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The transition metal-azo dye complexes have attracted attention in both fundamental and applied research due to their electronic and structural properties, particularly due to their potential to yield new compounds with diverse biological activities and anticancer agents. A novel square planar-trans-Pd(O,N)2 was synthesized with a high yield utilizing a one-pot approach employing (E)-methyl 2-((2-hydroxynaphthalen-1-yl)diazenyl)benzoate as the AZO-dye ligand. In order to analyze their structure and understand their properties. The desired complex was characterized using FT-IR, UV–Vis, NMR, and CHN-EA techniques. Subsequently, theoretical modeling of the complex was performed using MEP/MAC/NPA methodologies. Two methodologies were employed to monitor the coordination process of AZO-ligand with Pd(II): UV–Vis absorption and FT-IR spectrum analysis. The TD-DFT and DFT/IR behaviors were simultaneously assessed to compare the experimental results with theoretical predictions. Furthermore, both SC-XRD and DFT analysis demonstrated that the deprotonated phenolic diazene form of the AZO-ligand attached to the Pd(II) center by utilizing one nitrogen atom of the AZO-ligand and the ionic oxygen of the phenol. The SC-XRD analysis verified the presence of a slightly distorted square-planar geometry around the PdII center in the neutral trans-Pd(O,N)2 complex. All of the oxygen atoms in the complex participated in non-classical C-H….O hydrogen bonding, leading to the formation of novel edge-fused rings R22(24) and R22(12) synthons. These synthons create a 3D-network with a linked parallel matrix. Interestingly, Hirshfeld surface analysis (HSA) stimulation revealed many hot sites on the complex surface, confirming the formation of strong non-classical [C-H....O] interactions. From the observed docking behavior with the DNA, it can be concluded that the trans-Pd(O,N)2 showed superior binding compared to the free AZO-ligand. The results of this work are a contribution to the study of this class of metal complexes and their physicochemical properties and offer promising perspectives for the realization of new works.

Background: An estimated 17.8 million lives were lost in 2017 due to cardiovascular disease (CVD), resulting in a total of 330 million years of life lost and an additional 35.6 million years of disability. Numerous studies have shown the importance of education and awareness in promoting positive and long-lasting behavioral changes. This study aims to assess Syrians' awareness of cardiovascular disease (CVD) warning symptoms and risk factors and investigate further into the variables that contribute to this awareness. Methods: A cross-sectional survey was undertaken online between August 1 and 25, 2022, to examine Syrian individuals' awareness of cardiovascular disease risk factors and early warning signs. The study's questionnaire was constructed based on prior research, and the inclusion criteria for the sample were citizens of Syria over the age of 18 who currently reside in Syria. There were three categories of questions on the questionnaire: sociodemographics, an evaluation of CVD knowledge using both open- and closed-ended inquiries, and medical history and behavioral risk factors. Results: There were 1201 inquired participants; 728 (60.6%) were males, and 473 (39.5%) were females. Concerns about developing diabetes were reported by 45.8% (n=550), hypertension was feared by 54.0% (n=540), and 43.9% (n=572) of individuals, and heart disease was feared by 45.9% (n=572). The internet and social media platforms were the most common ways they learned about it. Closed-ended questions indicated that the majority of participants (n=1164, 94.9%) had recognized CVD risk factors, with smoking (95.2%), obesity (93.6%), cholesterol (91%), and hypertension (90.3%) being the most often reported risk factors. Close-ended questions regarding CVD warning indicators revealed that most participants (n=897, 74.7%) correctly identified the warning symptoms. However, in response to open-ended questions, most participants (n=478, 39.8%) did not identify CVD risk factors, as well only (n=291, 24.2%) did. In addition, open-ended questions concerning CVD warning signs indicated that more than half of the participants (n=680, 56.6%) had poor identification of the warning symptoms. The age group between 55 and 64 years had the greatest CVD risk factors, and education was related to greater knowledge of CVD risk factors (P-value