Methylene (compound) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Methylene (compound)" in English language version.

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7doi.org

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books.google.com (Global: 3^rd place; English: 3^rd place)

W. B. DeMore and S. W. Benson (1964), Preparation, properties, and reactivity of methylene. In Advances in Photochemistry, John Wiley & Sons, 453 pages. ISBN 0470133597
J. Dumas and E. Péligot (1835) "Mémoire sur l'espirit de bois et sur les divers composés ethérés qui en proviennent" (Memoir on spirit of wood and on the various ethereal compounds that derive therefrom), Annales de chimie et de physique, 58 : 5-74; from page 9: Nous donnerons le nom de méthylène (1) à un radical … (1) μεθυ, vin, et υλη, bois; c'est-à-dire vin ou liqueur spiritueuse du bois. (We will give the name "methylene" (1) to a radical … (1) methy, wine, and hulē, wood; that is, wine or spirit of wood.)
Morrison, Robert Thornton; Boyd, Robert Neilson (1973). Organic Chemistry. Allyn and Bacon. ISBN 978-0-205-04136-7.

doi.org (Global: 2^nd place; English: 2^nd place)

IUPAC, Compendium of Chemical Terminology, 5th ed. (the "Gold Book") (2025). Online version: (2006–) "carbenes". doi:10.1351/goldbook.C00806
Shavitt, Isaiah (1985). "Geometry and singlet-triplet energy gap in methylene: A critical review of experimental and theoretical determinations". Tetrahedron. 41 (8): 1531–1542. doi:10.1016/S0040-4020(01)96393-8.
Herzberg, G.; Shoosmith, J. (1959). "Spectrum and Structure of the Free Methylene Radical". Nature. 183 (4678): 1801–1802. Bibcode:1959Natur.183.1801H. doi:10.1038/1831801a0. S2CID 4272040.
P.R. Bunker, 'The Spectrum, Structure, and Singlet-Triplet Splitting in Methylene CH₂.' Chapter in ‘Comparison of Ab Initio Quantum Chemistry with Experiment for small molecules’, ed. Rodney J. Bartlett, Reidel Dordrecht The Netherlands (1985). https://doi.org/10.1007/978-94-009-5474-8_6
Demore, William B; Pritchard, H. O; Davidson, Norman (1959). "Photochemical Experiments in Rigid Media at Low Temperatures. II. The Reactions of Methylene, Cyclopentadienylene and Diphenylmethylene". Journal of the American Chemical Society. 81 (22): 5874. Bibcode:1959JAChS..81.5874D. doi:10.1021/ja01531a008.
Jacox, [ILL] E; Milligan, Dolphus E (1963). "Infrared Study of the Reactions of CH2and NH with C2H2and C2H4in Solid Argon". Journal of the American Chemical Society. 85 (3): 278. Bibcode:1963JAChS..85..278J. doi:10.1021/ja00886a006.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
Chang, Sou Chan; Kafafi, Zakya H.; Hauge, Robert H.; Billups, W. Edward; Margrave, John L. (1987). "Isolation and characterization of copper methylene (CuCH2) via FTIR matrix isolation spectroscopy". Journal of the American Chemical Society. 109 (15): 4508–4513. Bibcode:1987JAChS.109.4508C. doi:10.1021/ja00249a013.

ebi.ac.uk (Global: 5,849^th place; English: 7,886^th place)

"methanediyl (CHEBI:29357)". Chemical Entities of Biological Interest. UK: European Bioinformatics Institute. 14 January 2009. IUPAC Names. Retrieved 2 January 2012.

harvard.edu (Global: 18^th place; English: 17^th place)

ui.adsabs.harvard.edu

Herzberg, G.; Shoosmith, J. (1959). "Spectrum and Structure of the Free Methylene Radical". Nature. 183 (4678): 1801–1802. Bibcode:1959Natur.183.1801H. doi:10.1038/1831801a0. S2CID 4272040.
Demore, William B; Pritchard, H. O; Davidson, Norman (1959). "Photochemical Experiments in Rigid Media at Low Temperatures. II. The Reactions of Methylene, Cyclopentadienylene and Diphenylmethylene". Journal of the American Chemical Society. 81 (22): 5874. Bibcode:1959JAChS..81.5874D. doi:10.1021/ja01531a008.
Jacox, [ILL] E; Milligan, Dolphus E (1963). "Infrared Study of the Reactions of CH2and NH with C2H2and C2H4in Solid Argon". Journal of the American Chemical Society. 85 (3): 278. Bibcode:1963JAChS..85..278J. doi:10.1021/ja00886a006.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
Chang, Sou Chan; Kafafi, Zakya H.; Hauge, Robert H.; Billups, W. Edward; Margrave, John L. (1987). "Isolation and characterization of copper methylene (CuCH2) via FTIR matrix isolation spectroscopy". Journal of the American Chemical Society. 109 (15): 4508–4513. Bibcode:1987JAChS.109.4508C. doi:10.1021/ja00249a013.

iupac.org (Global: 538^th place; English: 863^rd place)

old.iupac.org

"methylidene (preferred IUPAC name)" (PDF). p. 314.
"methylene (preferred IUPAC name)" (PDF). p. 58.
"methylidene (preferred IUPAC name)" (PDF). p. 921.

goldbook.iupac.org

IUPAC, Compendium of Chemical Terminology, 5th ed. (the "Gold Book") (2025). Online version: (2006–) "carbenes". doi:10.1351/goldbook.C00806

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Herzberg, G.; Shoosmith, J. (1959). "Spectrum and Structure of the Free Methylene Radical". Nature. 183 (4678): 1801–1802. Bibcode:1959Natur.183.1801H. doi:10.1038/1831801a0. S2CID 4272040.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Gaspar, Peter P.; Hammond, George S. (1964). "Chapter 12: The Spin States of Carbenes". In Kirmse, Wolfgang (ed.). Carbene Chemistry. Vol. 1. New York: Academic Press. pp. 235–274. OCLC 543711. Among experiments which have not, to our knowledge, been carried out as yet is one of a most intriguing nature suggested in the literature of no less than 19 years ago (91).
Footnote 91 cites the relevant issue of Walt Disney's Comics and Stories.

Methylene (compound) (English Wikipedia)

books.google.com (Global: 3rd place; English: 3rd place)

doi.org (Global: 2nd place; English: 2nd place)

ebi.ac.uk (Global: 5,849th place; English: 7,886th place)

harvard.edu (Global: 18th place; English: 17th place)