STERICALLY PROMOTED N-2 BOUND TETRAZOLATE COMPLEX-FORMATION IN THE 1,3-DIPOLAR CYCLOADDITION OF P-OMEC6H4CN TO THE COORDINATED AZIDE IN THE PALLADIUM COMPLEX [PD(N-N-S)(N3)] - X-RAY CRYSTAL-STRUCTURE OF [PD(N-N-S)(N4C-P-OMEC6H4]

The 1,3-dipolar cycloaddition of p-OMeC6H4CN to the coordinated azide in the [PdL(N3)] complex (HL = methyl 2-(((2-diethylamino)ethyl)amino)cyclopent-1-enedithiocarboxylate) has been studied. the tetrazolate complex [PdL(N4C-p-OMeC6H4) (1) thus produced has been characterized from its IR and H-1 NMR spectra, and X-ray crystal structure. Complex 1 crystallizes in the triclinic space group P1BAR with a = 8.922(1), b = 17.041(1), c = 8.043(1) angstrom, alpha = 90.26(1), beta = 101.68(1), gamma = 82.81(1)-degrees, V = 1187.8(4) angstrom 3 and D(calc) = 1.546 g cm-3 for Z = 2. The structure was solved by the heavy-atom technique and refined by the block-diagonal least squares method to converge at R = 0.057 and R(w) = 0.051 for 3669 observed ((F(o)) > 3-sigma(F(o))) reflections. The tetrazole in 1 is bound to Pd through its N2 nitrogen atom.