NOVELTY - A metal complex pigment (I) (21), is new.    USE - New metal complex pigment is used for photoelectric conversion element for photoelectrochemical cell (all claimed).    ADVANTAGE - The photoelectric conversion element containing the metal complex pigment has excellent conversion efficiency and durability.    DETAILED DESCRIPTION - A metal complex pigment of formula: M(L1)m(L2)n(X)p.C' (I), is new.    M=metal atom;    L1=bidentate or tridentate ligand of formula (i);    L2=bidentate or tridentate ligand of formula (ii);    X=acyloxy, acylthio, thioacyl oxy, thio acylthio, acyl aminooxy, thiocarbamate, dithiocarbamate, thiocarbonate, dithiocarbonate, trithiocarbonate, acyl, thiocyanate, isothiocyanate, cyanate, isocyanate, cyano, alkylthio, arylthio, alkoxy, aryloxy, halo, carbonyl, dialkylketone, 1,3-diketone, carbonamide, thio carbonamide, thiourea or bidentate ligand;    m=1-3;    n,n5-n11=0-2;    p,a1,a2,b1,b2=0-3;    C'=counter ion which neutralizes electric charge of L1, L2 or X having acidic group;    R1,R2=acidic group;    R3-R11=substituent;    Y1,Y2=group obtained by removing two hydrogens from thiophene-containing ring of formula (v)-(viii);    Y3,Y4=H or substituent;    L1,L2=conjugate chain comprising alkynylene and/or arylene;    or R3+R3=ring (when b1 is 2 or more);    or R4+R4=ring (when b2 is 2 or more);    or R3+R4=ring (when b1 and b2 are 1 or more);    n1-n4=1 or more;    z,c=0 or 1;    or adjoining substituent of R5-R11=ring;    n6+n7,n8+n9,n10+n11=2 or more;and    Za-Zc=nonmetallic atom which forms optionally substituted 5- or 6-membered ring.    An INDEPENDENT CLAIM is included for photoelectric conversion element (10), which has a photosensitive layer containing metal complex pigment (I) and semiconductor fine particles (22).    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the photoelectric conversion element.    Electroconductive support (1)    Photoreceptor layer (2)    Charge transfer material (3)    Counter electrode (4)    Photoelectric conversion element (10)    Metal complex pigment (21)    Semiconductor fine particles (22)    Photoelectrochemical cell (100)