Title

Synthesis and Characterization of a Series of Monometallo-, Bimetallo-, and Heterobimetallo-l,2-Ethene-Linked Cofacial Bisporphyrins

Document Type

Article

Publication Date

1-1-1998

Abstract

The stepwise synthesis and characterization of a family of selectively metalated 1,2-bis[5-(2,3,7,8,12,13,17,18-octaethylporphyrinyl)]ethenes is described. These compounds are distinct from most of the previously reported bisporphyrin systems which possessed rigid linking groups or multiple strapping units, and their syntheses offer several advantages over the previously prepared systems. Among the members of this family we report the first heterobimetallic bisporphyrins able to exist as either cis (cofacial) or trans (extended) isomers including cis 13 {[NiII[ZnII]}, cis 14 {[NiII][CuII]}, and trans 15 {[CuII][MnIII]}. Products were characterized by 1H NMR spectroscopy (except those containing CuII and/or MnIII), visible spectroscopy, mass spectrometry, and elemental analyses. X-ray structural data are provided for bisporphyrins 4, 10, and 13-15: cis 4 (C74H88N8Co2), monoclinic. space group P21/c-, a = 21.097(15) Å, b = 14.120(5) Å, c = 22.987(11) Å, β = 108.59(4)°, Z = 4; cis 10 (C74H90N8Cu) monoclinic, space group P21/n, a = 19.695(5) Å, b = 14.427(3) Å, c = 24.679(6) Å, β= 112.72-(2)°. Z = 4; cis 13 (C74H88N8NiZn) monoclinic, space group P21/c-, a = 21.187(3) Å, b = 13.9091(11) Å, c = 22.682(3) Å, β = 108.674(10)°, Z = 4; cis 14 (C74H88N8NiCu) monoclinic, space group P21/c, a = 21.169(3) Å, b = 13.875(2) Å, r = 22.660(3) Å, β = 108.64(9)°, Z = 4; trans 15 (C74H88N8CuMnCl), triclinic, space group P1, a = 9.8123(13), b = 13.742(3), c = 14.774(3), α = 83.26(2), β = 78.532(12), γ = 78.347(14), Z = 1.

Publication Source (Journal or Book title)

Inorganic Chemistry

First Page

1150

Last Page

1160

This document is currently not available here.

Share

COinS