Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 3 (March 2013)


metal-organic compounds



Acta Cryst. (2013). C69, 225-228    [ doi:10.1107/S0108270113000814 ]

A novel amido-pyrophosphate MnII chelate complex with the synthetic ligand O{P(O)[NHC(CH3)3]2}2 (L): [Mn(L)2{OC(H)N(CH3)2}2]Cl2·2H2O

A. Tarahhomi, M. Pourayoubi, K. Fejfarová and M. Dusek

Abstract: The title complex, trans-bis­(dimethyl­formamide-[kappa]O)bis{­N,N'-N'',N'''-tetra-tert-butyl[­oxybis(phosphonic diamide-[kappa]O)]}man­ganese(II) dichloride dihydrate, [Mn(C16H40N4O3P2)2(C3H7NO)2]Cl2·2H2O, is the first example of a bis-chelate amido-pyrophosphate (pyro­phosphor­amide) complex containing an O[P(O)(NH)2]2 fragment. Its asymmetric unit contains half of the complex dication, one chloride anion and one water mol­ecule. The MnII atom, located on an inversion centre, is octa­hedrally coordinated, with a slight elongation towards the mono­dentate dimethyl­formamide ligand. Structural features of the title complex, such as the P=O bond lengths and the planarity of the chelate ring, are compared with those of previously reported complexes with six-membered chelates involving the fragments C(O)NHP(O), (X)NP(O) [X = C(O), C(S), S(O)2 and P(O)] and O[P(O)(N)2]2. This analysis shows that the six-membered chelate rings are less puckered in pyrophosphor­amide complexes containing a P(O)OP(O) skeleton, such as the title compound. The extended structure of the title complex involves a linear aggregate mediated by N-H...O and N-H...Cl hydrogen bonds, in which the chloride anion is an acceptor in two additional O-H...Cl hydrogen bonds.

Formula: [Mn(C16H40N4O3P2)2(C3H7NO)2]Cl2·2H2O


pdfdisplay filedownload file

Portable Document Format (PDF) file
[ doi:10.1107/S0108270113000814/fa3292sup3.pdf ]
Supplementary material


Notes:

To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.

 bibliographic record in  format

  Find reference:   Volume   Page   
  Search:     From   to      Advanced search

Copyright © International Union of Crystallography
IUCr Webmaster