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Abstract 1-Titanacyclopent-3-yne and 1-hafnacyclopent-3-yne complexes were synthesized, and one of the titanium compounds was structurally characterized. Its molecular structure was similar to the zirconium analogue, although shorter Ti–C bonds may emphasize the ring strain of the five-membered cyclic alkyne structure.
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Suzuki et al. (2004) studied this question.
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