The present invention relates to novel pyridinyl derivatives of Formula wherein Y, Z, L, R1 through R11, n, m, p, q, t are as defined herein, that are 5-HT receptor ligands, particularly the 5-HT6 subtype, and as such are useful for treating diseases wherein modulation of 5-HT activity is desired. The present invention relates to novel pyridinyl derivatives including their pharmaceutically acceptable salts. The invention also relates to processes for the preparation of, intermediates used in the preparation of, pharmaceutical compositions containing and the uses of such compounds in treating diseases of the central nervous system such as schizophrenia.