Conductometric Studies of the Thermodynamics for Complexation of 1,1-Diethyl-3-(4-methoxybenzoyl)thiourea and Cobalt(II) Cation in Aqueous Binary Mixtures of Polar Organic Solvents

Suhud, Khairi; Heng, Lee Yook; Rezayi, Madjid; Al‐abbasi, Aisha A.; Hasbullah, Siti Aishah; Ahmad, Musa; Kassim, Mohammad B.

doi:10.1007/s10953-015-0308-2

Cited by 7 publications

(7 citation statements)

References 27 publications

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“…. The maximum value of stability constant, log 10 K f , = 3.31 for the [CoL 3 ] complex, was observed for the MeCN-DCM (20:80%) binary solvent system at 298.15 K. Thermodynamic parameters for the [CoL 3 ] complex formation showed that, in most mixed solvent systems, the [CoL 3 ] complexes were entropy stabilized while enthalpy has a destabilizing effect [87].…”

Section: Metal Complexesmentioning

confidence: 97%

Recent developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3-(substituted) thioureas

et al. 2016

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1-(Acyl/aroyl)-3-(substituted)thioureas are privileged architectures that have received remarkable attention of researchers in view of their variable topological aspects, binding modes and broad spectrum promising pharmacological properties. Reactivity of acyl thiourea derivatives has presented various organic transformations into other demanding scaffolds and this is an attractive strategy for synthetic chemists to access heterocyclic cores. Multiple binding sites make them flexible ligands for complexation with transition metals thus occupying a distinct position in coordination chemistry. 1-(Acyl/aroyl)-3-(substituted)thioureas have also emerged as attractive candidates in various fields such as ion sensors, corrosion inhibitors, molecular electronics, in metal extraction and in pharmaceuticals. The medicinal chemistry of this organo-sulfur framework and the derived metal complexes has witnessed fantastic progress in the current era. In continuation of our efforts to compile data on the structural aspects and numerous applications of 1-(acyl/aroyl)-3-(substituted)thiourea analogs, continuous advances have prompted us to present an overview of the last 2 years literature on this exciting family of compounds through this review article.

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Section: Metal Complexesmentioning

confidence: 97%

Recent developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3-(substituted) thioureas

et al. 2016

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“…Kajian pengkompleksan dapat dijalankan melalui pelbagai kaedah, seperti spektroskopi NMR (Misra et al 2009), spektrofotometri (Zhang et al 2015) dan konduktometri (Suhud et al 2015). Walaupun kaedah tersebut mempunyai ketepatan pengukuran yang tinggi, kaedah spektrofluorimetri memaparkan kelebihan yang lebih unik iaitu sifat kepekaan yang sangat tinggi (Granadero et al 2010).…”

Section: Pengenalanunclassified

“…Bagi penghasilan ion kompleks, ligan harus menggantikan pelarut secepat mungkin pada petala pensolvatan pertama kation, atau kation harus menggantikan molekul pelarut dengan ligan. Perubahan pada kekutuban pelarut akan mempengaruhi sifat pengikatan ligan (Kolusheva et al 2012 (Suhud et al 2015).…”

Section: Kesan Komposisi Pelarut H 2 O-etoh Terhadap Pengkompleksan Aunclassified

Kajian Pengkompleksan Sebatian Bis-Tiourea dengan Ion Aluminium sebagai Ionofor dalam Pembangunan Sensor Ion Potensiometri

