- 作者: 彭旭明; 蕭傳鐙; 王瑜
- 作者服務機構: Department of Chemistry, National Taiwan University, Taipei, Taiwan, R.O.C.
- 中文摘要: The crystal structure of [Co/sub 2/(.mu.-dmg)/sub 2/(.mu.-dmg H)(dmg H)(P.phi./sub 3/)].bcdot. 1/2 dmg H/sub 2/.bcdot. 1/2 CH/sub 3/OH has been determined by single crystal X-ray diffraction. The title complex crystallizes in triclinic space group P1 with a=10.859(3), b=13.299(3), c=15.247(3)A, .alpha.=98.52(2), .beta.=99.26(2), .gamma.=97.80(2)/sup 0/ and Z=2. The agreement indices are R(F)=0.062 and R/sub w/(F)=0.085 for 5231 observations and 515 variables. Both cobalt atoms have an oxidation state of 3+ and are both six-coordinated; one Co(III) atom is bonded to a phosphorous atom of triphenylphosphine, four nitrogen atoms of two planar ligands, dmg/sup 2-/ and dmg H/sup -/, and one oxygen atom of another dmg/sup 2-/ ligand. The other Co(III) atom is coordinated by four nitrogen atoms of two cis nonplanar ligands, dmg/sup 2-/, dmg H/sup -/, and two oxygen atoms of the other dmg/sup 2-/ and dmg H/sup -/ ligands. There are three N-O bridged ligands namely two dmg/sup 2-/ and one dmg H/sup -/ between two Co(III) atoms. A free molecule of dmg H/sub 2/ and a molecule of CH/sub 3/OH are also found in the crystal lattice. The structure interstingly demonstrates the possible various forms of dmg, not only on their charge but also in different conformations upon coordination.
- 英文摘要: --
- 中文關鍵字: Crystal structure; cobalt complex of dgm ligand.
- 英文關鍵字: Crystal structure; cobalt complex of dgm ligand.