Contractions of quantum symplectic groups

Contractions of the quantum symplectic groups Spq(n) and of the quantum symplectic spaces Sp2n q are investigated. Contracted groups are regarded as Hopf algebras of the noncommutative functions over the algebras with nilpotent generators. The different combinations of the Cayley-Klein scheme of group contractions and the noncommutative quantum structure are studed with the help of permutations of n-th order in the framework of general theory for arbitrary n. The case of n = 2 is considered in detail.