Persson Ingmar, Nilsson Kersti B
Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden.
Inorg Chem. 2006 Sep 4;45(18):7428-34. doi: 10.1021/ic060636c.
The hydrated and dimethyl sulfoxide and N,N'-dimethylpropyleneurea solvated silver(I) ions have been characterized structurally in solution by means of extended X-ray absorption fine structure (EXAFS) and large-angle X-ray scattering (LAXS). The coordination chemistry of the hydrated and dimethyl sulfoxide solvated silver(I) ions has been reevaluated because of different results from the EXAFS and LAXS methods reported previously. Consistent results are obtained with a linearly distorted tetrahedral model with two short and approximately two long Ag-O bond distances: mean Ag-O bond lengths of 2.32(1) and 2.54(1) A for the hydrate, 2.31(1) and 2.48(2) A for the dimethyl sulfoxide solvate, and 2.31(1) and 2.54(2) A for the N,N'-dimethylpropyleneurea solvate, in solution.
通过扩展X射线吸收精细结构（EXAFS）和大角度X射线散射（LAXS）对水合、二甲基亚砜和N，N'-二甲基亚丙基脲溶剂化的银（I）离子在溶液中的结构进行了表征。由于先前报道的EXAFS和LAXS方法得出了不同的结果，因此对水合和二甲基亚砜溶剂化的银（I）离子的配位化学进行了重新评估。对于具有两个短且近似两个长的Ag-O键距离的线性扭曲四面体模型，获得了一致的结果：水合物的平均Ag-O键长为2.32（1）和2.54（1）Å，二甲基亚砜溶剂化物为2.31（1）和2.48（2）Å，N，N'-二甲基亚丙基脲溶剂化物在溶液中为2.31（1）和2.54（2）Å。
