Chemistry Reference
In-Depth Information
Fig. 13.4
The IR overlapping of the gas-phase (
green line
) BMPyBF4 (1-butyl-4-methylpyridinium
tetrafluoroborate, the IL no. 1 in the Table
13.1
), with the same IL solvated in water, as well as
in an acidic buffer with pH
2.8, and in the TRIS/THAM (tris(hydroxymethyl)aminomethane)
base buffer at
higher
0.07 and
lower
0.007 concentration, respectively; the predicted IL-bondon at
2233.1648 cm
−
1
in Table
13.1
corresponds here with a special region of
middle
IR spectra, actually
not assigned to an existing electronic (bending or stretching) vibration, yet being sensitive as for
0.5361 [%] absorption from the total incoming light as characteristic for the AC binding itself
=
bonding type as being of ionic nature, in accordance with the general bondonic
prescriptions (Putz
2010a
,
2012a
,
b
,
2015a
, Putz et al.
2015b
, see Chap. 12 of
this monograph);
The bosonic velocity of bondons is moderate high, so below the predicted extreme
value as of 99.9951 [% c], while carrying a less charge than the electron, yet in
a range between one—to—two order degrees respecting electronic unity; these
feature, further confirms the ionic character of chemical bonding carried by the
bondon, so natural for ionic liquids;
Yet, the bondonic analysis provide also a reminiscence of the multiple bonding
character in IL, apart of the dominant ionic bonding, due to the bondonic life time
that lays in the range of attoseconds; although with an observable perspective
(Koke et al.
2010
), this finding truly impedes the nowadays direct observation
for IL-bondons, since the associated quantum level lifetime fluctuation period
(
t
Bond
in Table
13.1
) actually included from few-to-tenths of bondonic os-
cillations; nevertheless, for when available the experimental ultra-fast (atto)
spectroscopy below the 6 attoseconds (i.e. to a quarter or below of the atomic
unit of time that is 24 attoseconds) the present study stil predicts the IL-bondonic
observation for the compound no. 10 in Table
13.1
, in a Raman spectra.
Finally, the structural and bondonic data of IL of Table
13.1
are correlated with the
recorded biological activity of the worked IL on the acetycholinesterase, just to see
