Functional group induced structural diversities and photocatalytic, magnetic and luminescence sensing properties of four cobalt(ii) coordination polymers based on 1, 3, 5-tris(2-methylimidazol-1-yl)benzene. Issue 4 (3rd January 2020)

• Record Type: Journal Article
• Authors: Wang, Jun; Chen, Ning-Ning; Zhang, Chen; Jia, Li-Yong; Fan, Liming
• Is Part Of: CrystEngComm. Volume 22:Issue 4(2020)
• Page Start: 811
• Page End: 820
• Publication Date: 2020-01-03
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c9ce01474h
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Based on the designed tripodal linker timb, four cobalt(ii ) coordination polymers, {[Co4 (timb)2 (Br–IPA)4 ]·5H2 O} n (1 ), {[Co(timb)0.5 (NH2 –IPA)]·4H2 O} n (2 ), {[Co5 (timb)4 (OH–IPA)4 ]·2NO3 ·2DMA·2H2 O} n (3 ), and {[Co3 (timb)2 (SO3 –IPA)2 (H2 O)2 ]·8H2 O} n (4 ), have been obtained. Abstract : Based on the designed tripodal linker 1, 3, 5-tris(2-methylimidazol-1-yl)benzene (timb), four cobalt(ii ) coordination polymers, {[Co4 (timb)2 (Br–IPA)4 ]·5H2 O} n (1 ), {[Co(timb)0.5 (NH2 –IPA)]·4H2 O} n (2 ), {[Co5 (timb)4 (OH–IPA)4 ]·2NO3 ·2DMA·2H2 O} n (3 ), and {[Co3 (timb)2 (SO3 –IPA)2 (H2 O)2 ]·8H2 O} n (4 ), have been obtained by adjusting the meta -functional groups of isophthalic acid (H2 IPA). CP 1 displays an unprecedented 3D 3-nodal (3, 4, 8)-connected net with the point (Schlafli) symbol {4 2 ·6 4 }{4 2 ·6}2 {4 6 ·6 14 ·7 4 ·8 3 ·9} based on trinuclear {Co3 (COO)6 } SBUs. CP 2 shows an interesting 2D (3, 4)-connected {6 3 }{6 6 } bilayer with ABAB packing. CP 3 is a 2D 6-nodal (3, 3, 3, 4, 4, 4)-connected sheet with the point (Schlafli) symbol {4·5 2 }{4·5 3 ·7 2 }2 {4 2 ·5 2 ·6·7}3 {4 3 }{5 3 }2 . CP 4 exhibits a 2D + 2D → 3D interpenetrating net based on the 2D (3, 4)-connected {6 3 }{6 6 } bilayer structure. CPs 1–4 possess excellent luminescence sensing properties for Fe 3+ and Cr2 O7 2− ions in aqueous solution with high sensitivity and selectivity. Besides, the magnetic properties as well as the photocatalytic activities for the degradation of methylene blue (MB) of CPs 1–4 under visible light have been investigated.