Reactions of the bis(3,5-dimethylpyrazolyl)cyclotriphosphazene derivat
ives gem-N3P3(MeNCH(2)CH(2)O)(2)(dmp)(2) (1) and nongeminal cis-N3P3(O
Ph)(4)(dmp)(2) (2) with PdCl2 afford complexes of the type [PdCl2.(L)]
(L = 1 or 2). In these complexes, the phosphazenes act as bidentate N
N-donor ligands with the two pyrazolyl pyridinic nitrogen atoms bonded
to the metal, thus forming a six- and an eight-membered chelate ring,
respectively. The structures of 2 and [PdCl2.(2)] (4) have been confi
rmed by single-crystal X-ray diffraction. Crystal data for 2: a = 16.7
59(2) Angstrom, b = 10.788(3) Angstrom, c = 19.635(9) Angstrom, beta =
101.61(3)degrees, P2(1/c), Z = 4, R = 0.038 for 4688 reflections with
F > 5 sigma(F). Crystal data for 4: a = 9.701(3) Angstrom, b = 24.853
(4) Angstrom, c = 15.794(4) Angstrom, beta = 101.46(2)degrees, P2(1/n)
, Z = 4, R = 0.030 for 5416 reflections with F > 5 sigma(F).