Metal cations and metal effect pigments comprising anions containing phosphorus and/or sulphur, method for producing said metal effect pigments and use thereof

The invention relates to a metal effect pigment, selected from the group consisting of aluminium in flake form, metal pigments in flake form having a copper content of 60 to 100 wt % and mixtures thereof, comprising a coating made of silicon oxide SiOx, where x is a number from 1 to 2, wherein the coated metal effect pigment contains both metal cations and anions containing phosphorus and/or sulphur, wherein the metal cations and the anions containing phosphorus and/or sulphur are each present independently of one another on the metal effect pigment surface and/or in the silicon oxide layer SiOx, and wherein the respective element ratio in at.% of metal cation MK and phosphorus P and/or sulphur S to silicon Si is defined according to formulas (I) and (II) 100% x (MK+P) / Si (I) and/or 100% x (MK+S) / Si (II) and overall is in a range from 0.5 to 35%. The invention further relates to the coated metal effect pigments which can be produced by means of the method according to the invention and also to the use the