Re: [ccp4bb] tricoordinated ion?

[Roger Rowlett]

Sebastiano, The density is possibly consistent with a trigonal planar anion such as bicarbonate or nitrate. Bicarbonate can enter the solution from CO2 in the atmosphere. Cheers, -- Roger S. Rowlett Professor Colgate University Presidential Scholar Department of Chemistry Colgate University 13 Oak Drive Hamilton, NY 13346 tel: (315)-228-7245 ofc: (315)-228-7395 fax: (315)-228-7935 email: [EMAIL PROTECTED] Sebastiano Pasqualato wrote: Hi all, I wanted to ask you what would you model in the density in which I have at the moment modelled 4 water molecules, which are however too close to be waters, I guess (see attached image). My crystallisation conditions contain NaCl, MgCl2, Peg400, TrisHCl, TCEP, glycerol. I can't think at a tricoordinated ion like that... thanks in advance for the hints, ciao S -- Sebastiano Pasqualato, PhD IFOM-IEO Campus Dipartimento di Oncologia Sperimentale Istituto Europeo di Oncologia via Adamello, 16 20139 - Milano Italy tel +39 02 9437 5094 fax +39 02 574 303 310