
Crystal Growth and Design p. 1254 - 1265 (2020)
Update date:2022-08-17
Topics:
Chowdhury, Tania
Adhikary, Amit
Roy, Manasi
Zangrando, Ennio
Samanta, Debabrata
Das, Debasis
Two newly synthesized Fe(III) based complexes, [Fe4L2(μ3-O)2(Cl)2(MeOH)4(H2O)4](ClO4)2·4H2O·MeOH (1) and [Fe2L3]·4DMF (2) were isolated in solid crystalline form using the reaction of iron(III) perchlorate with the ligand H2L (H2L = 6,6′-((1E,1′E)-hydrazine-1,2-diylidenebis(methanylylidene))bis(2-methoxyphenol). (DMF= N,N-dimethylformamide, MeOH = methanol). Compound 1 was self-assembled in MeOH, but when the solvent was changed to DMF, compound 2 was harvested. Furthermore, compound 1 was converted to compound 2 just by dissolving compound 1 in DMF. Sequential self-assembly and conversion of compound 1 to 2 were monitored by UV-vis spectroscopy and ESI-Mass spectroscopy in solution phase. Single crystal X-ray analysis showed that compound 1 has μ3-oxo bridged tetranuclear structure whereas compound 2 has puckered dinuclear structure. Magnetic studies indeed revealed frustrated magnetic spin for compound 1 whereas antiferromagnetic interaction was observed for compound 2. The spectrophotometrical investigation on their phosphatase like activity revealed remarkable hydrolytic efficiency for both the complexes. Michaelis-Menten-derived kinetic parameters suggest the competitiveness of the rate of P-O bond fission employing the phosphomonoester (4-nitrophenyl)phosphate (PNPP) in 97.5% DMF is 1 > 2, and the kcat value lies in the range 28.95-38.43 s-1 at 298 K. Computational calculations have verified the higher catalytic activity of compounds 1 over 2 attributed to the large number of labile groups attached to the metal centers.
View More
Haitong Chemical Industrial Co.,Ltd.
website:https://www.haitonglongwin.com/
Contact:+86-022-66221018
Address:18-701, No.99, The 4th Street, TEDA,
Chengdu D-Innovation Pharmaceutical Co., Ltd
Contact:86-28-85105536
Address:1001, B6, No.88 Keyuan South Road, Chengdu Hi-Tech Zone
Shanghai He Yang International Trading Co., Ltd.
Contact:+86-21-52043598
Address:Room 816, Blag.5, No.58 Huachi Road
Shandong Jincheng Zhonghua Bio-pharmaceutical Co.,Ltd
Contact:+86-533-5415882
Address:Zichuan Economic Development Zone,Zibo City,Shandong Province,China
Qingdao Kingway Pharmtech Co., Ltd.
Contact:86-532-87118899
Address:No. 88, Middle Haixi Road, Jiaonan City, Qingdao, China
Doi:10.1039/c9ob00862d
(2019)Doi:10.1103/PhysRevB.71.125329
(2005)Doi:10.1055/s-1986-31865
(1986)Doi:10.1002/ejoc.201600530
(2016)Doi:10.1021/jo990837g
(1999)Doi:10.1016/0040-4039(95)01437-M
(1995)