in tetrahydrofuran under N2; soln. of 5mmol NaMn(CO)5 in THF cooled to -78°C, 5.25 mmol C6H4O2CHCl added; mixt. warmed up to room temp., then stirred for 12 h; pptd. NaCl filtered off, solvent removed; residue extd. with pentane; pentane soln. cooled, ppt. recrystd. from pentane; elem anal.;