Article
Chemistry, Multidisciplinary
Maegan Dailey, Claire Besson
Summary: In this study, four polymorphs of LnPc(2) were selectively crystallized by the slow evaporation of saturated solutions, leading to the determination of 14 new structures including Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Er and Yb, and correction of previous misidentifications. The primary feature in all LnPc(2) polymorphs is columnar stacking based on parallel pi-pi interactions.
Article
Chemistry, Inorganic & Nuclear
Nurul F. Ghazali, Kuduva R. Vignesh, Wasinee Phonsri, Keith S. Murray, Peter C. Junk, Glen B. Deacon, David R. Turner
Summary: A series of mononuclear lanthanoidate complexes have been prepared and characterised, which can be used as precursors to obtain heterobimetallic complexes. Trinuclear heteroleptic complexes have also been obtained. Some compounds exhibit slow relaxation of magnetisation at low temperatures. The study shows that the structural changes from mononuclear to trinuclear lanthanoid complexes enhance their single molecule magnetic behavior.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Qing Miao, Rene Dekkers, Karthick Babu Sai Sankar Gupta, Mark Overhand, Rubin Dasgupta, Marcellus Ubbink
Summary: A hydrophilic rigid macrocyclic ligand was designed and synthesized for investigating the conformational dynamics of its complex with europium using NMR spectroscopy. The results showed that the complex exists in two conformers, with the twisted square antiprismatic one being favored. This ligand is suitable for developing rigid probes for paramagnetic NMR of proteins and is less likely to cause protein precipitation due to its hydrophilic nature.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Victor V. Verpekin, Oleg S. Chudin, Alexander D. Vasiliev, Alexander A. Kondrasenko, Aleksey M. Shor, Galina Burmakina, Dmitry Zimonin, Nikolai G. Maksimov, Anatoly Rubaylo
Summary: A series of trinuclear mu(3)-vinylidene ReFePt clusters were synthesized using two different approaches, and their molecular structures were characterized by X-ray diffraction and spectroscopic analysis, revealing isomerization upon dissolution. The redox properties of the clusters were also studied using electrochemical methods, and stable cation-radicals were characterized by EPR spectroscopy.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Zakiyeh Khoshkhan, Masoud Mirzaei, Hossein Eshtiagh-Hosseini, Mohammad Izadyar, Joel T. Mague, Maria Korabik
Summary: The successful hydrothermal synthesis of two inorganic-organic hybrid assemblies is reported in this paper. Characterizations reveal their structural features, formation mechanisms, and unique magnetic properties, showcasing their potential applications in materials science.
Article
Multidisciplinary Sciences
Michal Magott, Maria Brzozowska, Stanislaw Baran, Veacheslav Vieru, Dawid Pinkowicz
Summary: In this study, the authors report a novel design strategy for intermetallic nanomagnets, which exhibit magnetic memory effect originating from each individual molecule. They synthesized a nanomagnetic molecule based on a single Er-III center coordinated solely by three transition metal ions in a perfectly trigonal planar fashion. This research opens up a new avenue for the development of high-performance single-molecule magnets.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
TingYun Pai, Olaf Stefanczyk, Kunal Kumar, Corine Mathoniere, Barbara Sieklucka, Shin-Ichi Ohkoshi
Summary: The crystal engineering of octacyanidomolybdate(IV) ions and copper(II) complexes with different chelating ligands resulted in the formation of four compounds. The presence of Mo(v) to Cu(s) charge transfer bands in trinuclear molecules was confirmed through UV-Vis-NIR absorption spectroscopy. The photomagnetic effect was observed in some compounds.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Alokesh Hazari, Rosa M. Gomila, Antonio Frontera, Michael G. B. Drew, Ashutosh Ghosh
Summary: Two new trinuclear heterometallic complexes, [(CuL1)(2)Zn(N-3)(mu(1,3)-N-3)]·H2O (1) and [(CuL2)(2)Zn(N-3)(mu(1,3)-N-3)] (2), have been synthesized and characterized. The molecular structures of these complexes are different from their unreduced analogues, 1A and 1B, with differences rationalized through theoretical calculations. The presence of intramolecular spodium bonds and coordination of azide ions play key roles in the structural differences observed between the complexes.
Article
Chemistry, Inorganic & Nuclear
Santarupa Thakurta, Monami Maiti, Ray J. Butcher, Carlos J. Gomez-Garcia, Arshak A. Tsaturyan
Summary: A new trinuclear Ni(s) Schiff base complex was synthesized and characterized, showing a bent structure and weak antiferromagnetic coupling. The study revealed a linear correlation between the J value and certain angles, indicating a mechanism of exchange coupling through bridging groups.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yang-Yun Chu, Andres Garcia Alejo, Sergey L. Bud'ko, Kasuni Boteju, Smita Patnaik, Arkady Ellern, Marilu Perez Garcia, Aaron D. Sadow
Summary: The magnetic properties of 4f organometallic compounds stabilized by secondary Ln-H-Si and benzylic interactions were investigated. The compounds without a benzyl group have a larger ligand field splitting energy manifold. Doping DyR3 into LaR3 results in the crystal structure of the latter compound, and the resulting material shows hysteresis in magnetic measurements.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ri-Qin Xia, Ji Zheng, Rong-Jia Wei, Jiaxing He, Dong-Qin Ye, Ming-De Li, Guo-Hong Ning, Dan Li
Summary: By introducing the BODIPY group, a Cu-CTC with a high-lying singlet excited state for strong visible light absorption and long-lived triplet excited states was constructed, displaying a high molar extinction coefficient. The constructed Cu-CTC exhibited better photooxidation activity compared to the Cu-CTC without the BODIPY group.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Rong Luo, Chen-Ze Xie, Ming-Guang Chen, Hai-Yan Shi, Xiang-Jian Kong, Yu-Hua Fan, Feng Shao
Summary: A new family of trinuclear windwheel complexes were synthesized and characterized. Magnetic studies revealed their antiferromagnetic behavior and different magnetic anisotropies.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Li-Xin Wang, Xiao-Fan Wu, Xin-Xin Jin, Jia-Yi Li, Bing-Wu Wang, Ji-Yan Liu, Jing Xiang, Song Gao
Summary: The design and synthesis of high-spin Mn(II)-based single-molecule magnets (SMMs) have not been well developed compared to other first row transition metal complexes. In this study, four Mn(II) compounds with an oversaturated coordination number of 8 were successfully synthesized using a similar strategy that was previously successful for Fe(II), Co(II), and Fe(III) SMMs. Surprisingly, all of these Mn(II) compounds exhibited interesting slow magnetic relaxation behavior under an applied direct current field, despite having very small negative D values.
DALTON TRANSACTIONS
(2023)
Article
Biochemistry & Molecular Biology
William Meza-Morales, Yair Alvarez-Ricardo, Leidys L. Perez-Gonzalez, Rosario Tavera-Hernandez, Maria Teresa Ramirez-Apan, Ruben A. Toscano, Ruben Sanchez-Obregon, Marco A. Obregon-Mendoza, Raul G. Enriquez
Summary: This study reports the crystal structures of two homoleptic metal complexes of Dimethoxycurcumin with gallium and indium. The ligands in each complex exhibit different conformations, with the (DiMeOC)2-Ga complex showing two different conformers and the (DiMeOC)3-In complex exhibiting three different conformations. The (DiMeOC)2-Ga complex demonstrates higher cytotoxic activity against the K562 cell line compared to cisplatin.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Inorganic & Nuclear
Jana Jurakova, Jana Dubnicka Midlikova, Jakub Hruby, Andrii Kliuikov, Vinicius Tadeu Santana, Jan Pavlik, Jan Moncol', Erik Cizmar, Milan Orlita, Ivan Mohelsky, Petr Neugebauer, Denis Gentili, Massimiliano Cavallini, Ivan Salitros
Summary: Four pentacoordinate complexes have been synthesized and their structures determined. The magnetic properties of the compounds were investigated, and the relationship between geometry and orbital ordering was discussed. Theoretical calculations were in good agreement with experimental data. Wet lithographic technique was used to evaluate the processability of the complexes and the preparation of microstructured films.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Oncology
Mahasish Shome, Weimin Gao, Anna Engelbrektson, Lusheng Song, Stacy Williams, Vel Murugan, Jin G. Park, Yunro Chung, Joshua LaBaer, Ji Qiu
Summary: This study used protein microarrays to detect antibodies in the serum of lung adenocarcinoma (ADC), smoker controls (SMC), and benign nodule controls (BNC) patients, and found antimicrobial antibodies associated with ADC and BNC. These antibodies help distinguish malignant and benign nodules detected by CT scan and have the potential to reduce false positive rates.
CANCER EPIDEMIOLOGY BIOMARKERS & PREVENTION
(2023)
Article
Gastroenterology & Hepatology
Lusheng Song, Minkyo Song, Charles S. Rabkin, Yunro Chung, Stacy Williams, Javier Torres, Alejandro H. Corvalan, Robinson Gonzalez, Enrique Bellolio, Mahasish Shome, Joshua LaBaer, Ji Qiu, M. Constanza Camargo
Summary: Our study provides a comprehensive assessment of anti-H. pylori antibody profiles in gastric intestinal metaplasia (IM). The identified novel antibodies against target antigens, in addition to CagA, may play a role in the progression of IM. Specific H. pylori antibodies, along with other biomarkers, can help identify IM patients for surveillance.
JOURNAL OF GASTROENTEROLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ramees Peedika Paramban, Zhifang Guo, Glen B. Deacon, Peter C. Junk
Summary: Treatment of [Sm(DippForm)(2)(thf)(2)] with 1,3,5,7-cyclooctatetraene in toluene under reductive conditions leads to the formation of an inverse sandwich dinuclear complex [Sm-2(DippForm)(4)(COT)] (1). However, in THF, it generates [Sm(DippForm)(COT)(thf)(2)] (2) and [Sm(DippForm)(2)(O-C4H8-DippForm)(thf)] (3). Furthermore, 1 gives 2 and 3 upon treatment with THF.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Md Abdul Halim, Zhifang Guo, Glen B. Deacon, Peter C. Junk
Summary: This study demonstrates the preparation of divalent lanthanoid pseudo-Grignard reagents PhLnBr (Ln= Sm, Eu and Yb) by the oxidative addition of bromobenzene (PhBr) to lanthanoid metals in tetrahydrofuran (THF). The reaction of PhLnBr with bulky N,N'-bis(2,6-di-isopropylphenyl)formamidine (DippFormH) generates Ln(II) complexes, and the reaction with 3,5-diphenylpyrazole (Ph2pzH) leads to the formation of both divalent and trivalent complexes. The use of PhLnBr in this work leads to different outcomes compared to previous reactions with PhLnI.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Rajesh Deka, Sourav Dey, Zhifang Guo, Ray J. Butcher, Peter C. Junk, David R. Turner, Harkesh B. Singh, Glen B. Deacon
Summary: Due to the differences between lanthanoids and tellurium atoms, low-coordinate, monomeric lanthanoid tellurolate complexes have been difficult to synthesize compared to complexes with lighter group 16 elements. In a recent study, low-coordinate, monomeric lanthanoid tellurolate complexes were successfully synthesized using hybrid organotellurolate ligands containing N-donor pendant arms. The structures of these complexes were determined using single-crystal X-ray diffraction, and their electronic structures were investigated using DFT calculations.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zhifang Guo, Md Abdul. Halim, Victoria L. Blair, Glen B. Deacon, Peter C. Junk
Summary: This paper describes a novel and simple method to synthesize lanthanoid(III) diiodide formamidinates through direct reaction of lanthanoid metals with equimolar amounts of iodine and a formamidine under ultrasonication. The products were identified by X-ray crystallography and all the trivalent complexes were found to be stable to rearrangement.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Angus C. G. Shephard, Aymeric Delon, Sylviane Chevreux, Agathe Martinez, Zhifang Guo, Glen B. Deacon, Gilles Lemercier, Nathan McClenaghan, Gediminas Jonusauskas, Peter C. Junk, Florian Jaroschik
Summary: New divalent ansa-octaphenyllanthanocenecomplexes were synthesized through reductive dimerization of 1,2,3,4-tetraphenylfulvene, and their structures and spectroscopic properties were compared to unbridged octaphenyl and decaphenyl sandwich complexes. The reductive dimerization of fulvenes using low-valent metal precursors is a direct method for accessing ethylene-bridged metallocenes. In this work, a new synthesis of the unsubstituted exocyclic 1,2,3,4-tetraphenylfulvene and its characterization, as well as the synthesis of divalent ansa-octaphenylmetallocenes with different lanthanoid metals, were described. The luminescence properties of one of the complexes were also studied.
