Compounds with fire extinguishing properties having the formula:

##STR00001##

wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula: ##STR00001##
wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula: ##STR00001##
wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

The present disclosure provides compounds, compositions, and methods for preparing alkenyl halides and/or haloalkyl-substituted olefins with Z-selectivity. The methods are particularly useful for preparing alkenyl fluorides such as CF.sub.3-substituted olefins by means of cross-metathesis reactions using halogen-containing molybdenum and tungsten complexes.

The present disclosure provides compounds, compositions, and methods for preparing alkenyl halides and/or haloalkyl-substituted olefins with Z-selectivity. The methods are particularly useful for preparing alkenyl fluorides such as CF.sub.3-substituted olefins by means of cross-metathesis reactions using halogen-containing molybdenum and tungsten complexes.

Compounds with fire extinguishing properties having the formula:

##STR00001##

wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula:

##STR00001##

wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula: ##STR00001##
wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

Compounds with fire extinguishing properties having the formula: ##STR00001##
wherein R.sup.1 is CR.sup.5R.sup.6R.sup.7 or CR.sup.5R.sup.6CR.sup.8R.sup.9R.sup.10 as well as fire extinguishing units including one or more of the compounds.

The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and/or stereoselectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and Z-selectivity. In some embodiments, the present disclosure provides methods for preparing alkenyl halide with regioselectivity and E-selectivity. In some embodiments, provided technologies are particularly useful for preparing alkenyl fluorides. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-a. In some embodiments, a provided compound useful for metathesis reactions has the structure of formula II-b.