Alkali Metal Directed Assembly of Heterometallic Vv/M (M = Na, K, Cs) Coordination Polymers: Structures, Topological Analysis, and Oxidation Catalytic Properties

2013 ◽  
Vol 52 (15) ◽  
pp. 8601-8611 ◽  
Author(s):  
Samik Gupta ◽  
Marina V. Kirillova ◽  
M. Fátima C. Guedes da Silva ◽  
Armando J. L. Pombeiro ◽  
Alexander M. Kirillov
Keyword(s):  
Alkali Metal ◽  
Coordination Polymers ◽  
Catalytic Properties ◽  
Topological Analysis ◽  
Directed Assembly

ChemInform Abstract: Alkali Metal Fluorides Supported on Fluorinated γ-Alumina, Lewis Base, and Catalytic Properties.

ChemInform ◽  
2010 ◽  
Vol 23 (5) ◽  
pp. no-no
Author(s):  
T. BAIRD ◽  
A. BENDADA ◽  
G. WEBB ◽  
J. M. WINFIELD
Keyword(s):  
Alkali Metal ◽  
Catalytic Properties ◽  
Lewis Base ◽  
Metal Fluorides

Anion-directed assembly of lanthanide coordination polymers with SMMs properties based on a dihydrazone ligand

2018 ◽  
Vol 233 (1) ◽  
pp. 51-59
Author(s):  
Lina Zhang ◽  
Peigao Duan ◽  
Yang Liu ◽  
Jingxian Sun ◽  
Dan Zhao ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Single Molecule ◽  
Variable Temperature ◽  
Ac Susceptibility ◽  
Directed Assembly ◽  
Magnetization Measurement ◽  
Vital Role ◽  
Diffusion Method ◽  
Monoclinic Space Group ◽  
Space Group

AbstractFour new Ln(III)-based coordination polymers (CPs), [Eu(HL)Cl2(DMF)2]·(H2L) (1), [Dy(HL)Cl2(DMF)2]·(H2L) (2), [Er(HL)Cl2(DMF)(CH3OH)]·(DMF) (3) and [Yb(HL)Cl2(DMF)(H2O)]·(DMF) (4) (H2L=2,6-bis[(3-methoxysalicylidene)hydrazinocarbonyl]pyridine) have been synthesized through the reaction of Ln(III) chloride and H2L by using the vapour diffusion method. Interestingly, Cl−as a template agent plays a vital role in the formation of the target complexes. Single-crystal X-ray diffraction studies indicate that1and2are isostructural and crystallize in triclinic space groupP1̅, while complexes3and4are isostructural and crystallize in monoclinic space groupC2/c. Variable temperature magnetization measurement (χMT–T) demonstrates possible antiferromagnetic interactions in complex2. Alternating-current (ac) susceptibility measurement furthermore indicated frequency dependence for both the in-phase (χ′) and out-of-phase (χ″) components in2, suggesting that there is a slow relaxation behavior of the magnetization, which is typical of single-molecule magnets (SMMs). This is the first time that Ln(III) CPs based on such a dihydrazone ligand has been reported so far.

Structural and Catalytic Properties of the Alkali Metal Ion-Exchanged Y-Zeolites by 29Si and 27Al Solid-State NMR and FT-IR Spectroscopy

2005 ◽  
Vol 277-279 ◽  
pp. 708-719
Author(s):  
Chang Seop Lee ◽  
Hee Jung Lee ◽  
Sung Woo Choi ◽  
Jahun Kwak ◽  
Charles H.F. Peden
Keyword(s):  
Solid State ◽  
Alkali Metal ◽  
Photoelectron Spectroscopy ◽  
Metal Ion ◽  
Nmr Spectra ◽  
Catalytic Properties ◽  
Nox Reduction ◽  
29Si Nmr ◽  
Y Zeolites ◽  
X Ray

A series of cation exchanged Y-zeolites were prepared by exchanging cations with various alkali (M+, M= Li, Na, K, Cs) metals. The structural and catalytic properties of the alkali metal exchanged Y-zeolites have been investigated by a number of analytical techniques. Comparative elemental analyses were determined by an Energy Dispersive Spectroscopy X-ray (EDS), X-ray Photoelectron Spectroscopy (XPS), Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) and X-ray Fluorescence (XRF) before and after cation substitution. The framework and non-framework Al coordination and the Si/Al ratios of the Y-zeolites were investigated by MAS Solid-State Nuclear Magnetic Resonance (NMR) spectroscopy. The Al NMR spectra were characterized by two 27Al resonance signals at 12 and 59 ppm, indicating the presence of the non-framework and framework Al respectively. The intensities of these resonances were used to monitor the amount of the framework and non-framework Al species in the series of exchanged zeolites. The 29Si NMR spectra were characterized by four resonance signals at -79, -84, -90, and -95 ppm. Changing the alkali metal cations in the exchanged Y-zeolites significantly altered the extent of the octahedral/tetrahedral coordination and the Si/Al ratio. The Fourier Transform Infrared spectra of the CO2 adsorbed on to the exchanged Y-zeolites showed a low frequency shift, as the atomic number of the exchanged alkali metal increased. In addition, the catalytic activity of these samples for NOx reduction were tested in combination with a non-thermal plasma technique and interpreted based on the above structural and spectroscopic information.

scholarly journals Effects of various alkali metal cations on the synthesis, crystallization and catalytic properties of NKX-2 aluminophosphites

2019 ◽  
Vol 222 ◽  
pp. 81-86 ◽  
Author(s):  
Haruna Abdullahi ◽  
Ka-Lun Wong ◽  
Gin Keat Lim ◽  
Hussein Awala ◽  
Aurélie Vicente ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Catalytic Properties ◽  
Metal Cations ◽  
Alkali Metal Cations

Transition metal-directed assembly of diverse coordination polymers based on multifunctional ligand 2,4-dichloro-5-sulfamoylbenzoic acid

CrystEngComm ◽  
2013 ◽  
Vol 15 (42) ◽  
pp. 8483 ◽  
Author(s):  
Fangfang Zhao ◽  
Guangju Zhang ◽  
Huan Dong ◽  
Wenbin Ji ◽  
Lei Zhou ◽  
...  
Keyword(s):  
Transition Metal ◽  
Coordination Polymers ◽  
Directed Assembly ◽  
Multifunctional Ligand

Alkali metal cation exchange of HZSM-5 and the catalytic properties of the alkalized zeolites

1991 ◽  
Vol 68 (1) ◽  
pp. 31-39 ◽  
Author(s):  
C.P. Nicolaides ◽  
M. Wapiennik ◽  
K.I.G. Weiss ◽  
H. van den Akker ◽  
B. van Zalk ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Cation Exchange ◽  
Metal Cation ◽  
Catalytic Properties ◽  
Alkali Metal Cation

Synthesis, crystal structures and catalytic properties of two 1D cobalt(II) coordination polymers

2011 ◽  
Vol 37 (1) ◽  
pp. 17-23 ◽  
Author(s):  
Cui-huan Jiao ◽  
Cui-hong He ◽  
Jian-chen Geng ◽  
Guang-hua Cui
Keyword(s):  
Crystal Structures ◽  
Coordination Polymers ◽  
Catalytic Properties
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