- CHEMICAL FOAMING AGENTS CONTAINING TOSYL GROUPS
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Chemical foaming agents having p-toluenesulfonyl groups. Processes for preparing foamed polyolefin compositions using chemical foaming agents having p-toluenesulfonyl groups. Articles of manufacture containing formed polyolefins prepared using chemical foaming agents having p-toluenesulfonyl groups.
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Paragraph 0073
(2021/08/27)
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- Dinuclear, tetranuclear and chain (MnII, CoII) complexes of multifunctional hydrazone ligands- Structural and magnetic studies
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The coordination chemistry of a group of hydrazone-based ligands, modified with carboxylate and heterocyclic terminal donor groups, with MnII and CoII has been investigated. The multifunctional nature of the ligands allows coordinative flexibility based on the hydrazone core, which is well established to lead to spin-coupled polymetallic assemblies through μ-Ohydrazone bridging. Examples of dinuclear, tetranuclear and chain complexes are reported with hydrazone, carboxylate and triazole bridging. Spin exchange through the μ-O and μ-N,N bridging connections leads to antiferromagnetic exchange in most cases, except for the central subunit in the MnII4 chain complex, where small ( 90°) bridge angles result in contributing ferromagnetic interactions. Multifunctional polytopic hydrazone ligands form polymetallic complexes with μ-O (hydrazone, carboxylate) and μ-N,N (triazole) bridging, leading to spin-spin interactions between the metal centres with examples of antiferromagnetic and ferromagnetic exchange.
- Bettle, Peter J.,Dawe, Louise N.,Anwar, Muhammad U.,Thompson, Laurence K.
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experimental part
p. 5036 - 5042
(2012/01/14)
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