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Crystal structure,thermal analysis and IR spectrometric investigation of l-tyrosine hydrazide diphosphate monohydrate
Affiliation:1. College of Science, Hunan Agricultural University, Changsha, Hunan, China;2. School of Information Engineering, Nanchang Institute of Technology, Nanchang, Jiangxi, China;3. Department of Mathematics and Statistics, University of New Brunswick, Fredericton, NB, Canada;1. School of Environmental & Municipal Engineering, North China University of Water Resources and Electric Power, ZhengZhou, He’nan 450011, People’s Republic of China;2. College of Chemistry & Chemical Engineering, YangZhou University, YangZhou, Jiangsu 225002, People’s Republic of China
Abstract:The monoclinic crystal structure of (C9H15N3O2)2P2O7·H2O denoted DLTHDP a = 14.626(1), b = 6.1990(2), c = 14.562(1) Å, β = 97.289(3)°, Z = 2, monoclinic P21, Dcal = 1.508, Dmes = 1.49 g cm−3] has been solved using direct methods and refined to a reliability factor R = 4.37% for 2079 independent reflections. The DLTHDP structure can be described by infinite polyanions P2O7·H2O]n4n organized in chains parallel to the b-direction and located at z = 1/2, alternating with organic cations associated in ribbons spreading along the a-direction. Multiple hydrogen bonds originating from amine, hydroxyl groups and water molecules donors Nsingle bondH…O(N) and O(W)single bondH…O] connect the different components of the lattice. The IR data of DLTHDP is reported and discussed according to the theoretical group analysis and by comparison with IR results of similar compounds. The coupled thermogravimetric analysis (TGA)–differential thermal analysis (DTA) thermal study shows the departure of one water molecule, confirming the hydrated character of this compound.
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