Zakya H. Kafafi, Robert H. Hauge, W. Edward Billups,  and John  L. Margrave


<ref>Sou-Chan Chang, Zakya H. Kafafi, Robert H. Hauge, W. Edward Billups, and John L. Margrave (1987), ''[http://pubs.acs.org/doi/pdf/10.1021/ja00249a013 Isolation and characterization of  copper methylene (CuCH<sub>2</sub>) via FTIR matrix isolation spectroscopy]''. Journal of the American Chemical Society, volume 109 pages 4508-4513.  {{doi|10.1021/ja00249a013}}.</ref>

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Infrared study of the reactions of CH<sub>2</sub> and NH with C<sub>2</sub>H<sub>2</sub> and C<sub>2</sub>H<sub>4</sub> in solid argon 

J. Am. Chem. Soc., 1963, 85 (3), pp 278–282
DOI: 10.1021/ja00886a006
Publication Date: February 1963

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Photochemical Experiments in Rigid Media at Low Temperatures. II. The Reactions of Methylene, Cyclopentadienylene and Diphenylmethylene

First PageHi-Res PDF[712 KB]Citing Articles
William B. DeMore, H. O. Pritchard, and Norman Davidson (1959)
J. Am. Chem. Soc., 1959, 81 (22), pp 5874–5879
DOI: 10.1021/ja01531a008
Publication Date: November 1959

Photochemical Experiments in Rigid Media at Low Temperatures.  11.  The Reactions 
of  Methylene, Cyclopentadienylene and Diphenylmethylene 
BY  WILLIAhI B. DEhlORE, H. 0. PRITCIIARD  AND  NORRIAK  DAVIDSO
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W. B. DeMore and S. W. Benson (1964)

Preparation, properties, and reactivity of methylene


Advances in Photochemistry
 edited by David H. Volman, George S. Hammond, Klaus Gollnick
 
 John Wiley & Sons, 2009
ISBN	0470133597, 9780470133590
Length	453 pages

http://books.google.com.br/books?id=RSkziXqqPQgC&pg=PA219
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Methylene can be formed by several routes:
* [[photolysis]] of compounds with [[methylidene]] or [[methanediyl]] group connected to non-carbon atoms, such as [[ethenone|ketene (ethenone)]],CH2=CO, [[diazomethane]] CH2N2, and [[diiodomethane]] CH2I2
* decomposition of said compounds by [[photosensitization|photosensistized]] reagents, such as [[benzophenone]];
* thermal decomposition 

Methilene can gain an electron yielding a monovalent anion [[methylide]] {{chem|CH|2|-}}, which can be obtained as the [[trimethylammonium]] ({{chem|CH|3}})<sub>4</sub>{{chem|N|+}} salt by the reaction of [[phenyl sodium]] {{chem|C|6|H|5|Na}} with [[trimethylammonium bromide]].



{{subst:RMassist|old page name|requested name|reason for move}}

Even though "methylidene" for the group may be more correct than "methylene", the latter seems to be much more common. Th "group" qualifier is needed to distinguish from free radical [[methylene]].


disamb [[methanediyl]] to [[methylene bridge]]

disamb [[methylenes]] to [[methylene bridge]]
disamb [[methylenes]] to [[methylene group]]
disamb [[methylenes]] to [[methylene]]

disamb [[methylene]] to [[methylene bridge]]
disamb [[methylene]] to [[methylene group]]
disamb [[methylene]] to [[methylene (disambiguation)]]