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71.
Chandrasekhar V Nagarajan L Gopal K Baskar V Kögerler P 《Dalton transactions (Cambridge, England : 2003)》2005,(19):3143-3145
The synthesis and structure of a novel decanuclear copper(II) cage is reported. The assembly of the cage is facilitated by the cumulative coordinative interaction of tert-butyl phosphonate, 2-pyridylpyrazole and hydroxide ligands with copper(II) ions. Magnetic studies of this decanuclear copper(II) cage indicate complex antiferromagnetic behaviour. 相似文献
72.
Octadecyl maleamic acid, a polymerisable surfactant, on coversion to its sodium salt, is shown to exhibit hydrogelation phenomenon. This hydrogelator, consisting of a lamellar structure is further shown to act as an organized reactor for controlled polymerisation reactions in order to generate copolymers with a narrow weight and size distribution. 相似文献
73.
A new structural form of tin in a double O-capped cluster 总被引:1,自引:0,他引:1
A novel hexameric organooxotin cage [{(n-BuSn)3(PhO)3O}2{HPO3}4] 1 has been assembled by the reaction of [n-BuSnO(OH)] with (PhO)2P(O)H. The structure of 1 consists of two O-capped Sn3 clusters that are attached to each other by four bridging tripodal [HPO3]2- ligands. 相似文献
74.
Debasish Pradhan Baskar Shalini Neela Nataraj Amiya K. Pani 《Advances in Computational Mathematics》2011,34(4):339-368
This article deals with the analysis of an iterative non-overlapping domain decomposition (DD) method for elliptic problems,
using Robin-type boundary condition on the inter-subdomain boundaries, which can be solved in parallel with local communications.
The proposed iterative method allows us to relax the continuity condition for Lagrange multipliers on the inter-subdomain
boundaries. In order to derive the corresponding discrete problem, we apply a non-conforming Galerkin method using lowest
order Crouzeix–Raviart elements. The convergence of the iterative scheme is obtained by proving that the spectral radius of
the matrix associated with the fixed point iterations is less than 1. Parallel computations have been carried out and the
numerical experiments confirm the theoretical results established in this paper. 相似文献
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