Structure and stability of electronsprayed cytidinenCu2+ and cytidinenH+ (n = 1-4) compounds in the gas phase

- The stability and structure of [CuLn]2+ and [LnH]+ (L = cytidine) were investigated.
- The main interaction between the Cu(II) and L for [CuLn]2+ is coordination.
- The main interaction between Ls for [LnH]+ is hydrogen bond.
- The stability order for [CuLn]2+ is [CuL2]2+ > [CuL]2+ > [CuL4]2+ > [CuL3]2+.
- The stability order for [LnH]+ is [L2H]+ > [LH]+ > [L3H]+ > [L4H]+.