Supporting Information for review only Manuscript ID DT-ART-05-2014-001364 Title: Synthesis of N,N,O-chelate zinc and aluminum complexes and their catalysis in the ring-opening polymerization of ε-caprolactone and rac-lactide Elemental analysis for HL2

Electronic Supplementary Material (ESI) for Dalton Transactions.This journal is © The Royal Society of Chemistry 2014

HR-MS for HL2

09-Jun-2014 10:44:00Micromass GCT-MSRES=7000 half peak=0.0876

USTC-MASS CA064

50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 310m/z0

100

%

20140609-KWL-T-BU-1-ei+ 143 (2.383) Cm (136:143-682:848) TOF MS EI+ 3.09e4187.1102

57.0694

186.1028

95.059591.043365.0381

85.064066.0402

145.0769

143.0622118.060496.0673159.0922

158.0943171.0802

185.0963

271.1678

214.0983188.1134

256.1454215.1015270.1621

272.1720

273.1753