Graphical Contents Graphical Contents / European Journal of Chemistry 12 (1) (2021) iii-vi European Journal of Chemistry ISSN 2153-2249 (Print) / ISSN 2153-2257 (Online) – Copyright © 2021 Atlanta Publishing House LLC – Printed in the USA. This work is published and licensed by Atlanta Publishing House LLC – CC BY NC – Some Rights Reserved. https://dx.doi.org/10.5155/eurjchem.12.1.iii-vi.2112 European Journal of Chemistry A n I n t e r n a t i o n a l O p e n A c c e s s J o u r n a l Graphical Contents Volume 12, Issue 1, 31 March 2021 European Journal of Chemistry 12 (1) (2021) 1-12 A highly sensitive and selective spectrofluorimetric method for the determination of molybdenum at pico-trace levels in various matrices using N-(pyridin-2-yl)-quinoline-2-carbothioamide Muhammad Jamaluddin Ahmed, Ayesha Afrin and Muhammad Emdadul Haque European Journal of Chemistry 12 (1) (2021) 13-17 Synthesis of 1,2,3-triazole derivatives based on propargyl ester of a saturated single-basic carbonic acid and para-azidobenzoic acid Ibragimdjan Аbdugafurov Azizovich, Fazliddin Qirgizov Bakhtiyarovich and Ilhom Оrtikov Sobirovich R O O R: H, CH3, C2H5, C3H7, C4H9, C5H11 N3 HO O CuI Toluene R O O NN N HO O European Journal of Chemistry 12 (1) (2021) 18-22 Quick and simultaneous determination of caffeine and taurine in beverages using UPLC-ESI-MS Mohd Aftab Alam, Rayan Saud Al-Arifi, Abdulaziz Abdullah Al-Qarni, Abdullah Shaya Al-Dosseri and Fahad Ibrahim Al-Jenoobi O N N N N O Caffein OH S O O H2N Taurine 0 20 40 60 80 100 120 ED1 ED2 ED3 ED4 SD1 SD2 Ca ffe in e an d ta ur in e % o f l ab el c la im Brand codes % Caffeine % Taurine https://dx.doi.org/10.5155/eurjchem.12.1.iii-vi.2112 iv Graphical Contents / European Journal of Chemistry 12 (1) (2021) iii-vi 2021 – European Journal of Chemistry – CC BY NC – DOI: 10.5155/eurjchem.12.1.iii-vi.2112 European Journal of Chemistry 12 (1) (2021) 23-31 Halide bridged organophosphorus complexes of HgX2 (X: I, Br and Cl): Synthesis, structure and theoretical studies Jahangir Mondal, Amit Kumar Manna and Goutam Kumar Patra P + HgX2 CH3CN X: I (1), Br (2) and Cl (3) Hg Hg X X Ph3P PPh3 X X European Journal of Chemistry 12 (1) (2021) 32-36 Assessment of the iodine level of table salt from Senegalese households Amadou Diop, Rokhaya Guèye, Mamadou Baldé, Khadidiatou Thiam, Nassifatou Koko Tittikpina, Ousmane Niass, Serigne Omar Sarr, Bara Ndiaye and Yerim Mbagnick Diop European Journal of Chemistry 12 (1) (2021) 37-44 Synthesis, antimicrobial, antioxidant, and ADMET studies of quinoline derivatives Santhosha Sangapurada Mahantheshappa, Harishkumar Shivanna and Nayak Devappa Satyanarayan N Cl N NH2 N O HR1 O ClN N H O N Cl N H N Step-1 Step-2 Step-3 O Cl N Cl N H N O NR2 2 R1 R1 R1 R1 Cl O ClStep-4 H European Journal of Chemistry 12 (1) (2021) 45-51 Synthesis of metal organic framework (MOF-5) embedded cryogel composite and its application for the extraction and determination of cholesterol from milk samples Fouzia Chang, Najma Memon, Huma Shaikh, Ayaz Ali Memon, Shahabuddin Memon, Paras Aazadi Memon and Abdul Sattar Chang 21.01 20.39 21.98 11.58 64.95 0 10 20 30 40 50 60 70 80 90 100 Hexane Chloroform Carbon tetrachloride Ethyl acetate Mix-2 De so rp tio n (% ) Desorption solvents 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 270 280 290 300 310 320 330 340 350 Ab so rb an ce Wavelength (nm) Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Graphical Contents / European Journal of Chemistry 12 (1) (2021) iii-vi v 2021 – European Journal of Chemistry – CC BY NC – DOI: 10.5155/eurjchem.12.1.iii-vi.2112 European Journal of Chemistry 12 (1) (2021) 52-55 The structure of a confiscated street drug: 6-Monoacetyl morphine hydrochloride trihydrate - C19H22NO4Cl·3H2O Matthew R. Wood, Ivan Bernal and Roger A. Lalancette European Journal of Chemistry 12 (1) (2021) 56-59 Synthesis, characterization, and antimicrobial activity of 4-imidazolecarboxaldehyde thiosemicarbazone and its Pt(II) and Pd(II) complexes Mohammed Bahreldin Hussein, Muna Mahdi Mohammed, Abdalla Gobara, Asha Fadllallah Khaleel and Awad Salim Ibrahim Holy N HN N N H S NH2 2 Reflux / 7 h K2PdCl4 Cl2N HN N N H S NH2 N NH N H N S H2N Pd Reflux / 7 h K2PtCl4 Cl2N HN N N H S NH2 N NH N H N S H2N Pt European Journal of Chemistry 12 (1) (2021) 60-63 Rietveld refinement of the low temperature crystal structures of Cs2XSi5O12 (X = Cu, Cd and Zn) Anthony Martin Thomas Bell European Journal of Chemistry 12 (1) (2021) 64-68 Microwave assisted synthesis of some azo disperse dyes part 2: Eco-friendly dyeing of polyester fabrics by using microwave irradiation Mohamed Osman Saleh, Morsy Ahmed El-Apasery, Abdelhaleem Mostafa Hussein, Abu-Bakr Abdelhady El-Adasy and Magda Mohamed Kamel + N CH3 H3C O N N NH O N NN N O H N H2N N HR1 R1 R2 R2 0 5 10 15 20 25 10 20 30 40 50 60 K/ S Time (min) Dye1 Dye2 Dye3 Dye4 Dye5 Dye6 Dye7 Dye8 Dye9 vi Graphical Contents / European Journal of Chemistry 12 (1) (2021) iii-vi 2021 – European Journal of Chemistry – CC BY NC – DOI: 10.5155/eurjchem.12.1.iii-vi.2112 European Journal of Chemistry 12 (1) (2021) 69-76 Synthesis and detailed characterization of a newly synthesized chalcone, 3-(2,5-dimethoxyphenyl)-1-(naphthalen-2-yl)prop-2-en-1-one Madhu Kumar Dogganal Jayappa, Prabhuswamy Akhileshwari, Mandayam Anandalwar Sridhar, Lohith Tumakuru Nagarajappa, Shivegowda Nagaraju, Subrayachar Raghavendra and Manasa Dogganal Jayappa European Journal of Chemistry 12 (1) (2021) 77-80 Is it possible to differentiate between 2-phenylaminodihydro-1,3-thiazine from 2-phenyliminotetrahydro-1,3-thiazine by spectral methods? New glance to the old problem Alisher Eshimbetov, Shahobiddin Adizov, Inderpreet Kaur and Akhmed Reymov European Journal of Chemistry 12 (1) (2021) 81-85 Crystal structure of the sesquihydrate of dehydroepiandrosterone propan-2-ylidene hydrazone: Participation of the hydrazonyl nitrogen atoms as acceptors in the elaborate hydrogen bond scheme James Lewis Wardell and John Nicholson Low European Journal of Chemistry 12 (1) (2021) 86-108 MgO nanoparticles: Synthesis, characterization, and applications as a catalyst for organic transformations Harshal Dabhane, Suresh Ghotekar, Pawan Tambade, Shreyas Pansambal, Rajeshwari Oza and Vijay Medhane PrintField10: PrintField11: PrintField12: PrintField13: PrintField20: PrintField21: PrintField22: PrintField23: