The technique of laser hash phyotolysis/laser absorption has been used
to obtain absolute removal rate constants for singlet methylene, (CH2
)-C-1 (a(-1)A(1)), with various saturated and unsaturated hydrocarbons
. The a removal rate constants for CH4, C2H6, C3H8, C2H4, C3H6, C2H2,
CH2CCH2, and C6H6 were found to be in excellent agreement with previou
sly reported results. Removal rate constants were also measured for n-
C4H10, i-C4H10, n-C5H12, c-C3H6, c-C6H12, 1-C4H8, cis-2-C4H8, trans-2-
C4H8, and 1-C4H6, and determined to be (3.17 +/- 0.15), (2.53 +/- 0.11
), (3.35 +/- 0.24), (1.63 +/- 0.08), (3.77 +/- 0.21), (3.80 +/- 0.20),
(3.67 +/- 0.16), (3.43 +/- 0.16) and (4.05 +/- 0.18) x 10(-10) cm(3)
molecule(-1) s(-1), respectively. This series of cm hydrocarbons forms
the basis of a larger series of compounds containing a wide variety o
f organic functional groups. The removal rate constants are reported h
ere, both as a series within its own right, and as a reference point f
or future work.