Identification of Molecular-Adsorption Geometries and Intermolecular Hydrogen-Bonding Configurations by In Situ STM Manipulation

2013 ◽  
Vol 52 (29) ◽  
pp. 7442-7445 ◽  
Author(s):  
Wei Xu ◽  
Huihui Kong ◽  
Chi Zhang ◽  
Qiang Sun ◽  
Henkjan Gersen ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Adsorption ◽  
Intermolecular Hydrogen Bonding ◽  
In Situ Stm

Identification of Molecular-Adsorption Geometries and Intermolecular Hydrogen-Bonding Configurations by In Situ STM Manipulation

2013 ◽  
Vol 125 (29) ◽  
pp. 7590-7593 ◽  
Author(s):  
Wei Xu ◽  
Huihui Kong ◽  
Chi Zhang ◽  
Qiang Sun ◽  
Henkjan Gersen ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Adsorption ◽  
Intermolecular Hydrogen Bonding ◽  
In Situ Stm

Adsorption-geometry induced transformation of self-assembled nanostructures of an aldehyde molecule on Cu(110)

Nanoscale ◽  
2014 ◽  
Vol 6 (19) ◽  
pp. 11062-11065 ◽  
Author(s):  
Chi Zhang ◽  
Qiang Sun ◽  
Kai Sheng ◽  
Qinggang Tan ◽  
Wei Xu
Keyword(s):  
Hydrogen Bonding ◽  
Molecular Adsorption ◽  
Intermolecular Hydrogen Bonding ◽  
Aldehyde Molecule ◽  
Self Assembled ◽  
Adsorption Geometry ◽  
Bonding Patterns

Self-assembled nanostructures can be transformed at different coverages with different intermolecular hydrogen bonding patterns in relation to molecular adsorption geometries.

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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