Soluble Ring-Unsubstituted Phthalocyanine Zirconium(IV) and Niobium(V) cis-Alkoxides and Their Catalytic Activity Toward the Ring-Opening Polymerization of rac-Lactide.

ABSTRACT: A series of soluble ring-unsubstituted early-transition metallophthalocyanine (PcM) alkoxides with zirconium(IV) and niobium(V) metal centers was prepared via salt metathesis with PcM chlorides and a range of lithium or sodium alkoxides (NaOMe, NaOEt, LiOⁱPr, and NaO^tBu); several examples were structurally characterized. Given their large ionic size, the metal centers protrude out of the Pc cavity, engendering cis-axial ligation of the alkoxides and thereby generating substantially improved solubility relative to the starting PcM chlorides. Seven-coordinate PcM(OR)₃-type coordination spheres were typically observed, with lithium- or sodium-balanced "ate" species PcZr(OⁱPr)₃Li(THF) and PcZr(O^tBu)₃Na(THF) isolated f

SUBMITTER: Ganga-Sah Y 

PROVIDER: S-EPMC12444749 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature