The synthesis and Crystal Structures of di-m-dichlorobis{[ N,N-dimethylaminobenzyl-C1,N]dipalladium(II)} and of the Cocrystals of {chloro-(triphenylphosphino)- bis[N,N-dimethylaminobenzyl-C1,N]palladium(II)} and {trans-bis(triphenylphosphino)-chloro- [N,N

The X-ray crystal structures of cyclopalladated complexes are reported. Reaction of {[Pd(dmba)(m-Cl)]2}, (1), (dmba ¼ N(CH3)2- CH2C6H5) with triphenylphosphine gave crystals containing {chloro–(triphenylphosphino)-bis[N,N-dimethylaminobenzyl-C1,N] palladium(II)} (2a) and {trans-bis(triphenylphosphino)-chloro-[N,N-dimethylaminozyl-C]palladium(II)} (2b). Complex (1) crystallises in the space group P2ð1Þ=c with a ¼ 7:849ð1Þ A ° , b ¼ 15.635(3) A ° , c ¼ 8:352ð1Þ A ° , b ¼ 109:298, and Dcalc ¼ 1:895 g cm 23 for Z ¼ 2: Complexes (2a) and (2b) crystallize together in the space group P2(1)/n with a ¼ 9:964ð2Þ A ° , b ¼ 34:228ð5Þ A ° , c ¼ 18:127ð3Þ A ° , b ¼ 91:91 8, and Dcalc ¼ 1:439 g cm23. q 2004 Elsevier B.V. All rights reserved.