Agostic Pd ⋯ H + ⋯ NHR 2 and apical Pd ⋯ NHR 2 interactions: the synthesis and structures of [Pd II Cl 2 (H[9]aneN 3 )] + , the Pd II –Pd II dimer [(H[9]aneN 3 )Cl 2 Pd–PdCl 2 (H[9]aneN 3 )] 2+ , and [Pd(Me 3 [9]aneN 3 )(NCMe) 2 ] 2+

Long-range agostic Pd ⋯ H+⋯ NHR2 interactions are observed in the crystal structure of the protonated form of cis-[PdIICl2([9]aneN3)], while a direct apical Pd ⋯ NHR2 interaction is observed in the purple complex [Pd(Me3[9]aneN3)(NCMe)2](PF6)2.