conditions Pd(OAc)2 in acetic acid at 398 K}. A comparative study of the spectroscopic and photo-optical properties of ligands 2a–2c and their palladium(II) derivatives (3a–3c) is also reported. Addition of PPh3 to CH2Cl2 solutions of compounds 3a–3c produced the opening of the six-membered metallacycle and the formation of the trans-[Pd(κ1-N)Cl(PPh3)2] derivatives (4a–4c). The crystalstructures of 3c·CH2Cl2
三种偶氮衍生物R 1 –N N – R 2,R 1 = 2-苯基吲哚,R 2 = 4-Me – C 6 H 4-(2a),4-Cl – C 6 H 4-(2b)的合成或2-苯基吲哚(2c)},并介绍了它们在Pd(II)盐前的反应性的研究。在298 K的CH 2 Cl 2:CH 3 OH混合物中用PdCl 2处理2a或2b,然后PPh 3的作用产生了环钯配合物:[Pd(κ2 - C,N)Cl(PPh 3)](3a和3b)具有σ Pd-C(吲哚)}键。对于2c而言,金属化作用发生在相同位置,但需要更强的反应条件在398 K的酸性溶液中的Pd(OAc)2 }。还报道了对配体2a - 2c及其钯(II)衍生物(3a - 3c)的光谱和光光学性质的比较研究。将PPh 3加入化合物3a - 3c的CH 2 Cl 2溶液中所产生的六元金属环的开口部而形成的反式- [钯(κ 1 - ñ)氯(PPH