  We report on the first detailed infrared chemical analysis of five binary
members (S277, S997, S975, S1031, and S1195) in the open cluster M67 (NGC
2682). These stars are located outside (bluer and/or brighter than) the
main-sequence turnoff region in M67. High-resolution (R ~ 45,000) near-infrared
spectra were obtained with the Immersion GRating INfrared Spectrograph (IGRINS)
at the McDonald Observatory 2.7 m Harlan J. Smith Telescope, providing full
spectral coverage of the H and K bands. The abundances of C, Na, Mg, Al, Si, S,
Ca, Fe, and Ni are measured using neutral atomic absorption lines. We detect v
sin i greater than or equal to 25 km s-1 in three of our program stars: S1031,
S975, and S1195. We find our derived abundances to be in good agreement with
turnoff star abundances, similar to published analyses of blue straggler stars
in M67 from optical spectra. Detection of a carbon enhancement or depletion
resulting from mass transfer is difficult due to the uncertainties in the
carbon abundance and the relatively modest changes that may occur through red
giant and asymptotic giant branch evolution.
