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In the title compound, [Cu(CH3COO)2(C18H16N2O2)]·H2O, the CuII ion is six-coordinated in a typically Jahn–Teller distorted octa­hedral environment defined by two O and two N atoms from the ligand and two O atoms from acetate anions. A linear chain structure propagating in [010] is built up by inter­molecular O—H...O hydrogen bonds involving the uncoordinated water mol­ecules.

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In the title compound, C19H13NO, the fused isoquinoline–pyrrole system is planar (r.m.s. deviation = 0.0249] Å) and makes a dihedral angle of 53.73 (9)° with the phenyl ring. An intra­molecular C—H...O inter­action generates an S(6) ring motif.

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In the title compound, C16H12Cl2O3, the benzene rings form a dihedral angle of 2.0 (3)°. Within the central O=C—CH2C(H)OH—C=O unit, the carbonyl groups are coplanar and lie to opposite sides [O—C...C—O = −170.1 (6)°]. In the crystal, inter­molecular O—H...O hydrogen bonds formed between the hydr­oxy groups lead to a supra­molecular chain along the c axis. In addition, the crystal packing features some very weak C—H...π inter­actions.
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