Patent ID: 7022843

Claim:
A compound having the formula: or wherein each R 2 , R 3 , R 4 , R 5 and R 6 are independently H, nitro, halo, hydroxy, alkoxy, CO 2 R or OCOR, wherein each R is C 1-6 alkyl; M is a metal selected from the group consisting of Ni(II), Cu(II), Zn, Sn, Ge, Si, Ga, Al, Mn(IIl), Gd(III), In and Tc or 2H atoms; and wherein said compound is selected from the group consisting of T(m-NO 2 )PC(OH) 2 (compound 4), T(p-Br)PC(OH) 2 (compound 5), T(m-Br)PC(OH) 2 (compound 6), T(m-F)PC(OH) 2 (compound 7), T(o-F)PC(OH) 2 (compound 8), TF 5 PC(OH) 2 (compound 9), T(m-OH)PC(OH) 2 (compound 11), T(p-CO 2 Me)PC(OH) 2 (compound 12), T(p-OCOEt)PC(OH) 2 (compound 13), T(p-OCH 3 )PC(OH) 2 (compound 14), T(m-OCH 3 )PC(OH) 2 (compound 15), T(m,m′—OCH 3 )PC(OH) 2 (compound 16), T(m-OCH 3 ,p-OH)PC(OH) 2 (compound 17), T(o,m,m′—OCH 3 )PC(OH) 2 (compound 19), T(o,p,o′—OCH 3 )PC(OH) 2 (compound 20), T(p-CH 3 )PC(OH) 2 (compound 21), T(o,p,o′—CH 3 )PC(OH) 2 (compound 22), and T(o,p,o′—OCH 3 )PB(OH) 4 (compound 30), wherein each T is independently tetra.