Catalyst for olefin multimerization and method for producing olefin multimer in presence of catalyst for olefin multimerization

An olefin oligomerization catalyst (III) obtained by contacting (D) a transition metal compound having a transition metal atom selected from Group III to Group X of the periodic table with a preliminary contact solid catalyst component (II) obtained by contacting a solid catalyst component (I) formed by supporting (B) an organoaluminum oxy-compound (b-2) on (A) a solid carrier with (C) at least one compound selected from the group consisting of an organometallic compound (c-1), an organoaluminum oxy-compound (c-2), and a compound (c-3) that reacts with the transition metal compound (D) to form a pair of ions,

• wherein the transition metal compound (D) is represented by general formula (1) below:
• in the general formula (1), R1 to R6 may be the same as or different from each other and each represent a hydrogen atom, a halogen atom, a hydrocarbon group, a heterocyclic compound residue, an oxygen-containing group, a nitrogen-containing group, a boron-containing group, an aluminum-containing group, a sulfur-containing group, a phosphorus-containing group, a silicon-containing group, a germanium-containing group, or a tin-containing group, in which two or more thereof may be linked to each other, and R1 may be linked to Z;
• M represents a transition metal atom selected from Group III to Group X of the periodic table;
• n represents a valence of M;
• X represents a hydrogen atom, a halogen atom, a hydrocarbon group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group, a boron-containing group, an aluminum-containing group, a phosphorus-containing group, a halogen-containing group, a heterocyclic compound residue, a silicon-containing group, a germanium-containing group, or a tin-containing group, in which atoms or groups represented by X may be the same as or different from each other, and the groups represented by X may be linked to each other to form a ring;
• Y represents an oxygen atom, a nitrogen atom, a phosphorus atom, or a sulfur atom;
• Z represents a hydrocarbon group or a heterocyclic compound residue that may have a substituent, and the minimum number of bonds linking Y and N is 4 to 6;
• in the formula, a bond linking Y and Z may be a double bond or a triple bond, and a bond linking Y and R1 may be a double bond or a triple bond;
• and
• in the formula, each dotted line represents a coordination bond.