Corrigendum: Fine Tuning of Metallaborane Geometries: Chemistry of Metallaboranes of Early Transition Metals Derived from Metal Halides and Monoborane Reagents

Authors

  • Shubhankar Kumar Bose,

  • K. Geetharani,

  • V. Ramkumar,

  • Shaikh M. Mobin,

  • Dr. Sundargopal Ghosh

Errata

This article corrects:

  1. Fine Tuning of Metallaborane Geometries: Chemistry of Metallaboranes of Early Transition Metals Derived from Metal Halides and Monoborane Reagents Volume 15, Issue 48, 13483–13490, Article first published online: 5 November 2009

In the Full Paper by S. Ghosh et al., mistakes have been found in the interpretation of proton resonances for compound 4. Previously, it was deduced that the resonance at δ=−10.9 ppm corresponded to four protons, which was incorrect. The corrections are as follows: On page 13 487, in paragraph 2, as the temperature is lowered the resonance at δ=−10.9 ppm collapses into four resonances. The two resonances appearing at δ=−10.7 and −11.4 ppm should be assigned to two Ta[BOND]H[BOND]B protons, the resonance at δ=4.15 ppm is assigned to two B5[BOND]Ht (t=terminal) protons, and the signal at δ=−15.9 ppm is assigned to Ta[BOND]Ht. These results illustrate that Ta1 and Ta2 become inequivalent at the lowest experimental temperatures due to the tantalum hydride. Therefore, the correct chemical formula of compound 4 in the abstract; on page 13 486 and in the legend of Figure 5; on page 13 488 and in entry 6 of Table 2; and in the Table of Contents should be [(Cp*Ta)2B4H9(μ-BH4)]. In the abstract, on page 13 483, and on page 13 486, [(Cp*Ta)2B4H8] should be replaced with [(Cp*Ta)2B4H9]. In the Experimental Section on page 13 489, the following corrections should be made to the synthesis of 4: 1H NMR: δ=−10.91 (br, 5H); elemental analysis calcd (%) for 12C201H4311B5180Ta2: C 34.34, H 6.20. Additionally, the schematic diagram of 4 in Figure 7 on page 13 488 is shown correctly here. The authors sincerely apologize for these oversights and thank Prof. R. B. King for bringing this error to our attention.

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