NOVELTY - An ethane oligomerization polymerization catalyst comprises transition metal coordination compound with chlorimide type benzothiazole compound (I).    USE - Catalyst used for ethane oligomerization polymerization (claimed).    ADVANTAGE - The catalyst has relatively good ethane oligomerization and/or polymerization catalysis performance; and iron (II) coordination compound shows high oligomerization and polymerization activity on the ethane, reaching 107 g mol Fe-1h-1.    DETAILED DESCRIPTION - An ethane oligomerization polymerization catalyst comprises transition metal coordination compound with chlorimide type benzothiazole compound of formula (I).    M=post transition metal, preferably Fe(II), Co(II), nickel(II) and Cr(III);    X=halo;    R1-R5=H, alkyl, halo, alkoxy and nitro, preferably H, Me, Et, iPr, F, Cl, Br, methoxy, oxyethyl and nitryl;and    n=1-6.    Provided that:    (A) M is Fe, if R1 is Me, R2, R3, R4 and R5 are H, and X is Cl;    (B) M is Fe, if R2 is Me, R1, R3, R4 and R5 are H, and X is Cl;    (C) M is Fe, if R3 is Me, R1, R2, R4 and R5 are H, and X is Cl;    (D) M is Fe, if R1 and R2 are Me, R3, R4 and R5 are H, and X is Cl;    (E) M is Fe, if R1 and R3 are Me, R2, R4 and R5 are H, and X is Cl;    (F) M is Fe, if R1 and R4 are Me, R2, R3 and R5 are H, and X is Cl;    (G) M is Fe, if R1 and R5 are Me, R2, R3 and R4 are H, and X is Cl;    (H) M is Fe, if R2 and R3 are Me, R1, R4 and R5 are H, and X is Cl;    (I) M is Fe, if R2 and R4 are Me, R1, R3 and R5 are H, and X is Cl;    (J) M is Fe, if R1, R3 and R5 are Me, R2 and R4 are H, and X is Cl;    (K) M is Fe, if R1 and R5 are Me, R3 is Br, R2 and R4 is H, and X is Cl;    (L) M is Fe, R1 is Et, R2, R3, R4 and R5 are H, and X is Cl;    (M) M is Fe, if R1 is Et, R5 is Me, R2, R3 and R4 are H, and X is Cl;    (N) M is Fe, if R1 and R5 are Et, R2, R3 and R4 are H, and X is Cl;    (O) M is Fe, if R1 is iPr, R2, R3, R4 and R5 are H, and X is Cl;    (P) M is Fe, if R1 and R5 are iPr, R2, R3 and R4 are H, and X is Cl;    (Q) M is Fe, if R1 is F, R2, R3, R4 and R5 are H, and X is Cl;    (R) M is Fe, if R1 is F, R3 is Me, R2, R4 and R5 are H, and X is Cl;    (S) M is Fe, if R1 and R5 are CF3, R2, R3 and R4 are H, and X is Cl;    (T) M is Fe, if R1 and R5 are F, R3 is CF3, R2 and R4 is H, and X is Cl;    (U) M is Fe, if R1 and R5 are Cl, R2, R3 and R4 are H, and X are Cl;    (V) M is Fe, if R1 and R5 are Br, R2, R3 and R4 are H, and X is Cl;    (W) M is Fe, if R2 is NO2, R1, R3, R4 are R5 are H, and X is Cl;    (X) M is Fe, if R1 is Me, R2 is OMe, R3, R4 and R5 are H, and X is Cl;    (Y) M is Co, if R1 and R5 are Me, R2, R3 and R4 are H, and X is Cl;    (Z) M is Co, if R1, R3 and R5 are Me, R2 and R4 are H, and X is Cl;    (() M is Co, if R1 and R5 are Me, R3 is Br, R2 and R4 are H, and X is Cl;    (\) M is Co, if R1 and R5 are Et, R2, R3 and R4 are H, and X is Cl;    ()) M is Co, if R1 and R5 are iPr, R2, R3 and R4 are H, and X is Cl;    (^) M is Co, if R1 and R5 are CF3, R2, R3 and R4 are H, and X is Cl;    (_) M is Co, if R1 and R5 are Cl, R2, R3 and R4 are H, and X is Cl;    (`) M is Co, R1 and R5 are Br, R2, R3 and R4 are H, and X is Cl;    (a) M is Ni, if R1 and R5 are Me, R2, R3 and R4 are H, and X is Cl;    (b) M is Ni, if R1, R3 and R5 are Me, R2 and R4 are H, and X is Cl;    (c) M is Ni, if R1 and R5 are Me, R3 is Br, R2 and R4 are H, and X is Cl;    (d) M is Ni, if R1 and R5 are Et, R2, R3 and R4 are H, and X is Cl;    (e) M is Ni, if R1 and R5 are iPr, R2, R3 and R4 are H, and X is Cl;    (f) M is Ni, if R1 and R5 are CF3, R2, R3 and R4 are H, and X is Cl;    (g) M is Ni, if R1 and R5 are Cl, R2, R3 and R4 are H, and X is Cl;    (h) M is Ni, if R1 and R5 are Br, R2, R3 and R4 are H, and X is Cl;    (i) M is Ni, if R1 and R5 are Me, R2, R3 and R4 are H, and X is Br;    (j) M is Ni, if R1, R3 and R5 are Me, R2 and R4 are H, and X is Br;    (k) M is Ni, if R1 and R5 are Me, R3 is Br, R2 and R4 are H, and X is Br;    (l) M is Ni, if R1 and R5 are Et, R2, R3 and R4 are H, and X is Br;    (m) M is Ni, if R1 and R5 are iPr, R2, R3 and R4 are H, and X is Br;    (n) M is Ni, if R1 and R5 are CF3, R2, R3 and R4 are H, and X is Br;    (o) M is Ni, if R1 and R5 are Cl, R2, R3 and R4 are H, and X is Br;    (p) M is Ni, if R1 and R5 are Br, R2, R3 and R4 are H, and X is Br;    (q) M is Cr, if R1 and R5 are Me, and R2, R3 and R4 are H;    (r) M is Cr, if R1, R3 and R5=Me, and R2 and R4 are H;    (s) M is Cr, if R1 and R5 are Me, R3 is Br, R2 and R4 are H, and X is Cl;    (t) M is Cr, if R1 and R5 are Et, and R2, R3 and R4 are H;    (u) M is Cr, if R1 and R5 are iPr, and R2, R3 and R4 are H;    (v) M is Cr, if R1 and R5 are CF3, and R2, R3 and R4 are H;    (w) M is Cr, if R1 and R5 are Cl, and R2, R3 and R4 are H;and    (x) M is Cr, if R1 and R5 are Br, and R2, R3 and R4 are H.