Unusual molecular complexes of antimony fluoride dimers with Acetonitrile and Pyridine: structures and bonding

2021 ◽  
Author(s):  
Elena I. Davydova ◽  
Alexander Viktorovich Virovets ◽  
Eugenia V. Presypkina ◽  
Anna Vladimirovna Pomogaeva ◽  
Anna S Lisovenko ◽  
...  
Keyword(s):  
Molecular Complex ◽  
Molecular Complexes ◽  
Antimony Pentafluoride ◽  
Antimony Trifluoride

Structures of two new molecular complexes of antimony pentafluoride with pyridine (Py) and acetonitrile (AN), SbF5•Py and Sb2F10•AN, as well as a molecular complex of antimony trifluoride Sb2F6•Py and its...

scholarly journals Polymer Optical Waveguide Sensor Based on Fe-Amino-Triazole Complex Molecular Switches

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 195
Author(s):  
Muhammad Shaukat Khan ◽  
Hunain Farooq ◽  
Christopher Wittmund ◽  
Stephen Klimke ◽  
Roland Lachmayer ◽  
...  
Keyword(s):  
Molecular Complex ◽  
Electromagnetic Interference ◽  
Optical Power ◽  
Uv Curing ◽  
Molecular Complexes ◽  
Core Material ◽  
Absorption Bands ◽  
Electronic Temperature ◽  
Polymer Waveguide ◽  
Temperature Detection

We report on a polymer-waveguide-based temperature sensing system relying on switchable molecular complexes. The polymer waveguide cladding is fabricated using a maskless lithographic optical system and replicated onto polymer material (i.e., PMMA) using a hot embossing device. An iron-amino-triazole molecular complex material (i.e., [Fe(Htrz)2.85(NH2-trz)0.15](ClO4)2) is used to sense changes in ambient temperature. For this purpose, the core of the waveguide is filled with a mixture of core material (NOA68), and the molecular complex using doctor blading and UV curing is applied for solidification. The absorption spectrum of the molecular complex in the UV/VIS light range features two prominent absorption bands in the low-spin state. As temperature approaches room temperature, a spin-crossover transition occurs, and the molecular complex changes its color (i.e. spectral properties) from violet-pink to white. The measurement of the optical power transmitted through the waveguide as a function of temperature exhibits a memory effect with a hysteresis width of approx. 12 °C and sensitivity of 0.08 mW/°C. This enables optical rather than electronic temperature detection in environments where electromagnetic interference might influence the measurements.

Estimation of the fraction of dative structure in molecular complexes using Hammett ρ values

1979 ◽  
Vol 57 (12) ◽  
pp. 1418-1420
Author(s):  
Bo-Long Poh
Keyword(s):  
Charge Transfer ◽  
Ionization Potential ◽  
Molecular Complex ◽  
Physical Interpretation ◽  
Molecular Complexes ◽  
Transfer Energy ◽  
Simple Method ◽  
Charge Transfer Energy

A simple method of estimating the fraction of dative structure in molecular complexes using Hammett ρ values is given. A physical interpretation of the parameter m in the equation, hν = mID + n, relating the charge-transfer energy, hν, of a molecular complex and the ionization potential, ID, of the donor is given.

scholarly journals The versatile molecular complex component LC8 promotes several distinct steps of flagellar assembly

2012 ◽  
Vol 198 (1) ◽  
pp. 115-126 ◽  
Author(s):  
Anjali Gupta ◽  
Dennis R. Diener ◽  
Priyanka Sivadas ◽  
Joel L. Rosenbaum ◽  
Pinfen Yang
Keyword(s):  
Molecular Complex ◽  
Binding Sites ◽  
Molecular Complexes ◽  
Terminal Region ◽  
Radial Spoke ◽  
Complex Component ◽  
Flagellar Assembly ◽  
A Subunit ◽  
Docking Proteins ◽  
Base Formation

LC8 is present in various molecular complexes. However, its role in these complexes remains unclear. We discovered that although LC8 is a subunit of the radial spoke (RS) complex in Chlamydomonas flagella, it was undetectable in the RS precursor that is converted into the mature RS at the tip of elongating axonemes. Interestingly, LC8 dimers bound in tandem to the N-terminal region of a spoke phosphoprotein, RS protein 3 (RSP3), that docks RSs to axonemes. LC8 enhanced the binding of RSP3 N-terminal fragments to purified axonemes. Likewise, the N-terminal fragments extracted from axonemes contained LC8 and putative spoke-docking proteins. Lastly, perturbations of RSP3’s LC8-binding sites resulted in asynchronous flagella with hypophosphorylated RSP3 and defective associations between LC8, RSs, and axonemes. We propose that at the tip of flagella, an array of LC8 dimers binds to RSP3 in RS precursors, triggering phosphorylation, stalk base formation, and axoneme targeting. These multiple effects shed new light on fundamental questions about LC8-containing complexes and axoneme assembly.

The preparation and crystal structure of the 3:1 adduct of antimony trifluoride and antimony pentafluoride containing the (Sb3F8 +)? cation

1983 ◽  
pp. 619 ◽  
Author(s):  
W. A. Shantha Nandana ◽  
Jack Passmore ◽  
D. C. Neil Swindells ◽  
Peter Taylor ◽  
Peter S. White ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Antimony Pentafluoride ◽  
Antimony Trifluoride
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