"Synthesis and Diagnosis New Metallotropic LCs from Organotin (IV) Comp" by Alaa Adnan Rashad, Hamsa Thamer et al.

Article Title

Synthesis and Diagnosis New Metallotropic LCs from Organotin (IV) Complex

Authors

Alaa Adnan Rashad, Department of Chemistry, College of Science, Al-Nahrain University,P.O. Box: 64021, Baghdad, Iraq,Follow
Hamsa Thamer, Department of Chemistry, College of Science, Al-Nahrain University,P.O. Box: 64021, Baghdad, Iraq,Follow
Alaa Mohammed, Department of Chemistry, College of Science, Al-Nahrain University,P.O. Box: 64021, Baghdad, Iraq,Follow
Mohammed H. Al-Mashhadani, Department of Chemistry, College of Science, Al-Nahrain University,P.O. Box: 64021, Baghdad, Iraq,Follow
Ali H. Jawad, Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, MalaysiaFollow
Emad Yousif, Department of Chemistry, College of Science, Al-Nahrain University,P.O. Box: 64021, Baghdad, Iraq,Follow

Document Type

Article

Abstract

Organotin (IV) complex is part of the organometallic chemistry and in recently decades have a variety of interesting and application used it. A new class of metallomesogens LC (A) Ph3Sn(VAL), (B) Bu3Sn(VAL), (C) Ph2Sn(VAL)2 and (D) Bu2Sn(VAL)2 was synthesis through the reaction of valsartan ligand with (di- or tri- butyl tin chloride salt) and (di- or tri- phenyl tin chloride salt) in methanol solvent. 1H NMR,119 Sn NMR, FTIR and CHN elemental analyses were measure and the liquid crystalline properties were study by POM. The mesophase in all organotin (IV) carboxylate complexes are thermotropic nematic phase. In complexes (A, C) the optical textures of A show a typical droplet texture and thread shape LC phase transition between (400-440⁰C) higher than mesophase textures in C between (230 -250⁰C). In complexes (B, D) the optical textures of B appearance a thread shape and the LC phase transition temperature between (200 -400⁰C) and in D thread shape and the transition temperature beginning up to 280⁰C. From a temperature of phase transition show that the complexes (C, D) are start liquid crystal mesophase in lower than complex (A, C) because effect of R-group and types which due to an asymmetric arrangement of the molecule and a geometry was calamitic in which the length of the molecule is major in compare with its diameter.

Keywords

Metallotropic LCs, organotin (IV), POM, thermotropic mesophase.

Recommended Citation

Rashad, Alaa Adnan; Thamer, Hamsa; Mohammed, Alaa; Al-Mashhadani, Mohammed H.; Jawad, Ali H.; and Yousif, Emad (2021) "Synthesis and Diagnosis New Metallotropic LCs from Organotin (IV) Complex," Al-Qadisiyah Journal of Pure Science: Vol. 26 : No. 1 , Article 16.
Available at: https://doi.org/10.29350/qjps.2021.26.1.1163