Abstract In this work, 29 compounds having the general formula: were prepared and their electron spectra, phase transition temperatures and mesomorphic properties determined. Compounds with Z= H, Br, I, NH2, CN, CHO, NCS, NCO, N3, COOH, CH2COOH, CH2Br, CH2CN, COCH3, CH2 [sbnd] CH2Cl, CH2 [sbnd] CH2CN, CH2CHClCN, CH [dbnd] CH2, C [tbnd] CH, CH [tbnd] CHCN, C (CH3)[dbnd] NOH, CH [dbnd] NOH, C (CH3)= NOC2H5, ...
