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@ARTICLE{Das:646668,
author = {Das, Gourab and Friedewald, Daniel A. P. and Tang, Deqi and
Shoyama, Kazutaka and Creazzo, Fabrizio and Luber, Sandra
and Wuerthner, Frank},
title = {{S}econdary {C}oordination {S}phere {E}ffects in
{M}acrocycle-{E}mbedded {M}ononuclear {R}u(bda) {W}ater
{O}xidation {C}atalysts},
journal = {Inorganic chemistry},
volume = {65},
number = {8},
issn = {0020-1669},
address = {Washington, DC},
publisher = {American Chemical Society},
reportid = {PUBDB-2026-00915},
pages = {4710 - 4720},
year = {2026},
abstract = {Integration of Ru(bda) [bda =
(2,2’-bipyridine)-6,6’-dicarboxylate] water oxidation
catalysts together with dibenzofuran, dibenzothiophene, or
carbazole heterocycles within macrocycles 1-3 affords
structures with different conformational preferences. The
latter are dictated by noncovalent interactions of the bda
oxygens with NH (hydrogen bond) or S (chalcogen bond). The
different orientations afford changes in the secondary
coordination sphere, thereby influencing the rate and
mechanism of photocatalytic water oxidation for the three
mononuclear Ru(bda)-based catalysts, with the
dibenzothiophene- and carbazole-based ones favoring the
unimolecular pathway (first-order kinetics), typically
related to water nucleophilic attack (WNA), and the
dibenzofuran one operating via a bimolecular pathway
(second-order kinetics), typically related to the
interaction of two metal-oxo species (I2M). NMR and single
crystal X-ray analyses provided insight into the
conformational preferences of the precursor macrocycles in
the Ru(II) state. Photocatalytic studies including the H/D
kinetic isotope effect (KIE) in deuterated water together
with theoretical studies on the orientation angle-dependent
energy profile for macrocycles in the Ru(V) state afforded a
structure–property relationship that explains the outcome
of the water oxidation experiments.},
cin = {DOOR ; HAS-User},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731},
pnm = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20220939
(I-20220939) / FS-Proposal: I-20230262 (I-20230262) /
SUPRAWOC - Supramolecular Architectures for Ruthenium Water
Oxidation Catalysis (787937)},
pid = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20220939 /
G:(DE-H253)I-20230262 / G:(EU-Grant)787937},
experiment = {EXP:(DE-H253)P-P11-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1021/acs.inorgchem.5c05933},
url = {https://bib-pubdb1.desy.de/record/646668},
}