title: Two open-framework germanates with nickel complexes incorporated into the framework.
abstract: Two open-framework germanates, SUT-1 and SUT-2, have been synthesized under hydrothermal conditions using ethylenediamine (en, H(2)NCH(2)CH(2)NH(2)) as templates and Ni(NO(3))(2)·6H(2)O as the transition-metal source. Their frameworks are built with Ge(10) clusters and [Ni(en)(2)](2+) complexes. In both structures, Ge(10) clusters form square nets in the a-c plane, while the [Ni(en)(2)](2+) complexes bridge the square nets via Ni-O-Ge bonds to form 3D networks. They present the first examples to incorporate Ni(2+) complexes into the germanate frameworks. In SUT-2, additional linkages by Ge(2)O(7) clusters between the square nets generate a new type of topology.
authors.affiliation: Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials, Stockholm University, SE-10691 Stockholm, Sweden.
authors.forename: Shiliang
authors.initials: S
authors.lastname: Huang
authors.forename: Kirsten
authors.initials: K
authors.lastname: Christensen
authors.forename: Maxim V
authors.initials: MV
authors.lastname: Peskov
authors.forename: Sihai
authors.initials: S
authors.lastname: Yang
authors.forename: Kuo
authors.initials: K
authors.lastname: Li
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Zou
authors.forename: Junliang
authors.initials: J
authors.lastname: Sun