TY - JOUR
T1 - Search for Structurally Resembled Mn/Ca Cubane Core of the Oxygen Evolving Complex of Photosystem II Yielded MnIV, MnIII3MnII and MnIII2CaII2Entities
T2 - Structure and Magnetism
AU - Modak, Ritwik
AU - Sikdar, Yeasin
AU - Bhattacharya, Priyabrata
AU - Kinyon, Jared S.
AU - Dalal, Naresh
AU - Bindra, Jasleen K.
AU - Goswami, Sanchita
N1 - Funding Information:
R.M acknowledge UGC, India for RFSMS fellowship (Sanction no. UGC/740/RFSMS) for financial support. P.B. is thankful to the University Grants Commission (UGC), New Delhi, for Senior Research Fellowship (Ref. No. 217/(CSIR-UGC NET JUNE 2018)). SG thanks Department of Science & Technology and Biotechnology, Govt. of West Bengal (Memo No.: 124(Sanc.)/ST/P/S&T/15G-3/2015, dated 28.09.2018) for research funding. DST-FIST, CAS(V) and DST Purse is gratefully acknowledged for providing the X-ray diffraction and HRMS facility at the Department of Chemistry, University of Calcutta. The authors thank Dr. Prodip Howlader for fruitful discussion regarding the crystallographic part.
Funding Information:
R.M acknowledge UGC, India for RFSMS fellowship (Sanction no. UGC/740/RFSMS) for financial support. P.B. is thankful to the University Grants Commission (UGC), New Delhi, for Senior Research Fellowship (Ref. No. 217/(CSIR‐UGC NET JUNE 2018). SG thanks Department of Science & Technology and Biotechnology, Govt. of West Bengal (Memo No.:124(Sanc.)/ST/P/S&T/15G‐3/2015 dated 28.09.2018) for research funding. DST‐FIST, CAS(V) and DST Purse is gratefully acknowledged for providing the X‐ray diffraction and HRMS facility at the Department of Chemistry, University of Calcutta. The authors thank Dr. Prodip Howlader for fruitful discussion regarding the crystallographic part.
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/5/9
Y1 - 2022/5/9
N2 - The aim of the paper was to synthesize Mn/Ca entities that are structurally similar to the reported oxygen-evolving complex (OEC) of photosystem II (PSII). Here we have ventured Schiff base combinations of racemic (±)-3-Aminopropane-1,2-diol and Salicyladehyde (H3L1)/o-Vanillin (H3L2) with varied ratios of ligand : CaIIsalt : MnIIIsalt. Interestingly, H3L2 : CaCl2 : MnCl2 (2 : 1 : 1) afforded [{MnIII2CaII2(HL2)2Cl2(μ3-OH)2(H2O)6}Cl2 ⋅ 2H2O] (3) whereas H3L1 : CaCl2 : Mn(acetate)2 (2 : 1 : 1) and H3L1 : CaCl2 : MnCl2 (2 : 1 : 2), generated [{MnIV(HL1)2}2 ⋅ 6H2O](1) and [{MnIII3MnII(HL1)3(μ2-Cl)3(μ3-O)} ⋅ 2CH3OH ⋅ 2H2O] (2) respectively. More importantly, we have been able to get a structure which offers partial similarity to reported structure of the OEC. Variable temperature magnetic susceptibility measurements have been performed in the 1.8–30 K region for all the compounds. Overall, these studies provide a critical understanding for the rational design and construction of synthetic OEC.
AB - The aim of the paper was to synthesize Mn/Ca entities that are structurally similar to the reported oxygen-evolving complex (OEC) of photosystem II (PSII). Here we have ventured Schiff base combinations of racemic (±)-3-Aminopropane-1,2-diol and Salicyladehyde (H3L1)/o-Vanillin (H3L2) with varied ratios of ligand : CaIIsalt : MnIIIsalt. Interestingly, H3L2 : CaCl2 : MnCl2 (2 : 1 : 1) afforded [{MnIII2CaII2(HL2)2Cl2(μ3-OH)2(H2O)6}Cl2 ⋅ 2H2O] (3) whereas H3L1 : CaCl2 : Mn(acetate)2 (2 : 1 : 1) and H3L1 : CaCl2 : MnCl2 (2 : 1 : 2), generated [{MnIV(HL1)2}2 ⋅ 6H2O](1) and [{MnIII3MnII(HL1)3(μ2-Cl)3(μ3-O)} ⋅ 2CH3OH ⋅ 2H2O] (2) respectively. More importantly, we have been able to get a structure which offers partial similarity to reported structure of the OEC. Variable temperature magnetic susceptibility measurements have been performed in the 1.8–30 K region for all the compounds. Overall, these studies provide a critical understanding for the rational design and construction of synthetic OEC.
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U2 - 10.1002/ejic.202200058
DO - 10.1002/ejic.202200058
M3 - Article
AN - SCOPUS:85127970581
SN - 1434-1948
VL - 2022
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 13
M1 - e202200058
ER -