Jian-Gang Ding

Structurally versatile cadmium coordination polymers based on bis(1,2,4-triazol)ethane and rigid aromatic multicarboxylates: syntheses, structures and properties

Nine Cd(II) coordination polymers {[Cd(bte)(NO2-bdc)(H2O)]·H2O}n (1), {[Cd(bte)(I-bdc)(H2O)]·H2O}n (2), {[Cd(bte)0.5(OH-bdc)(H2O)]·H2O}n (3), {[Cd(bte)2(H2O)2]·(SO3-Hbdc)·4H2O}n (4), {[Cd(bte)0.5(1,4-bdc)(H2O)]·2H2O}n (5), {[Cd2(bte)2(btec)(H2O)2]·11H2O}n (6), [Cd(btre)(obc)2]n (7), {[Cd(btre)0.5(NO2-bdc)(H2O)2]·H2O}n (8) and {[Cd3(btre)2(SO3-bdc)2]·4H2O}n (9) (bte = 1,2-bis(1,2,4-triazol-1-yl)ethane, btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, NO2-bdc = 5-nitroisophthalate, I-bdc = 5-iodoisophthalate, OH-bdc = 5-hydroxyisophthalate, SO3-bdc = 5-sulfoisophthalate, 1,4-bdc = 1,4-benzenedicarboxylate, btec = 1,2,4,5-benzenetetracarboxylate, obc = 4-hydroxybenzenecarboxylate) have been synthesized and structurally characterized. 1 and 2 are independent 1D MONTs. An interesting structural feature of 1 and 2 is that the NO2 or I groups of each 1D MONT polythread into two adjacent 1D MONTs to form a (1D → 2D) polythreaded array. 3 is a (3,4)-connected 2D network with the point symbol (42·6)(42·63·8). 4 shows the double chain cation [Cd(bte)2(H2O)2]n2n+ and 3D hydrogen bond architecture. The structure of 5 is an unusual (4,4)-connected 3D network with the point symbol (4·6·84)(4·63·82)2. 6 is an unusual (3,4)-connected 3D network with the point symbol (83)2(86). The structures of 7 and 8 are the 1D chain and 1D ladder, respectively. 9 exhibits an unusual (3,5,5,6)-connected three-dimensional network with the point symbol (42·8)2(43·83·103·12)2(43·6·83·103)2(44·63·86·102). The luminescence and thermal stability of 1–9 were investigated.

Synthesis and crystal structure of a new one-dimensional system with end-to-end single dicyanamide bridges between nickel(II) centres

Abstract The complex [Ni(tn) 2 {N(CN) 2 }]ClO 4 (tn=trimethylenediamine) has been synthesized and the structure has been determined. The complex forms a one-dimensional chain structure via the bidentate bridging ligand dicyanamide. A two-dimensional networks is formed via interchain hydrogen bond interactions.

Syntheses, structures and photocatalytic degradation of organic dyes for two isostructural copper coordination polymers involving in situ hydroxylation reaction

Abstract Two copper(II) coordination polymers, {[Cu2(btre)(hsuc)Cl(H2O)]·1.5H2O}n (1) and {[Cu2(btre)(hsuc)Br(H2O)]·1.5H2O}n (2) (btre = 1,2-bis(1,2,4-triazol-4-yl)ethane, H3hsuc = 2-hydroxysuccinic acid), were synthesized by the hydrothermal method via in situ hydroxylation reaction with fumarate (fum), btre and CuCl2/CuBr2, and characterized by elemental analyses, IR, TG and X-ray diffraction. 1 and 2 are isostructural and show a 4-connected 2-D network based on [Cu2O] dimers. 1 and 2 show good photocatalytic activity for the degradation of organic dyes methylene blue and methyl orange under UV light irradiation.