lone pair


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lone pair

n
(Chemistry) chem a pair of valency electrons of opposite spin that are not shared between the atoms in a molecule and are responsible for the formation of coordinate bonds
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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[USPRwire, Tue Dec 18 2018] Aliphatic amines are organic compounds that contain nitrogen atom with a lone pair of electrons.
[ClickPress, Mon Dec 03 2018] Aliphatic amines are organic compounds that contain nitrogen atom with a lone pair of electrons.
One is the "unrelaxed oxygen monovacancy," namely, the [equivalent to]Si...Si[equivalent to] bond, having a Si...Si distance similar to that of regular Si-O-Si bonding (3.1 [Angstrom]) [11], and the other is the "divalent Si," having two Si-O bonds and a lone pair of electrons in a Si [sp.sup.2] hybrid orbital [15-17].
Further, NBO results presented in Table 5 indicate that the absorbed S[O.sub.2] molecule could interact with Li@COF-105 by the dominant donor-acceptor delocalization between 1-center lone pair of atom O7 and 1-center non-Lewis lone pair of atom Li.
(Full disclosure: this writer took part in the melee on Day 2 and went away with the lone pair left in her size.) Of her Bagobo fringe beaded bags, she went home with only one left.
DPPH is a kind of stable free radical in the organic solvents, with its lone pair electrons having the strong absorption at 517 nm.
If the lone pair electrons of the oxygen on the 2pyrrolidone are donated into the antibonding molecular orbitais of the [C.sub.60] (Feng et al.
It is because nitrogen atom can donate the lone pair of electron to the carbon substrates more easily, which undergoes delocalization within the carbon material.
The DBTD molecule has different binding sites such as pyridine ring, lone pair electrons of oxygen, and lone pair electrons of nitrogen.
The C-F bond is 43% ionic [27], and thus it is highly polarized (with [C.sup.[delta]+] and [F.sup.[delta]-]); this high polarity suppresses the fluorine lone pair donation [28].
It is interesting to note, in case of the two dyes, that the lone pair on O atoms in squaric ring participates in the stabilization of these dyes through n/[[pi].sup.*] and n/[[sigma].sup.*] interactions as shown in Table 3.