0000000000323414
AUTHOR
Hessa H. Al-rasheed
showing 12 related works from this author
Molecular and supramolecular structures of self-assembled Cu(II) and Co(II) complexes with 4,4’-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-…
2020
Abstract The molecular and supramolecular structures of [Cu(PTM)Cl2]∗0.75MeOH (1), [Co(PTM)Cl2]; (2A) and [Co(PTM)Cl2(EtOH)]; (2B) complexes, where PTM is 4,4’-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-diyl]dimorpholine, were presented. In complexes 1 and 2A, the Cu(II) and Co(II) are tetra-coordinated with a distorted tetrahedral coordination environment. In case of complex 2B, an additional ethanol molecule is found coordinated with Co(II) leading to a highly distorted penta-coordinated Co(II) complex. In all cases, the PTM ligand is acting as a bidentate NN-chelate. Hirshfeld surface analysis indicated the importance of H⋯H (49.0–55.1%), Cl⋯H (18.8–20.5%) and O⋯H (8.3–9.9%) co…
Synthesis and Solid-State X-ray Structure of the Mononuclear Palladium(II) Complex Based on 1,2,3-Triazole Ligand
2022
Herein, we described the synthesis and X-ray crystal structure of the new [Pd(3)2Cl2] complex with 1,2,3-triazole-based ligand (3). In the unit cell, there are two [Pd(3)2Cl2] molecules, and the asymmetric unit comprised half of this formula due to the presence of an inversion symmetry element at the Pd(II) center. The monoclinic unit cell volume is 1327.85(6) Å3, with crystal parameters of a = 10.7712(2) Å, b = 6.8500(2) Å, and c = 18.2136(6) Å, while β = 98.851(2)°. The structure comprised two trans triazole ligand units coordinated to the Pd(II) ion via one of the N-atoms of the triazole moiety. In addition, the Pd(II) is further coordinated with two tran…
Synthesis, structure and in vitro anticancer activity of Pd(II) complexes of mono- and bis-pyrazolyl-s-triazine ligands
2020
Abstract The square planar complexes [Pd(MPT)Cl2] (1) and [Pd(BPT)Cl]ClO4 (2) were synthesized by the reaction of the 4,4′-(6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-diyl)dimorpholine (MPT) and N-methyl-N-phenyl-4,6-di(1H-pyrazol-1-yl)-1,3,5-triazin-2-amine (BPT) ligands with PdCl2 (1:1) in acetone under thermal conditions, respectively. In complex 1, the Pd(II) ion is coordinated with the MPT ligand as a bidentate NN-chelate, augmented with two chloride ligands in cis positions. In complex 2, the Pd(II) ion is coordinated with the BPT ligand as a tridentate N-chelate in a pincer fashion, together with one chloride ligand. Hirshfeld analysis indicated that complex 1 is packed with…
[3 + 2] Cycloadditions in Asymmetric Synthesis of Spirooxindole Hybrids Linked to Triazole and Ferrocene Units: X-ray Crystal Structure and MEDT Stud…
2022
Derivatization of spirooxindole having triazole and ferrocene units was achieved by the [3 + 2] cycloaddition (32CA) reaction approach. Reacting the respective azomethine ylide (AY) intermediate generated in situ with the ethylene derivative produced novel asymmetric cycloadducts with four contiguous asymmetric carbons in an overall high chemical yield with excellent regioselectivity and diastereoselectivity. X-Ray single-crystal structure analyses revealed, with no doubt, the success of the synthesis of the target compounds. The 32CA reaction of AY 5b with ferrocene ethylene 1 has been studied within MEDT. This 32CA reaction proceeds via a two-stage one-step mechanism involving a high asyn…
Synthesis and Characterizations of Novel Isatin-s-Triazine Hydrazone Derivatives : X-ray Structure, Hirshfeld Analysis and DFT Calculations
2023
A novel series of isatin-s-triazine hydrazone derivatives has been synthesized and reported herein. The synthetic methodology involved the reaction of s-triazine hydrazine precursors with isatin derivatives in the presence of CH3COOH as a catalyst and EtOH as solvent to afford the corresponding target products 6a-e in high yields and purities. The characterization data obtained from elemental analysis, FT-IR, NMR (1H- and 13C-) were in full agreement with the expected structures. Furthermore, an X-ray single crystal diffraction study of one of the target s-triazine hydrazone derivatives, 6c confirmed the structure of the desired compounds. It crystallized in the triclinic crystal system and…
Molecular and supramolecular structures of self-assembled Cu(II) and Co(II) complexes with 4,4’-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-…
2020
The molecular and supramolecular structures of [Cu(PTM)Cl2]*0.75MeOH (1), [Co(PTM)Cl2]; (2A) and [Co(PTM)Cl2(EtOH)]; (2B) complexes, where PTM is 4,4’-[6-(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazine-2,4-diyl]dimorpholine, were presented. In complexes 1 and 2A, the Cu(II) and Co(II) are tetra-coordinated with a distorted tetrahedral coordination environment. In case of complex 2B, an additional ethanol molecule is found coordinated with Co(II) leading to a highly distorted penta-coordinated Co(II) complex. In all cases, the PTM ligand is acting as a bidentate NN-chelate. Hirshfeld surface analysis indicated the importance of H⋯H (49.0–55.1%), Cl⋯H (18.8–20.5%) and O⋯H (8.3–9.9%) contacts in…
CCDC 1998256: Experimental Crystal Structure Determination
2020
Related Article: Saied M. Soliman, Matti Haukka, Hessa H. Al-Rasheed, Ayman El-Faham|2020|J.Mol.Struct.|1219|128584|doi:10.1016/j.molstruc.2020.128584
CCDC 2203624: Experimental Crystal Structure Determination
2023
Related Article: Hessa H. Al-Rasheed, Matti Haukka, Saied M. Soliman, Abdullah Mohammed Al-Majid, M. Ali, Ayman El-Faham, Assem Barakat|2022|Crystals|12|1335|doi:10.3390/cryst12101335
CCDC 1998456: Experimental Crystal Structure Determination
2020
Related Article: Jamal Lasri, Hessa H. Al-Rasheed, Ayman El-Faham, Matti Haukka, Nael Abutaha, Saied M. Soliman|2020|Polyhedron|187|114665|doi:10.1016/j.poly.2020.114665
CCDC 1998255: Experimental Crystal Structure Determination
2020
Related Article: Saied M. Soliman, Matti Haukka, Hessa H. Al-Rasheed, Ayman El-Faham|2020|J.Mol.Struct.|1219|128584|doi:10.1016/j.molstruc.2020.128584
CCDC 2203623: Experimental Crystal Structure Determination
2023
Related Article: Hessa H. Al-Rasheed, Matti Haukka, Saied M. Soliman, Abdullah Mohammed Al-Majid, M. Ali, Ayman El-Faham, Assem Barakat|2022|Crystals|12|1335|doi:10.3390/cryst12101335
CCDC 1998457: Experimental Crystal Structure Determination
2020
Related Article: Jamal Lasri, Hessa H. Al-Rasheed, Ayman El-Faham, Matti Haukka, Nael Abutaha, Saied M. Soliman|2020|Polyhedron|187|114665|doi:10.1016/j.poly.2020.114665