1,1′-Bis(N,N-dimethylamino)ferrocene,1,1′-bis(N,N-dimethylamino) cobaltocenium hexafluorophosphate and 1,1′-bis(N,N-dimethylamino)titanocene dichloride. Crystal structure of 1,1′-bis(N,N-dimethylamino)titanocene dichloride

摘要: Abstract A general method for the preparation of 1,1′-bis( N,N -dimethylamino)metallocenes is described, involving reaction -dimethylamino-cyclopentadienyllithium ( 1 -Li) with metal chlorides. 1,1′-Bis( -dimethylamino)ferrocene 2 ), -dimethylamino)cobaltocenium hexafluorophosphate 3 + PF 6 − ) and -dimethylamino)titanocene dichloride 4 have been synthesized in this way. The influence dimethylamino donor substituent has studied by means cyclic voltammetry. e.g., most negative redox potential E o −0.23 V (SCE)) so far reported a ferrocene derivative. structure 1,1-bis( determined X-ray crystallography. It crystallizes hexagonal plates space group C2/c Z = 4, 1301.4, b 647.2, c 1828.5 pm, β 98.81°). titanium atom does not lie exactly above centres cyclopentadienyl rings, CN bond from ring carbon C(1) to nitrogen very short (134.7 pm).