The present invention relates to the use as perfuming ingredient, in particular to confer odor notes of the violet, violet leaves type, of a compound of formula (I), wherein n represents 1 or 2, A represents CH.sub.2 or CO; and R represents a C.sub.1-4 alkyl or alkenyl group or a C.sub.3 cycloalkyl group, or when A is a CH.sub.2 group R may also represent a C.sub.1-3 acyl group. Moreover, following what is mentioned herein, the present invention comprises the invention's compound as part of a perfuming composition or of a perfuming consumer product. ##STR00001##

The present invention relates to fields of organic chemistry and organometallic chemistry. The present invention discloses a chain multiyne compound, a preparation method thereof and an application in synthesizing a fused-ring metallacyclic compound. A structure of the chain multiyne compound in the present invention is shown as Formula I below. The present invention also provides a preparation method of the chain multiyne compound and an application thereof in a synthesis of a fused-ring metallacyclic compound. The chain multiyne compound disclosed in the present invention has multiple functional groups and the structure of the chain multiyne compound is adjustable. The chain multiyne compound can also be used to synthesize the fused-ring metallacyclic compound efficiently. The preparation method of the chain multiyne compound disclosed in the present invention is simple, which can be used to prepare the chain multiyne compound rapidly and efficiently.

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A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes a triple bond compound and a fluorophosphoric acid salt. The triple bond compound includes a compound represented by Formula (1), a compound represented by Formula (2), or both. The fluorophosphoric acid salt includes a compound represented by Formula (3), a compound represented by Formula (4), or both.

A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes a triple bond compound and a fluorophosphoric acid salt. The triple bond compound includes a compound represented by Formula (1), a compound represented by Formula (2), or both. The fluorophosphoric acid salt includes a compound represented by Formula (3), a compound represented by Formula (4), or both.