Structural Comparisons of Silver(I)Complexes of Third-Generation Ligands Built from Tridentate(o-C6H4[CH2OCH2C(pz)3]2)versus Bidentate Poly(1-pyrazolyl)methane Units(o-C6H4[CH2OCH2CH(pz)2]2)(pz = Pyrazolyl Ring)

摘要

The new bitopic,bis(1-pyrazolyl)methane-based ligand o-C6H4[CH2OCH2CH(pz)2]2(L~2,pz = pyrazolyl ring)is prepared from the reaction of(pz)2CHCH2OH(obtained from the reduction of(pz)2CHCOOH with BH3·S(CH3)2)with NaH,followed by the addition of alpha,alpha'-dibromo-o-xylene.The reaction of L~2 with AgPF6 or AgO3SCF3 yields {o-C6H4[CH2-OCH2CH(pz)2]2(AgPF6)}_n or {o-C6H4[CH2OCH2CH(pz)2]2(AgO3SCF3)}_n,respectively.Both compounds in the solid state have tetrahedral silver(I)centers arranged in a 1D coordination polymer network.The analogous ligand based on tris(1-pyrazolyl)methane units,o-C6H4[CH2OCH2C(pz)3]2(L~3),reacts with AgO3SCF3 to form a similar coordination polymer,{o-C6H4[CH2OCH2C(pz)3]2(AgO3SCF3)}_b.In this case,each tris(pyrazolyl)methane unit in L~3 adopts the kappa~2-kappa~0 bonding mode.Crystallization of a 3:1 mixture of AgO3SCF3 and L~3 yields {o-C6H4[CH2OCH2C(pz)3]2(AgO3-SCF3)2}_n,in which the tris(1-pyrazolyl)methane units adopt a kappa~2-kappa~1 coordination mode.