Certain pyridyl and isoquinolyl carbinolamine derivatives

A compound capable of forming a coordination bond with a metal by the donation of at least one pair of electrons having a structure selected from the group consisting of:

• ##STR1## where r is selected from the group-consisting of --CH.sub.2 --(CH.sub.2).sub.2 --(C(CH.sub.3).sub.2)--R.sub.1 is ##STR2## Y and Z can be the same or different and are selected from the group consisting of --H --CO.sub.2 H--S).sub.3 H
• X is --OR.sub.1
• with the priviso that X may be --OH when r of L.sub.6 i s --CH.sub.2 --.