Lithium extractant compounds having the following structure:

##STR00001##

wherein: R.sup.a and R.sup.b are independently selected from the group consisting of hydrocarbon groups (R), —OR, —NRR′, —SR, —SO.sub.2R, —SO.sub.2NR.sub.2, —C(O)R, —C(O)OR, —C(O)NRR′, —C(S)OR, —C(O)SR, and —C(S)NRR′; R′ is selected from R′ groups, wherein R′ is selected from H and R groups; X is O or OH; Y is C or N, wherein, when Y is N, then R.sup.a is R. Also described are hydrophobic water-insoluble solutions containing at least one extractant compound of Formula (1). Also described is a method for extracting lithium from an aqueous solution by contacting the aqueous solution with the hydrophobic solution, and optional stripping of lithium from the hydrophobic solution by contacting the hydrophobic solution with an aqueous stripping solution.

Provided are an electrolytic solution for a non-aqueous secondary battery containing an electrolyte, an organic solvent, and a metal complex represented by General Formula (I), a non-aqueous secondary battery in which the electrolytic solution for a non-aqueous secondary battery is used, and a metal complex. ##STR00001## In General Formula (I), M represents a transition metal. k represents an integer of 0 or more, m represents an integer of 0 to 4, and n represents an integer of 1 or more. Here, k+n represents a valence of M. R.sup.1 represents an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. R.sup.2 and R.sup.3 represent a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. L represents a monodentate ligand.

Provided are an electrolytic solution for a non-aqueous secondary battery containing an electrolyte, an organic solvent, and a metal complex represented by General Formula (I), a non-aqueous secondary battery in which the electrolytic solution for a non-aqueous secondary battery is used, and a metal complex. ##STR00001## In General Formula (I), M represents a transition metal. k represents an integer of 0 or more, m represents an integer of 0 to 4, and n represents an integer of 1 or more. Here, k+n represents a valence of M. R.sup.1 represents an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. R.sup.2 and R.sup.3 represent a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, a carbonyl group-containing group, a sulfonyl group-containing group, or a halogen atom. L represents a monodentate ligand.

To provide a cobalt complex which is liquid at room temperature, useful for producing a cobalt-containing thin film under conditions without using an oxidizing gas.

A cobalt complex represented by the following formula (1):

L.sup.1-Co-L.sup.2  (1)

wherein L.sup.1 and L.sup.2 represent a unidentate amide ligand of the following formula (A), a bidentate amide ligand of the following formula (B) or a hetero atom-containing ligand of the following formula (C):

##STR00001##

wherein R.sup.1 and R.sup.2 represent a C.sub.1-6 alkyl group or a tri(C.sub.1-6 alkyl)silyl group, and the wave line represents a binding site to the cobalt atom;

##STR00002##

wherein R.sup.3 represents a tri(C.sub.1-6 alkyl)silyl group, R.sup.4 and R.sup.5 represent a C.sub.1-4 alkyl group, and X represents a C.sub.1-6 alkylene group;

##STR00003##

wherein R.sup.6 and R.sup.8 represent a C.sub.1-6 alkyl group, R.sup.7 represents a hydrogen atom or a C.sub.1-4 alkyl group, Y represents an oxygen atom or NR.sup.9, Z represents an oxygen atom or NR.sup.10, and R.sup.9 and R.sup.10 independently represent a C.sub.1-6 alkyl group.

To provide a cobalt complex which is liquid at room temperature, useful for producing a cobalt-containing thin film under conditions without using an oxidizing gas. A cobalt complex represented by the following formula (1): ##STR00001##
wherein L.sup.1 and L.sup.2 represent a unidentate amide ligand of the following formula (A), a bidentate amide ligand of the following formula (B) or a hetero atom-containing ligand of the following formula (C): ##STR00002##
wherein R.sup.1 and R.sup.2 represent a C.sub.1-6 alkyl group or a tri(C.sub.1-6 alkyl)silyl group, and the wave line represents a binding site to the cobalt atom; ##STR00003##
wherein R.sup.3 represents a tri(C.sub.1-6 alkyl)silyl group, R.sup.4 and R.sup.5 represent a C.sub.1-4 alkyl group, and X represents a C.sub.1-6 alkylene group; ##STR00004##
wherein R.sup.6 and R.sup.8 represent a C.sub.1-6 alkyl group, R.sup.7 represents a hydrogen atom or a C.sub.1-4 alkyl group, Y represents an oxygen atom or NR.sup.9, Z represents an oxygen atom or NR.sup.10, and R.sup.9 and R.sup.10 independently represent a C.sub.1-6 alkyl group.

A thermally conductive additive is excellent in thermal conductivity improvement effect and has high processability, and a thermally conductive composite material and a wire harness each contain such a thermally conductive additive. The thermally conductive additive includes an organic component and a metal-containing component, where the organic component is configured as an organic compound including a coordination part that can multidentate-coordinate to a metal, and at least one functional group bonded to the coordination part and having a conjugated π-electron system, and the organic component coordinates in the coordination part to a metal atom constituting the metal-containing component to form a coordination complex. The thermally conductive composite material includes the thermally conductive additive and a matrix material, where the thermally conductive additive is dispersed in the matrix material. The wire harness includes the thermally conductive composite material.

A thermally conductive additive is excellent in thermal conductivity improvement effect and has high processability, and a thermally conductive composite material and a wire harness each contain such a thermally conductive additive. The thermally conductive additive includes an organic component and a metal-containing component, where the organic component is configured as an organic compound including a coordination part that can multidentate-coordinate to a metal, and at least one functional group bonded to the coordination part and having a conjugated π-electron system, and the organic component coordinates in the coordination part to a metal atom constituting the metal-containing component to form a coordination complex. The thermally conductive composite material includes the thermally conductive additive and a matrix material, where the thermally conductive additive is dispersed in the matrix material. The wire harness includes the thermally conductive composite material.

To provide a metal-containing additive and a crosslinkable polymer composition that each contain a -diketonato metal complex and have excellent storage stability, and provide a crosslinked polymer material, a metal member, and a wire harness that are each produced using such a crosslinkable polymer composition. The metal-containing additive includes the -diketonato metal complex and a primary alkyl alcohol having 4 to 30 carbon atoms. The crosslinkable polymer composition includes the metal-containing additive and an organic polymer, where the organic polymer has a substituent capable of forming ionic bonds with metal ions released by heat from the metal-containing additive.

A positive electrode mixture containing: a polyvinylidene fluoride (A); a positive electrode active material (C) represented by the general formula (C): Li.sub.yNi.sub.1-XM.sub.xO.sub.2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D), wherein the polyvinylidene fluoride (A) is a combination of: (A2) a polymer containing vinylidene fluoride unit and a fluorinated monomer unit; and at least one selected from the group consisting of (A3) a polymer containing vinylidene fluoride unit and a polar group-containing monomer unit, and (A4) a polymer containing vinylidene fluoride unit, a fluorinated monomer unit, and a polar group-containing monomer unit. Also disclosed is a positive electrode famed from the positive electrode mixture and a secondary battery including the positive electrode.

A positive electrode mixture containing: a polyvinylidene fluoride (A); a positive electrode active material (C) represented by the general formula (C): Li.sub.yNi.sub.1-XM.sub.xO.sub.2, wherein x is 0.01?x?0.7, y is 0.9?y?2.0, and M represents a metal atom (excluding Li and Ni); and an additive (D), wherein the polyvinylidene fluoride (A) is a combination of: (A2) a polymer containing vinylidene fluoride unit and a fluorinated monomer unit; and at least one selected from the group consisting of (A3) a polymer containing vinylidene fluoride unit and a polar group-containing monomer unit, and (A4) a polymer containing vinylidene fluoride unit, a fluorinated monomer unit, and a polar group-containing monomer unit. Also disclosed is a positive electrode famed from the positive electrode mixture and a secondary battery including the positive electrode.