... Explore this journal >. Chemistry – A European Journal: Previous article in ... by using various metal complexes, such as Co,7b,c Ru,7a Cu,8, 9f,l,s Au,9p Ag,9i,q and Pd9m to catalyze nitrene insertion, but rhodium dimers remain the most employed complexes.9a–c,g,h,j,k,n,o,r,t ...