-ray analysis, however we are aware of the limitations of this technique regarding metal hydrides and related compounds.”
p. 295, right column, line 3 (delete): “rigid”
p. 295, right column, line 6-10; compare to original citations: 4, 13, 15, 24
p. 296, left column, line 28 (change to): “Synthesis of [Ru(H₂)H₂(H-PNP)] 4
and [Ru(H₂)H(PNP)] 5”
p. 296, left column, line 29-31 (change to): “[…]H-PNP ligand 8[…].”

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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