Preheat oven to 400°F. Rub salmon with 1 tsp of the oil, and place on a parchment lined sheet pan. Sprinkle with 1 tsp of the salt.
Bake for 7-9 minutes, until it is almost fully cooked (this will depend in the size and thickness of the salmon)
Meanwhile, stir together marmalade, soy sauce, vinegar and sesame oil in a small saucepan. Bring to a simmer over medium, and cook, stirring often, until slightly thickened and reduced to about ½ cup, about 6 minutes. Set aside.
Put the broiler on and remove the salmon from the oven, brush marmalade mixture on the top and sides of the salmon.
Broil until the salmon is and glazed, about 3 minutes.