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Two new homoscorpionates, TpMe,mt3 and TpMe,mt4 were prepared, as the first examples of Tpx ligands containing a 3-Me but 5R-substituents other than Me. Structures of Co[TpMe,mt3][TpNt] and Rh[TpMe,mt4](COD) were determined by X-ray crystallography.
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Rheingold et al. (2000) studied this question.
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