Cp2Ti{[OC(O)C5H4]Cr(CO)2NO]}2 and Cp2Ti{[(OC(O)C5H4]Cr(NO)2X}2 syntheses and spectra of chromium-titanium complexes bridged by carboxylate substituted cyclopentadienyl group

►Titanocene dicarboxylate Cp2Ti[(OC(O)C5H4)Cr(CO)2(NO)]2 was synthesized. ►Complexes Cp2Ti[(OC(O)C5H4)Cr(NO)2X]2 (X = Cl or I) were synthesized. ►Complex Cp2Ti[(OC(O)C5H4)W(CO)3CH3] was synthesized. ►13C chemical shifts assignments for CpCr(CO)2(NO) and Cp2Fe derivatives were made. ►Opposite correlation on the assignments of C(2,5) and C(3,4) of Cp ring was observed.