Dear Sergey, according to Abbatista et al. (Materials Chemistry and Physics,
21(1989)521-528 ) and cited there De Leeuw et al. ( Physica C,152(1988)39)
the compound Ba2Y2O5 could not be prepared from BaOand Y2O3 starting
materials. It appears only if BaCO3 or another carbon containing precursor
is used, then the autors expressed doubts about the presence of this oxide
phase. The real formula of this compound should be Ba2Y2O5.2CO2 - an
oxycarbonate.
Best wishes
Daniela Kovacheva
Institute of General and Inorganic Chemistry
Sofia 1113, Bulgaria
-----Original Message-----
From: Sergey Ushakov <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: ����������, ��� 18, 2001 07:41
Subject: Ba2Y2O5 structure?
>Dear All,
>
>Have somebody seen the structure data on Ba2Y2O5? There is nothing
>in ICSD, There is a pattern in PDF2 without a space group...
>
>Thanks in advance,
>Sergey
>
>----------------------------------
>Sergey Ushakov
>
>post-doc
>University of California at Davis
>Thermochemistry Facility
>Dept. of Chem. Engr. & Mat.Sci.
>One Shields Ave., Davis, CA 95616
>ph 530/754-5863
>fax 530/752-9307
>
>
