New sub-{mu}s isomers in {sup 125,127,129}Sn and isomer systematics of {sup 124-130}Sn

New sub-{mu}s isomers have been observed in the neutron-rich Sn isotopes. {sup 125,127,129}Sn nuclei have been produced in a relativistic fission reaction of {sup 238}U on a {sup 9}Be target at 750 A{center_dot}MeV and by the fragmentation of {sup 136}Xe at 600 A{center_dot}MeV populating high-spin yrast states. In addition to the already known {mu}s isomers, three new ones with sub-{mu}s half-lives have been observed. These yrast isomers are the high-spin members of the {nu}(d{sub 3/2}{sup -1}h{sub 11/2}{sup -2}) and {nu}h{sub 11/2}{sup -n}, seniority v=3 multiplets leading to isomeric (23/2{sup +}) and (27/2{sup -}) states, respectively. Added to the already known 19/2{sup +}{mu}s isomers in this region the current work completes the systematic information of neutron-hole excitations toward the filling of the last h{sub 11/2} orbital at N=82. The results are discussed in the framework of state-of-the-art shell-model calculations using realistic interactions.