You probably flooded the distributor and shorted it out.
You will need to remove several allen head screws to remove the distributor cap -- its under a black plastic cover. the cover may have a screw or two holding it on.
Remove cap, dry it out, and try again. Also, dry the wire from the coil to the distributor cap.
If you see serious burn marks (spidery white marks) where the coil wire goes close to metal parts, you need some new wires. If you run the engine in the dark with the hood open, lights off, you will see why!
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!