Syntheses, structures, and catalytic properties of two arene-ruthenium(II) complexes bearing N-(2-pyridinyl)aminodiphenylphosphine sulfide ligands

2018 ◽  
Vol 73 (3-4) ◽  
pp. 161-166
Author(s):  
Fule Wu ◽  
Jiling Gu ◽  
Xin Chen ◽  
Ai-Quan Jia ◽  
Qian-Feng Zhang
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Single Crystal ◽  
Crystal Structures ◽  
Catalytic Properties ◽  
Transfer Hydrogenation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sulfide Ligands

AbstractTreatment of [(arene)Ru(μ-Cl)Cl]2with Ph2P(S)NH(2-py) in the presence or absence of base gave two arene-ruthenium(II) complexes [(η6-p-cymene)Ru{κ2-N,N-Ph2P(S)N(2-py)}Cl] (1) and [(η6-benzene)Ru{κ1-N-Ph2P(S)NH(2-py)}Cl2] (2), which have been characterized by infrared, nuclear magnetic resonance spectroscopies, and mass spectrometry along with microanalyses. Crystal structures of Ph2P(S)NH(2-py) · ¼C6H14,1and2· ½CH2Cl2were determined by single-crystal X-ray diffraction. Two arene-ruthenium(II) complexes were tested as precatalysts for the transfer hydrogenation of acetophenone to give 1-phenyl ethanol.

scholarly journals Ba3CrN3H: A New Nitride-Hydride with Trigonal Planar Cr4+

2018 ◽  
Author(s):  
Nathaniel W. Falb ◽  
Jennifer N. Neu ◽  
Tiglet Besara ◽  
Jeffrey B. Whalen ◽  
David J. Singh ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Single Crystal ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray ◽  
Crystal Synthesis

Single crystal synthesis of a new nitride-hydride Ba3CrN3H. X-ray diffraction, nuclear magnetic resonance, and bond-valance sum and density functional theory calculations confirmed the presence and location of the anionic hydrogen in this compound.

scholarly journals Synthesis and Catalytic Properties of Novel Ruthenacarboranes Based on nido-[5-Me-7,8-C2B9H10]2− and nido-[5,6-Me2-7,8-C2B9H9]2− Dicarbollide Ligands

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1409
Author(s):  
Ivan D. Grishin ◽  
Anastasiya M. Zimina ◽  
Sergey A. Anufriev ◽  
Nadezhda A. Knyazeva ◽  
Alexander V. Piskunov ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Redox Potential ◽  
Single Crystal ◽  
Esr Spectroscopy ◽  
Catalytic Properties ◽  
Methyl Groups ◽  
Redox Potentials ◽  
X Ray Diffraction ◽  
New Approach ◽  
X Ray

The effect of methyl substituents in the lower belt of dicarbollide ligands on the redox potential of ruthenacarboranes based thereof, as well as the ability of the metallacarboranes obtained to catalyze radical polymerization with atom transfer were studied. For this purpose, a new approach to the synthesis of closo-ruthenacarboranes based on substituted dicarbollide ligands was developed and six new complexes 3,3-(Ph2P(CH2)4PPh2)-3-H-3-Cl-9-Me-12-X-closo-3,1,2-RuC2B9H9, 3,3,8-(Ph2P(CH2)4PPh-m-(C6H4-о))-3-Cl-9-Me-12-X-closo-3,1,2-RuC2B9H8 and 3,3,4,8-(Ph2P(CH2)4P-m-(C6H4-о)2)-3-Cl-9-Me-9-X-closo-3,1,2-RuC2B9H7 (X = H, Me) were synthetized and characterized by single crystal X-ray diffraction, NMR and ESR spectroscopy and MALDI TOF mass-spectrometry. Comparison of the values of the redox potentials of the synthesized ruthenium complexes in 1,2-dichloroethane with the values previously found for the corresponding ruthenacarboranes based on the parent dicarbollide anion showed that the introduction of methyl substituents into the carborane cage led to a decrease in the redox potentials of the complexes, which made them more preferable catalysts for ATRP. Test experiments on the polymerization of MMA showed that the synthesized ruthenacarboranes were effective catalysts for ATRP, the most active being the complex with two methyl groups and two ortho-phenylenecycloboronated fragments.

scholarly journals Ba3CrN3H: A New Nitride-Hydride with Trigonal Planar Cr4+

2018 ◽  
Author(s):  
Nathaniel W. Falb ◽  
Jennifer N. Neu ◽  
Tiglet Besara ◽  
Jeffrey B. Whalen ◽  
David J. Singh ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Single Crystal ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
X Ray Diffraction ◽  
Functional Theory ◽  
X Ray ◽  
Crystal Synthesis

Single crystal synthesis of a new nitride-hydride Ba3CrN3H. X-ray diffraction, nuclear magnetic resonance, and bond-valance sum and density functional theory calculations confirmed the presence and location of the anionic hydrogen in this compound.

scholarly journals Synthesis and Structure Elucidation of N′-(4-Methoxybenzylidene)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carbohydrazide

Molbank ◽  
10.3390/m1034 ◽  
2018 ◽  
Vol 2018 (4) ◽  
pp. M1034 ◽  
Author(s):  
Mohammad Alotaibi ◽  
Hanan Mohamed ◽  
Bakr Abdel-Wahab ◽  
Amany Hegazy ◽  
Benson Kariuki ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Single Crystal ◽  
Mass Spectroscopy ◽  
Structure Elucidation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acid Catalyzed ◽  
Nuclear Magnetic

N′-(4-Methoxybenzylidene)-5-methyl-1-phenyl-1H-1,2,3-triazole-4-carbohydrazide (3) was synthesized in a yield of 88% from an acid-catalyzed reaction of 5-methyl-1-phenyl-1H-1,2,3- triazole-4-carbohydrazide and 4-methoxybenzaldehyde in ethanol under reflux for 2.5 h. The structure of 3 was confirmed by the data obtained from infrared, nuclear magnetic resonance, mass spectroscopy, single crystal X-ray diffraction, and microanalysis.

scholarly journals Exploring the Structural Chemistry of Pyrophosphoramides: N,N′,N″,N‴-Tetraisopropylpyrophosphoramide

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 149-163
Author(s):  
Duncan Micallef ◽  
Liana Vella-Zarb ◽  
Ulrich Baisch
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Nmr Spectroscopy ◽  
Ir Spectroscopy ◽  
Room Temperature ◽  
Intermolecular Hydrogen Bonding ◽  
X Ray Diffraction ◽  
X Ray

N,N′,N″,N‴-Tetraisopropylpyrophosphoramide 1 is a pyrophosphoramide with documented butyrylcholinesterase inhibition, a property shared with the more widely studied octamethylphosphoramide (Schradan). Unlike Schradan, 1 is a solid at room temperature making it one of a few known pyrophosphoramide solids. The crystal structure of 1 was determined by single-crystal X-ray diffraction and compared with that of other previously described solid pyrophosphoramides. The pyrophosphoramide discussed in this study was synthesised by reacting iso-propyl amine with pyrophosphoryl tetrachloride under anhydrous conditions. A unique supramolecular motif was observed when compared with previously published pyrophosphoramide structures having two different intermolecular hydrogen bonding synthons. Furthermore, the potential of a wider variety of supramolecular structures in which similar pyrophosphoramides can crystallise was recognised. Proton (1H) and Phosphorus 31 (31P) Nuclear Magnetic Resonance (NMR) spectroscopy, infrared (IR) spectroscopy, mass spectrometry (MS) were carried out to complete the analysis of the compound.

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