Aliphatic Amine Mediated Assembly of [M6(mna)6] (M = Cu/Ag) into Extended Two-dimensional Structures: Synthesis, Structure and Lewis Acid Catalytic Studies

2021 ◽  
Author(s):  
Srinivasan Natarajan ◽  
Ajay Jana ◽  
Anupam Sarkar
Keyword(s):  
Lewis Acid ◽  
Aliphatic Amine ◽  
Layered Compounds ◽  
Two Dimensional

Two new two-dimensional layered compounds, [{Ag6(2-mna)6Cd(Hen)2}{Cd(en)22H2O}(H2O)8], I, and [{M6(2-mna)6Cd(Hen)2}(H2en)(H2O)10], II, (M = Cu and Ag) was prepared employing [M6-(Hmna)6]-cluster as the starting metalloligand. The metalloligand was prepared and characterized before...

Exfoliated single molecular layers of Mn0.8PS3 and Cd0.8PS3

2005 ◽  
Vol 20 (5) ◽  
pp. 1107-1112 ◽  
Author(s):  
R.F. Frindt ◽  
D. Yang ◽  
P. Westreich
Keyword(s):  
Ion Exchange ◽  
Structure Factor ◽  
Single Layer ◽  
Layered Compounds ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vacancy Ordering ◽  
Diffraction Patterns ◽  
Molecular Layers

The layered compounds MnPS3 and CdPS3 were exfoliated to form single molecular layers of Mn0.8PS3 and Cd0.8PS3 in suspension in water by ion exchange. The x-ray diffraction patterns of the two single-layer suspensions showed profound differences in some of the Bragg peaks, and we demonstrated that the differences are not due to the quality or size of the single layers, but are caused by structure factor modulations of the Warren tail for two-dimensional systems. We also demonstrated that the Cd or Mn vacancies generated in the exfoliation process are not ordered at long range, in contrast to an earlier report of vacancy ordering on intercalated MnPS3.

Geoinspired synthetic chrysotile nanotubes

2006 ◽  
Vol 21 (11) ◽  
pp. 2711-2725 ◽  
Author(s):  
N. Roveri ◽  
G. Falini ◽  
E. Foresti ◽  
G. Fracasso ◽  
I.G. Lesci ◽  
...  
Keyword(s):  
Quantum Wires ◽  
Layered Compounds ◽  
Two Dimensional ◽  
Mineral Phase ◽  
Inorganic Nanotubes ◽  
Conductive Material ◽  
Thin Wires ◽  
Morphology And Structure ◽  
Potential Applications ◽  
Tubular Morphology

Since the 1991 discovery of hollow cylindrical carbon-based unidimensional structures, the nanotubular form of matter has been thoroughly investigated leading to a wealth of literature. Their particular features are not limited to graphite but are common in many inorganic highly anisotropic two-dimensional layered compounds. The first non-mineral inorganic nanotubes, constituted of lamellar molybdenum and tungsten disulfides, were synthesized in 1992. Afterwards, a large number of inorganic nanotubes have been synthesized, opening the path to the development of nanoelectronics, due to their dielectric properties. The unique mineral phase that crystallizes with a tubular morphology is chrysotile, which has been tentatively used to prepare ultra-thin wires by filling its hollow nanodimensional core with a conductive material. To overcome its natural heterogeneity in composition, morphology, and structure, synthetic chrysotile-inspired nanotubes have been recently synthesized. These geoinspired nanotubes can be prepared with specific properties, finalized to focused achievements such as preparation of new quantum wires. The existing knowledge on the structural and physicochemical properties of mineral and synthetic chrysotile nanotubes is reviewed, with the aim of emphasizing their potential applications as nonlinear optical and conducting technological devices. Bibliography encompasses over one hundred references.

Achieving Aliphatic Amine Addition to Arylalkynes via the Lewis Acid Assisted Triazole-Gold (TA-Au) Catalyst System

2021 ◽  
Author(s):  
Teng Jia ◽  
Shengyu Fan ◽  
Fengmian Li ◽  
Xiaohan Ye ◽  
Wenke Zhang ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Aliphatic Amine ◽  
Catalyst System ◽  
Au Catalyst ◽  
Amine Addition

Slow relaxation of the magnetization observed in an antiferromagnetically ordered phase for SCM-based two-dimensional layered compounds

2017 ◽  
Vol 46 (10) ◽  
pp. 3170-3178 ◽  
Author(s):  
Koichi Kagesawa ◽  
Yuki Nishimura ◽  
Hiroki Yoshida ◽  
Brian K. Breedlove ◽  
Masahiro Yamashita ◽  
...  
Keyword(s):  
Slow Relaxation ◽  
Layered Compounds ◽  
Neel Temperature ◽  
Two Dimensional ◽  
Néel Temperature ◽  
Spin Flip

We showed 2D-layered compounds exhibiting SCM-like behavior in an AF ordered phase. By introducing counteranions with a different size, Néel temperature and spin-flip inversion field could be tuned.

Two-dimensional magnetic behaviour of CrxGa2.67 − xS4 (0.87 ⩽ x ⩽ 1.00) layered compounds

1987 ◽  
Vol 48 (3) ◽  
pp. 269-273 ◽  
Author(s):  
L. Gastaldi ◽  
M.G. Simeone ◽  
S. Viticoli ◽  
A. Tomas ◽  
M. Guittard ◽  
...  
Keyword(s):  
Magnetic Behaviour ◽  
Layered Compounds ◽  
Two Dimensional
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