INORGANIC CHEMISTRY
(2023)
Article
Crystallography
Shalini Rangarajan, Owen A. Beaumont, Zhifang Guo, Maravanji S. Balakrishna, Glen B. Deacon, Victoria L. Blair
Summary: Three organic mercury complexes with different structures and bonding modes were obtained through reactions with different ligands.
Article
Chemistry, Inorganic & Nuclear
Ramees Peedika Paramban, Zhifang Guo, Glen B. Deacon, Peter C. Junk
Summary: This paper investigates the interaction between divalent [Sm(DippForm)(2)(thf)(2)] and substrates containing azo linkages. It is found that treatment with trans-azobenzene results in the formation of mononuclear or dinuclear complexes, as well as [Sm(DippForm)(3)]. Moreover, the reaction of [Sm(DippForm)(2)(thf)(2)] with 1H-1,2,3-benzotriazole yields a trivalent samarium complex containing benzotriazolate.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Ruchika Ojha, Peter C. Junk, Alan M. Bond, Glen B. Deacon
Summary: Pt-IV coordination complexes were synthesized by oxidizing the antitumor agent [Pt-II(p-BrC6F4)NCH2CH2NEt2}Cl(py)]. Experimental data showed that excess H2O2 and elevated temperature favored the oxidation of the ligand, while a smaller amount of H2O2 at room temperature favored the oxidation of the metal, resulting in the formation of platinum(IV) complexes.
Article
Biochemistry & Molecular Biology
Vidushi P. Vithana, Zhifang Guo, Glen B. Deacon, Peter C. Junk
Summary: Complexes of alkali metals with carboxylate ions were prepared and their structures were determined. The coordination polymers exhibited a variety of carboxylate-binding modes in different metal complexes.
Article
Chemistry, Multidisciplinary
Josh Moon, Zhifang Guo, Owen A. Beaumont, Sophie Hamilton, Guillaume Bousrez, Eleanor Mottram, Jun Wang, Anthony E. Somers, Glen B. Deacon, Peter C. Junk
Summary: Rare earth(III) 4-hydroxybenzoato (4hob) complexes were prepared in water and characterized by X-ray diffraction. Different structures were observed for La and Ce complexes, while Y complex showed good anticorrosion properties. The La, Ce, and Y aqua complexes exhibited better corrosion inhibition than cerium(III) salicylate. Replacement of coordinated water by bpy improved the anticorrosion performance for La and Y complexes.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhifang Guo, Glen B. Deacon, Peter C. Junk
Summary: A mixture of bismuth compounds in different oxidation states was obtained by the reaction of praseodymium metal with tris(pentafluorophenyl)bismuth and bulky N,N'-bis(2,6-diisopropylphenyl)formamidine in tetrahydrofuran. Similar reactions also resulted in the formation of two similar compounds.
DALTON TRANSACTIONS
(2023)
