The invention relates to metal(I) complexes of the formula A and to the use thereof in optoelectronic components, especially in OLEDs, with M = independently selected from the group consisting of Cu and Ag; X = independently selected from the group consisting of Cl, Br, I, CN, OCN, SCN, alkynyl, thiolate and N
3 ; L = a tetradentate ligand composed of two identical or different subunits EHD joined via a spacer unit S'' and optionally S', with E = RE* (when E*= N, P, As, Sb) or E* (when E* = C*, O, S) with E* independently selected from the group consisting of N, where N is not an imine nitrogen atom or part of an N-heteroaromatic ring, P, C*, O, S, As and Sb with C*= a divalent carbene carbon atom and R = independently selected from the group consisting of hydrogen, halogen and substituents bonded directly or via oxygen atoms (-OR), nitrogen atoms (-NR
2 ), silicon atoms (-SiR
3 ) or sulfur atoms (-SR), and alkyl, heteroalkyl, aryl, heteroaryl, alkenyl and alkynyl groups or substituted alkyl, heteroalkyl, aryl, heteroaryl and alkenyl groups (with substituents such as halogens or deuterium, alkyl groups, heteroalkyl groups, aryl groups, heteroaryl groups); D = RD* (when D* = N, P, As, Sb) or D* (when D* = C*, O, S) with D* independently selected from the group consisting of N, where N is not an imine nitrogen atom or part of an N-heteroaromatic ring, P, C*, O, S, As and Sb with C*= a divalent carbene carbon atom and R = independently selected from the group consisting of hydrogen, halogen and substituents bonded directly or via oxygen atoms (-OR), nitrogen atoms (-NR
2 ), silicon atoms (-SiR
3 ) or sulfur atoms (-SR), and alkyl, heteroalkyl, aryl, heteroaryl, alkenyl and alkynyl groups or substituted alkyl, heteroalkyl, aryl, heteroaryl and alkenyl groups; where D and E are different from one another.