Kook¹,

Ngah²,

Sapari³

et al. 2019

JSM

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Sebatian terbitan tiourea telah banyak digunakan sebagai ionofor untuk merkuri, kadmium, kuprum, plumbum dan ferum (III) dalam bidang sensor kimia. Namun, penggunaan sebatian tiourea sebagai ionofor aluminium masih tidak banyak dilaporkan. Dalam kajian ini, satu sebatian bis-tiourea baharu 1,1'-[(metilazandiyil)bis(etana-2,1-diyil)]bis[3-(naftalen-1-yil)tiourea] ACH telah disintesis dan dicirikan dengan menggunakan spektroskopi 1H, 13C-resonans magnetik nukleus, spektroskopi inframerah dan spektrometri jisim. Untuk menilai dan menentusah kesesuaian sebatian ACH sebagai ionofor aluminium, kajian pengkompleksan antara ligan ACH dengan ion aluminium dalam komposisi pelarut H 2 O-EtOH yang berbeza melalui kaedah spektrofluorimetri telah dijalankan. Antara lima jenis komposisi pelarut, hanya pelarut 25%H 2 O-75%EtOH menunjukkan pembentukan kompleks. Nisbah stoikiometri bagi ion kompleks yang terbentuk antara ligan ACH dengan ion Al 3+ ialah 3:1 dengan formula [Al(ACH) 3 ] 3+ dan nilai pK a yang diperoleh ialah 5.10±0.01. Struktur ion kompleks [ACH-Al] 3+ dengan stokoimetri 1:1 juga telah dioptimumkan melalui pengiraan teori fungsi ketumpatan. Kedua-dua atom sulfur daripada kumpulan berfungsi bis-tiourea didapati merupakan tapak aktif yang terlibat dalam proses pengkompleksan dan geometri separa rongga ditunjukkan pada ligan ACH untuk berkoordinat dengan ion Al 3+. Nilai negatif yang rendah pada tenaga pengikatan [ACH-Al] 3+ , iaitu-5.560 × 10 6 kJ/mol juga memaparkan kestabilan ion kompleks yang kuat. Sebagai kesimpulan, sebatian ACH adalah sesuai digunakan sebagai ionofor aluminium yang baharu dalam sensor ion potensiometri. Kata kunci: 1,1'-[(metilazandiyil)-bis(etana-2,1-diyil)]bis[3-(naftalen-1-yil)tiourea]; kajian pengkompleksan; pencirian sebatian bis-tiourea; pengiraan teori fungsi ketumpatan

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“…Benzoylthiourea compounds exhibit anti-inflammatory (Brachmachari & Das, 2012), anti-cancer, anti-diabetic and anti-virus activity (Kovačková et al, 2011), and have applications as ionic sensors (Suhud et al 2015b) and pharmaceutical drugs (Watson et al, 2000). Benzoylthiourea molecules containing thioamide (NH-C S) and carbonyl (C O) electron-rich donating groups facilitate the formation of coordination bonds with metal ions such as Co 3+ (Tan et al, 2014), Ru 2+ (Małecki & Nycz, 2013), Ag + (Isab et al, 2010) and Ni 2+ (Arslan et al, 2006).…”

Section: Chemical Contextmentioning

confidence: 99%

Crystal structure of 4-methoxy-N-(piperidine-1-carbonothioyl)benzamide

et al. 2017

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In the title compound, C14H18N2O2S, the piperidine ring has a chair conformation. Its mean plane is twisted with respect to the 4-methoxybenzoyl ring, with a dihedral angle of 63.0 (3)°. The central N—C(=S)—N(H)—C(=O) bridge is twisted with an N—C—N—C torsion angle of 74.8 (6)°. In the crystal, molecules are linked by N—H...O and C—H...O hydrogen bonds, forming chains along thec-axis direction. Adjacent chains are linked by C—H...π interactions, forming layers parallel to theacplane. The layers are linked by offset π–π interactions [intercentroid distance = 3.927 (3) Å], forming a supramolecular three-dimensional structure.

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Conductometric Studies of the Thermodynamics for Complexation of 1,1-Diethyl-3-(4-methoxybenzoyl)thiourea and Cobalt(II) Cation in Aqueous Binary Mixtures of Polar Organic Solvents

Cited by 7 publications

References 27 publications

Recent developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3-(substituted) thioureas

Recent developments in chemistry, coordination, structure and biological aspects of 1-(acyl/aroyl)-3-(substituted) thioureas

Kajian Pengkompleksan Sebatian Bis-Tiourea dengan Ion Aluminium sebagai Ionofor dalam Pembangunan Sensor Ion Potensiometri

Crystal structure of 4-methoxy-N-(piperidine-1-carbonothioyl)benzamide

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