research communications
Open access
The copper(II) ion of the anhydrous form of bis(sarcosinato)copper(II) exhibits a [4 + 2] coordination sphere with four shorter equatorial bonds to the N and carboxylate O atoms of two sarcosinate anions, and two longer axial bonds to O atoms of neighboring complexes, leading to a sheet structure parallel to (001).
organic compounds
Open access
In the title compound, C5H9NO2·H2O, the amino acid is in the usual zwitterionic form involving the α-carboxylate group. The cyclobutane backbone of the amino acid is disordered over two conformations, with occupancies of 0.882 (7) and 0.118 (7). In the crystal, N—HO and O—HO hydrogen bonds link the zwitterions [with the water molecule involved as both acceptor (with the NH3+) and donor (through a single carboxylate O from two different aminocyclobutane carboxylate moities)], resulting in a two-dimensional layered structure lying parallel to (100).