It is in such cases that isomerism is observed to occur.
"A History of Science, Volume 4(of 5)" by Henry Smith Williams
To such substances the term Isomeric (from 1/ao1/ equal and aei1/o1/ part) is applied.
"Familiar Letters of Chemistry" by Justus Liebig
The artificial alkaloid paraconine, isomeric with the natural conine, will be referred to later.
"Scientific American Supplement, No. 415, December 15, 1883" by Various
A Bibliography of Geometrical Isomerism.
"Scientific American Supplement, No. 832, December 12, 1891" by Various
Further, the allotropic modifications of elements and the isomerism of compounds increased the difficulties.
"Scientific American Supplement, No. 643, April 28, 1888" by Various
C. in a sealed tube for two hours, it becomes an isomeric compound, boiling at 175 deg.
"Scientific American Supplement, No. 711, August 17, 1889" by Various
More than one hypothesis has been proposed to account for these cases of isomerism, but no one has shown itself to be entirely satisfactory.
"Scientific American Supplement, No. 633, February 18, 1888" by Various
The constitution of the isomeric diazo hydroxides has given rise to much discussion.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4" by Various
Many substitution derivatives are known: the monosubstitution derivatives being capable of existing in three isomeric forms.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5" by Various
There are also isomeric quinones of the naphthalene series known as naphthaquinones.
"Coal" by Raphael Meldola
Conformational Theory of Large Molecules: the Rotational Isomeric State Model in Macromolecular Systems, Wiley Interscience, New York, 1994. 260.D. W. R.
Biological and synthetic membranes: What can be learned from a coarse-grained description?
Energy-resolved spectrum of rhodium isomeric emissions collected in 4096 channels for 415 keV within three hours.
Rhodium Mossbauer Supperadiance Induced by Liquid-Nitrogen Cooling
One-proton radioactivity studies have developed soon into a powerful tool to investigate nuclear structure close to and beyond the proton drip line [42, 43, 6] with now more than thirty different nuclei known to emit protons from their ground states or low-lying isomeric states.
Ce.” Although it could be possible that they observed the isomeric state of 139Ce, the half-life of this state (54.8(10)s) is signiﬁcantly different.
Discovery of the Cerium Isotopes
The previously reported value of 4(1) s could not be conﬁrmed. “If the previously reported 4.0 s activity also belongs to 204Au, an explanation could be the two close-lying isomeric states.” However, such a state has so far not been conﬁrmed.
Discovery of the Gold Isotopes