Tanemura, Kiyoshi et al. published new experimental results with the assistance of cas: 2235-01-0

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Reference of Dimethoxydiphenylmethane The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Tanemura, Kiyoshi;Suzuki, Tsuneo published 《Highly efficient acetalization of carbonyl compounds catalyzed by aniline-aldehyde resin salts》 in 2015. The article was appeared in 《Chemistry Letters》. They have made some progress in their research.Reference of Dimethoxydiphenylmethane The article mentions the following:

Mild procedures for the syntheses of ethylene acetals, e.g., I, and di-Me acetals, e.g., II, from the corresponding aldehydes and ketones catalyzed by 1 mol % of aniline-aldehyde resin salts are described. This methodol. is also useful for the synthesis of di-Me acetals of diaryl ketones. The experimental procedure involved many compounds, such as Dimethoxydiphenylmethane (cas: 2235-01-0) .

Dimethoxydiphenylmethane is one of ethers-buliding-blocks. Ethers feature bent C–O–C linkages. In dimethyl ether, the bond angle is 111° and C–O distances are 141 pm. The barrier to rotation about the C–O bonds is low. Reference of Dimethoxydiphenylmethane The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.

Reference:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem